Symbols for elements of pipeline systems of buildings and structures. Symbols for elements of pipeline systems of buildings and structures Symbols for elements of pipeline systems of buildings and structures
INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION
INTERSTATE COUNCIL FOR STANDARDIZATION. METROLOGY AND CERTIFICATION
INTERSTATE
STANDARD
(EN 12792:2003, NEQ)
Official publication
Moscow Standartimform 201 v
Preface
The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-2015 “Interstate standardization system. Basic provisions" and GOST 1.2-2015 "Interstate standardization system. Interstate standards. rules and recommendations for interstate standardization. Rules for development and adoption. updates and cancellations"
Standard information
1 DEVELOPED by the Joint Stock Company "Center for Technical and Estimated Standardization in Construction" (JSC "CNS")
2 INTRODUCED by the Technical Committee for Standardization TC 465 “Construction”
3 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (protocol dated August 31, 2016 No. 90-P)
4 By Order of the Federal Agency for Technical Regulation and Metrology dated November 2, 2016 No. 1567-st, the interstate standard GOST 21.205-2016 was put into effect for use as a national standard of the Russian Federation from April 1, 2017.
5 This standard is in accordance with the European standard and the US national standard:
EN 12792:2003 “Ventilation in buildings. Terms and graphical symbols" (“Ventilation for buildings. Symbols, terminology and graphical symbols”. NEQ) regarding the symbols of elements of ventilation and air conditioning systems used in the diagrams:
ANSI/ISA-5.1-2009 “Instrumentation Symbols and Identification” (“Instrumentation Symbols and Identification.” NEQ) regarding valve symbols for the type of actuator and valve control
Information about changes to this standard is published in the annual information index “National Standards”, and the text of changes and amendments is published in the monthly information index “National Standards”. In case of revision (replacement) or cancellation of this standard, the corresponding notice will be published in the monthly information index “National Standards”. standards." Relevant information, notices and texts are also posted in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet (www.gost.ru)
© Standardinform. 2016
In the Russian Federation, this standard cannot be reproduced in whole or in part. replicated and distributed as an official publication without permission from the Federal Agency for Technical Regulation and Metrology
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Continuation of table 6 | |
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Name |
Symbol |
|
5 Check valve a) through | |
|
b) corner Note - The movement of the working fluid through the valve must be directed from the white triangle to the black one | |
|
6 Safety valve: a) passing b) corner |
С^З- or -£^|- |
|
7 Throttle valve | |
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8 Pressure reducing valve Note - The apex of the triangle should be directed towards the increased pressure | |
|
9 Thermostatic valve: a) passing b) mixing | |
|
10 Gate valve (general designation) | |
|
11 Hose valve | |
|
12 Disk valve | |
|
13 Plug valve a) through | |
|
b) corner | |
|
14 Three-way plug valve |
|
Name |
Symbol |
|
15 Four-way valve | |
|
16 Ball valve | |
|
17 Three-way ball valve | |
|
18 Automatic air vent | |
|
19 Manual radiator air vent |
ХН> or -Х> |
|
20 Water tap | |
|
21 Urinal tap | |
|
22 Fire cock (valve) | |
|
23 Watering tap | |
|
24 Double adjustment valve | |
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25 Mixer | |
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a) general designation | |
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b) with swivel spout | |
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c) with shower net | |
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d) for bidet | |
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26 Water meter (water meter) | |
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27 Flow meter, general designation |
3.11 Additional symbols of valves by type of drive and control are given in Table 7.
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Table 7 |
3.12 Additional symbols of fittings by type of action in the event of a power outage are given in Table 8
3.13 Symbols of graphic designations for elements of heating systems are given in Table 9
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Table 9 |
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* In the designation on views, sections and in diagrams, the actual number of pipes is indicated graphically ** Conventional graphic designation is used only in diagrams |
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3.14 Symbols of graphic symbols for elements of ventilation and air conditioning systems used in the diagrams are given in Tables 10-13. The symbols given in tables 10-12 basically correspond to.
|
Name |
Symbol |
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3 Rigid air duct with acoustic insulation a) external b) internal | |||
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4 Flexible air duct | |||
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5 Elbow (bend) 90’. 45'. 135°, etc. | |||
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6 Branch, flow division | |||
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7 The transition is sharp | |||
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8 Transition smooth | |||
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9 Damper (valve) | |||
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10 Sealed damper | |||
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11 Flow switch | |||
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12 Check valve | |||
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13 Pressure relief valve | |||
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14 Smoke valve | |||
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15 Fire damper | |||
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16 Fire and smoke exhaust valve | |||
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1 area of use............................................... ..................1 3 Symbols of system elements...................................................1 4 Alphanumeric designations of pipelines...............................................15 INTERSTATE STANDARD System of design documents for construction SYMBOLS OF ELEMENTS OF PIPELINE SYSTEMS OF BUILDINGS AND STRUCTURES System of design documents for construction Symbols of elements of pipeline systems of buildings and structures Date of introduction - 2017-414-01 1 area of useThis standard establishes the basic conventional graphic designations of elements of engineering support systems (water supply, sewerage, heating, ventilation, air conditioning, gas supply), thermomechanical and other pipeline systems, as well as alphanumeric designations of pipelines of these systems in drawings and diagrams when designing buildings and structures for various purposes. 2 Normative referencesThis standard uses normative references to the following interstate standards: 3.2 Dimensions of conventional graphic symbols of system elements in drawings and diagrams are taken without respect to scale. Graphic symbols do not show the actual design of the elements. 3.3 In diagrams made in axonometric projection, system elements may be depicted in a simplified form in the form of contour outlines. Official publication 3.4 Symbols of devices, automation equipment and communication lines, as well as letter designations of measured quantities and functional characteristics of devices in diagrams are accepted in accordance with GOST 21 208. 3.5 Conventional graphic symbols of general purpose pipeline elements used in the diagrams are given in Table 1.
3.6 Symbols of tanks and pumps in the diagrams are given in Table 2 Table 2
3.7 Symbols of graphic designations of elements of internal water supply and sewerage systems are given in Table 3
3.10 Symbols of the main pipeline fittings (devices) are given in Table 6 |
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Put into effect by order of the Federal Agency for Technical Regulation and Metrology dated November 2, 2016 N 1567-st
Interstate standard GOST 21.205-2016
"SYSTEM OF DESIGN DOCUMENTATION FOR CONSTRUCTION. SYMBOLS OF ELEMENTS OF PIPELINE SYSTEMS OF BUILDINGS AND STRUCTURES"
System of design documents for construction. Symbols of elements of pipeline systems of buildings and structures
Introduced to replace GOST 21.205-93
Preface
The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-2015 "Interstate standardization system. Basic provisions" and GOST 1.2-2015 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. Rules for development, adoption, updates and cancellations"
Standard information
1 was developed by the Joint Stock Company "Center for Technical and Estimated Standardization in Construction" (JSC "CNS")
2 introduced by the Technical Committee for Standardization TC 465 "Construction"
3 Adopted by the Interstate Council for Standardization, Metrology and Certification (protocol dated August 31, 2016 N 90-P)
4 By Order of the Federal Agency for Technical Regulation and Metrology dated November 2, 2016 N 1567-st, the interstate standard GOST 21.205-2016 was put into effect for use as a national standard of the Russian Federation from April 1, 2017.
5 This standard is in accordance with the European standard and the US national standard:
EN 12792:2003 "Ventilation for buildings. Symbols, terminology and graphical symbols", NEQ) regarding the symbols of elements of ventilation and air-conditioning systems used in diagrams;
ANSI/ISA-5.1-2009 "Instrumentation Symbols and Identification" (NEQ) regarding valve symbols for the type of actuator and valve control
6 Introduced to replace GOST 21.205-93
1 area of use
This standard establishes the basic conventional graphic designations of elements of engineering support systems (water supply, sewerage, heating, ventilation, air conditioning, gas supply), thermomechanical and other pipeline systems, as well as alphanumeric designations of pipelines of these systems in drawings and diagrams when designing buildings and structures for various purposes.
This standard uses normative references to the following interstate standards:
GOST 2.782-96 Unified system of design documentation. Symbols are conventional graphic. Hydraulic and pneumatic machines
GOST 21.206-2012 System of design documentation for construction. Pipeline symbols
GOST 21.208-2013 System of design documentation for construction. Automation of technological processes. Symbols of devices and automation equipment in diagrams
Note - When using this standard, it is advisable to check the validity of the reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or using the annual information index "National Standards", which was published as of January 1 of the current year, and according to the corresponding monthly information indexes published in the current year. If the reference standard is replaced (changed), then when using this standard you should be guided by the replacing (changed) standard. If the reference standard is canceled without replacement, then the provision in which a reference is made to it is applied in the part that does not affect this reference.
3 Conventional graphic symbols of system elements
3.1 Pipelines and their elements in drawings and diagrams are indicated by conventional graphic symbols and simplified images in accordance with GOST 21.206.
3.2 Dimensions of conventional graphic symbols of system elements in drawings and diagrams are taken without respect to scale.
Graphic symbols do not show the actual design of the elements.
3.3 In diagrams made in axonometric projection, system elements may be depicted in a simplified form in the form of contour outlines.
3.4 Symbols of devices, automation equipment and communication lines, as well as letter designations of measured quantities and functional characteristics of devices in diagrams are accepted in accordance with GOST 21.208.
3.5 Conventional graphic symbols of general purpose pipeline elements used in the diagrams are given in Table 1.
Table 1
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Name |
Symbol |
|
2 Heater |  |
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3 Cooler |  |
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4 Cooler and heater (thermostat) |  |
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5 Heat recovery unit |  |
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6 Air dryer |  |
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7 Humidifier |  |
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8 Steam trap (steam trap) |  |
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9 Selected device* for installing the control and measuring device |  |
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* Designation shown on the pipeline. |
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Note - The symbols given in paragraphs 1 - 8 of Table 1 are not used in diagrams of ventilation and air conditioning systems. |
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3.6 Symbols of tanks and pumps in the diagrams are given in Table 2.
table 2
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Name |
Symbol |
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a) open under atmospheric pressure |  |
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b) closed with pressure above atmospheric |  |
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c) closed with pressure below atmospheric |  |
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2 Nozzle |  | ||
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3 Pump (general designation) a) unregulated |  | ||
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b) adjustable Note - If it is necessary to reflect the principle of operation of the pump, then the designations given in paragraphs 4 - 6 or in GOST 2.782 (Table 2) are used. |  | ||
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4 Hand pump |  | ||
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5 Centrifugal pump |  | ||
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6 Jet pump (ejector, injector, elevator) |  | ||
3.7 Symbols of graphic designations of elements of internal water supply and sewerage systems are given in Table 3.
Table 3
|
Symbol | |||||
|
Name |
in top views and plans | ||||
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1 Sink |  |  | |||
 |  | ||||
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3 Washbasin |  |  | |||
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4 Corner washbasin |  |  | |||
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5 Group washbasin Note - The number of "+" signs in the designation must correspond to the actual number of taps. |  |  | |||
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6 Group round washbasin |  |  | |||
 |  | ||||
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8 Foot bath |  |  | |||
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9 Shower tray |  |  | |||
 |  | ||||
 |  | ||||
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12 Floor bowl |  |  | |||
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13 Wall urinal |  |  | |||
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14 Floor urinal |  |  | |||
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15 Sick leave drain |  |  | |||
 |  | ||||
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17 Drain funnel |  | ||||
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18 Internal drain funnel |  |  | |||
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19 Shower mesh |  |  | |||
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20 Drinking fountain |  |  | |||
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21 Soda fountain |  |  | |||
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22 Electric instantaneous water heater |  |  |
|||
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23 Electric storage water heater |  |  |
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3.8 Graphic symbols of pipelines and their elements are given in Table 4.
Table 4
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Name |
Symbol | |
|
1 Isolated pipeline section |  | |
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2 Pipeline in a pipe (case) |  | |
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3 Pipeline in the gland |  | |
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4 Siphon (hydraulic seal)* |  | |
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5 Compensator:* | ||
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a) general designation |  | |
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b) U-shaped |  | |
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c) Z-shaped |  | |
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d) bellows |  | |
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e) stuffing box (telescopic) |  | |
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6 Insert:* | ||
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a) depreciation |  | |
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b) soundproofing |  | |
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c) electrically insulating |  | |
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7 Place of resistance in the pipeline (throttle washer, flow meter orifice, diaphragm) |  | |
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8 Pipeline support (suspension): a) motionless b) movable | ||
 |
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 |
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9 Pipeline suspension: a) motionless b) guide | ||
 |
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 |
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10 Compensation pipe |  |
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11 Revision |  |
|
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* Designations of elements may be depicted in accordance with their actual configuration. |
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3.9 Symbolic graphic symbols for the direction of flow of liquid, gas, regulation, and drive elements used in the diagrams are given in Table 5.
Table 5
|
Name |
Symbol | |||
 | ||||
 | ||||
|
3 Regulation Note - The direction of the arrow is taken according to GOST 21.208 (Table 1). |  | |||
|
4 Actuator (drive): | ||||
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a) general designation |  | |||
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b) manual |  | |||
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c) electromagnetic |  | |||
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d) electric machine |  | |||
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e) single-acting membrane |  | |||
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f) single-acting membrane with positioner |  | |||
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g) drive with lateral manual override |  | |||
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i) double-acting membrane |  | |||
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j) bellows |  | |||
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l) float |  | |||
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m) spring or lever-weight regulating safety valve device |  | |||
3.10 Symbols of the main pipeline fittings (devices) are given in Table 6.
Table 6
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Name |
Symbol | |
|
1 Stop valve: a) passing b) corner | ||
 | ||
 | ||
|
2 Three-way valve |  | |
|
3 Diaphragm valve (diaphragm) |  | |
|
4 Control valve: | ||
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a) passing |  | |
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b) corner |  | |
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c) triple |  | |
|
5 Check valve: a) passing b) corner Note - The movement of the working medium through the valve must be directed from the white triangle to the black one. | ||
 | ||
 | ||
|
6 Safety valve: a) passing b) corner |  | |
 | ||
|
7 Throttle valve |  | |
|
8 Pressure reducing valve Note - The apex of the triangle should be directed towards the increased pressure. |  | |
|
9 Thermostatic valve: a) passing b) mixing |  | |
 | ||
|
10 Gate valve (general designation) |  | |
|
11 Hose valve |  | |
|
12 Disk valve |  | |
|
13 Plug valve: a) passing b) corner |  | |
 | ||
|
14 Three-way plug valve |  | |
|
15 Four-way valve |  | |
|
16 Ball valve |  | |
|
17 Three-way ball valve |  | |
|
18 Automatic air vent |  | |
|
19 Manual radiator air vent | ||
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20 Water tap |  | |
|
21 Urinal tap |  | |
|
22 Fire cock (valve) |  | |
|
23 Watering tap |  | |
|
24 Double adjustment valve |  | |
|
25 Mixer: a) general designation b) with swivel spout c) with shower net d) for bidet | ||
 | ||
 | ||
 | ||
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26 Water meter (water meter) |  | |
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27 Flow meter, general designation |  |
3.11 Additional symbols of valves by type of drive and control are given in Table 7.
Table 7
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Description |
Symbol |
|
1 Pressure regulator "towards you". External pressure tap |  |
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2 Pressure regulator "towards you". Internal pressure tap |  |
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3 Pressure regulator "after itself". External pressure tap |  |
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4 Pressure regulator "after itself". Internal pressure tap |  |
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5 Differential pressure regulator (differential). External pressure taps |  |
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6 Differential pressure regulator (differential). Internal pressure taps |  |
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7 Level control |  |
3.12 Additional symbols of fittings by type of action in the event of a power outage are given in Table 8.
Table 8
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Description |
Symbol |
|
1 Normally open valve (NO valve) |  |
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2 Normally closed valves (NC valves) |  |
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3 Valves with a drive or actuator, which, in the absence or interruption of the supply of energy creating the adjustment force, locks the locking or regulating element in its last position |  |
3.13 Symbols of graphic designations for elements of heating systems are given in Table 9.
Table 9
|
Name |
Symbol |
|
|
in top views and plans |
in front or side views, in sections and in diagrams |
|
|
1 Smooth heating pipe, register made of smooth pipes* |  |  |
|
2 Finned heating pipe, register made of finned pipes, heating convector* |  |  |
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3 Heating convector, built into the floor |  |  |
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4 Heating radiator |  |  |
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5 Ceiling heating device for radiant heating |  |  |
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6 Air heating unit** |  |
|
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7 Electric heating device** |  |
|
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* In the designation on views, sections and diagrams, the actual number of pipes is indicated graphically. ** Conventional graphic designation is used only in diagrams. |
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3.14 Symbols of graphic symbols for elements of ventilation and air conditioning systems used in the diagrams are given in tables 10 - 13. Symbols given in tables 10 - 12 basically correspond.
Table 10 - Symbols of air distribution devices
Table 11 - Symbols of air ducts and their elements
|
Name |
Symbol | ||
|
1 Hard air duct: a) oval b) round c) rectangular |  | ||
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2 Rigid air duct with thermal insulation a) external b) internal |  | ||
|
3 Rigid air duct with acoustic insulation: a) external b) internal |  |
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|
4 Flexible air duct |  |
||
|
5 Elbow (bend) 90°, 45°, 135°, etc. |  |
||
|
6 Branch, flow division |  |
||
|
7 The transition is sharp |  |
||
|
8 Transition smooth |  |
||
|
9 Damper (valve) |  |
||
|
10 Sealed damper |  |
||
|
11 Flow switch |  |
||
|
12 Check valve |  |
||
|
13 Pressure relief valve |  |
||
|
14 Smoke valve |  |
||
|
15 Fire damper |  |
||
|
16 Fire and smoke exhaust valve |  |
||
|
17 Constant flow control valve |  |
||
|
18 Variable flow control valve |  |
||
 |
|||
|
20 Fan (general designation) |  |
||
|
21 Radial fan |  |
||
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22 Axial fan |  |
||
|
23 Air filter |  |
||
|
24 Multi-leaf louver valve |  |
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25 Grille (blinds) |  |
||
|
26 Flow straightener |  |
||
|
27 Silencer |  |
||
|
28 Gate valve (gate) |  |
||
|
29 Hatch for measuring air parameters and/or cleaning air ducts |  |
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30 Deflector |  |
||
 |
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Table 12 - Symbols of devices for air purification (preparation)
|
Name |
Symbol |
|
1 Air mixer with constant flow (flow) |  |
|
2 Air mixer with adjustable flow (flow) |  |
|
3 Air heater |  |
|
4 Air cooler |  |
|
5 Humidifier |  |
|
6 Mixing chamber |  |
|
7 Fan coil |  |
|
8 Ejection closer |  |
Table 13 - Simplified images of air ducts and channels
|
Name |
Simplified image |
|
|
on plans and views |
in cross section |
|
|
1 Air duct (with a simplified graphical representation of two lines): a) round cross-section. Note - For round air ducts with a diameter of up to 500 mm inclusive, it is allowed not to indicate the center line on the system drawings; b) rectangular section | ||
 |  |
|
 |  |
|
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2 Channel underground |  | |
4 Alphanumeric designations of pipelines
4.1 The alphanumeric designation of a pipeline consists of a capital letter characterizing the type of engineering system (network) and numbers characterizing the purpose of the pipeline and/or its parameters.
Alphanumeric designations of pipelines on drawings and diagrams are applied in accordance with GOST 21.206.
The letter designations of internal engineering systems of buildings and structures and external utility networks included in the alphanumeric designations of pipelines of these systems and networks are taken according to Table 14.
Table 14
|
Name |
Letter designation |
|
1 Internal systems and external water supply networks | |
|
2 Internal systems and external sewerage (sewage) networks | |
|
3 Internal heat supply and hot water supply systems, heating networks | |
|
4 Refrigeration systems | |
|
5 Air supply systems, vacuum networks | |
|
6 Gas distribution and gas consumption networks | |
|
* If necessary, the Latin letter “G” may be used in the alphanumeric designation of gas pipelines. |
|
4.2 Alphanumeric designations of pipelines of external networks and internal water supply systems are given in Table 15.
Table 15
|
Name |
Alphanumeric designation |
|
1 Domestic and drinking water supply | |
|
2 Fire water supply | |
|
3 Industrial water supply | |
|
General designation | |
|
Recycled water supply | |
|
Recycled water, reverse | |
|
Softened water | |
|
Water from surface sources (river, lake, etc.) | |
|
Clarified water from surface sources | |
|
underground water | |
|
sea water | |
|
Notes 1 For pipelines of water supply systems with different parameters and properties of water, the following designations are adopted: From B11 to B19 for pipelines specified in paragraph 1; From B21 to B29 for pipelines specified in paragraph 2; From B31 to B39 for the pipelines specified in paragraph 3. For pipelines of water supply systems not provided for in Table 15, designations from B41 to B99 are accepted. 2 In the case where a domestic drinking or industrial water supply system is also fire-fighting, it is given the designation of a domestic drinking or industrial water supply system, and the purpose is explained in drawings or diagrams. |
|
4.3 Alphanumeric designations of pipelines of external networks and internal sewerage systems are given in Table 16.
Table 16
|
Name |
Alphanumeric designation |
|
1 Domestic sewerage | |
|
2 Rainwater drainage | |
|
3 Industrial sewerage: | |
|
General designation | |
|
Mechanically polluted waters | |
|
Chemically polluted waters | |
|
Acidic waters | |
|
Alkaline waters | |
|
Acid-alkaline waters | |
|
Notes 1 For sewerage (wastewater) systems with different parameters and properties of water, the following designations are accepted: From K11 to K19 for pipelines of sewerage systems specified in paragraph 2; From K21 to K29 for pipelines of sewerage systems specified in paragraph 3; For pipelines of sewerage systems not provided for in Table 16, designations from K41 to K99 are accepted. 2 If it is necessary to show that a section of the sewerage network is pressure, then the alphanumeric designation is supplemented with the capital letter “N”, for example K31N. |
|
4.4 Alphanumeric designations of heat pipes (pipes for hot water, steam and other coolants) are given in Table 17.
Table 17
|
Name |
Alphanumeric designation |
|
|
1 Hot water pipeline for heating and ventilation (including air conditioning), as well as general for heating, ventilation, hot water supply and technological processes: | ||
|
Serving Back | ||
|
2 Hot water pipe for hot water supply: Serving Circulating 3 Hot water pipeline for technological processes: | ||
|
Serving Back | ||
|
4 Steam pipeline (steam pipeline) | ||
|
5 Condensate pipeline (condensate pipeline) | ||
|
Notes 1 For heat pipes with different parameters of the coolant, the following designations are used: From T11 to T19 and from T21 to T29 for pipelines specified in paragraph 1; From T31 to T39 and from T41 to T49 for pipelines specified in paragraph 2; From T51 to T59 and from T61 to T69 for pipelines specified in paragraph 3; From T71 to T79 for pipelines specified in paragraph 4; From T81 to T89 for pipelines specified in paragraph 5. 2 For heat pipes not provided for in Table 17, designations from T91 to T99 are accepted, regardless of the type of transported medium and its parameters. 3 If it is necessary to show that a section of the condensate pipeline is pressure, then the alphanumeric designation is supplemented with the capital letter “N”, for example T8N. |
||
4.5 Alphanumeric designations of refrigeration pipelines in air conditioning systems are given in Table 18.
Table 18
|
Name |
Alphanumeric designation |
|
1 Coolant supply pipeline | |
|
2 Coolant return pipeline | |
|
3 Liquid pipe | |
|
4 Refrigerant gas piping (hot gas) | |
|
5 Refrigerant gas piping (cold gas) | |
|
Note - For pipelines not provided for in Table 18, designations with sequential numbering should be adopted in continuation of those indicated in this table. |
|
4.6 Alphanumeric designations of air ducts are given in Table 19.
Table 19
4.7 Alphanumeric designations of gas pipelines (natural gas and liquefied hydrocarbon gases) are given in Table 20.
Table 20
|
Name |
Alphanumeric designation |
|
1 Gas pipeline: Low pressure up to 0.1 MPa | |
|
Medium pressure St. 0.1 to 0.3 MPa incl. | |
|
High pressure St. 0.3 to 0.6 MPa incl. | |
|
High pressure St. 0.6 MPa | |
|
2 Purge gas pipeline | |
|
3 Vacuum pipeline | |
|
4 Gas pipeline (pipeline) safety | |
|
Note - For gas pipelines not provided for in Table 20, designations with sequential numbering should be adopted in continuation of those indicated in this table. |
|
4.8 If there are several pipelines of the same name (of the same type) in the drawings, each of which needs to be highlighted, they are assigned designations consisting of the alphanumeric designation given in Tables 2 - 7, with the addition of the serial number of the pipeline, separated by a dot.
Example - B31.1; B31.2
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Sanitary and epidemiological rules and regulations (abbreviated as SanPiN) mean measures aimed at protecting people and their environment from infections, harmful substances, contamination, as well as monitoring the activities of various enterprises and the compliance of their products with guaranteed high quality.
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INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION
INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION
INTERSTATE
STANDARD
SYMBOLS OF ELEMENTS OF PIPELINE SYSTEMS OF BUILDINGS AND STRUCTURES
(EN 12792:2003, NEQ)
Official publication
SSH1LTTM|fP[M
GOST 21.205-2016
Preface
The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-2015 “Interstate standardization system. Basic provisions" and GOST 1.2-2015 "Interstate standardization system. Interstate standards. rules and recommendations for interstate standardization. Rules for development, acceptance, updating and cancellation"
Standard information
1 DEVELOPED by the Joint Stock Company "Center for Technical and Estimated Standardization in Construction" (JSC "CNS")
2 INTRODUCED by the Technical Committee for Standardization TC 465 “Construction”
3 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (protocol dated August 31, 2016 No. 90-P)
4 By Order of the Federal Agency for Technical Regulation and Metrology dated November 2, 2016 Ns 1567-st, the interstate standard GOST 21.205-2016 was put into effect for use as a national standard of the Russian Federation from April 1, 2017.
5 This standard is in accordance with the European standard and the US national standard:
EN 12792:2003 “Ventilation in buildings. Terms and graphical symbols" (“Ventilation for buildings. Symbols, terminology and graphical symbols”. NEQ) e parts of the symbols of elements of ventilation and air conditioning systems used in the diagrams:
ANSI/ISA-5.1-2009 “Instrumentation Symbols and Identification” (“Instrumentation Symbols and Identification.” NEO) regarding valve symbols for the type of actuator and valve control
6 INTRODUCED TO REPLACE GOST 21.205-93
Information about changes to this standard is published in the annual information index “National Standards”, and the text of changes and amendments is published in the monthly information index “National Standards”. In case of revision (replacement) or cancellation of this standard, the corresponding notice will be published in the monthly information index “National Standards”. Relevant information, notices and texts are also posted in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet ()
© Stamdartinform. 2016
In the Russian Federation, this standard cannot be reproduced in whole or in part. replicated and distributed as an official publication without permission from the Federal Agency for Technical Regulation and Metrology
GOST 21.205-2016
1 area of use............................................... ..................1
3 Symbols of system elements...................................................1
4 Alphanumeric designations of pipelines...............................................15
GOST 21.205-2016
INTERSTATE STANDARD
System of design documents for construction
SYMBOLS OF ELEMENTS OF PIPELINE SYSTEMS
BUILDINGS AND STRUCTURES
System of design documents for construction.
Symbots of elements of pipeline systems of buildings and structures
Date of introduction - 2017-04-01
1 area of use
This standard establishes the basic conventional graphic designations of elements of engineering support systems (water supply, sewerage, heating, ventilation, air conditioning, gas supply), thermomechanical and other pipeline systems, as well as alphanumeric designations of pipelines of these systems in drawings and diagrams when designing buildings and structures for various purposes.
8 of this standard uses regulatory references to the following interstate standards:
GOST 2.782-96 Unified system of design documentation. Symbols are conventional graphic. Hydraulic and pneumatic machines
GOST 21.206-2012 System of design documentation for construction. Pipeline symbols
GOST 21.208-2013 System of design documentation for construction. Automation of technological processes. Symbols of devices and automation equipment in diagrams
Note - When using this standard, it is advisable to check the validity of the reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or using the annual information index “National Standards”, which was published as of January 1 of the current year, and according to the corresponding monthly information indexes published in the current year. If the reference standard is replaced (changed), then when using this standard you should be guided by the replacing (changed) standard. If the reference standard is canceled without replacement, then the provision in which a reference is made to it is applied in the part that does not affect this reference.
3 Conventional graphic symbols of system elements
3.1 Pipelines and their elements in drawings and diagrams are indicated by conventional graphic symbols and simplified images in accordance with GOST 21.206.
3.2 Dimensions of conventional graphic symbols of system elements in drawings and diagrams are taken without respect to scale.
Graphic symbols do not show the actual design of the elements.
3.3 8 diagrams performed in axonometric projection, system elements can be depicted in a simplified form in the form of contour outlines.
Official publication
GOST 21.205-2016
3.4 Symbols of devices, automation equipment and communication lines, as well as letter designations of measured quantities and functional characteristics of devices in diagrams are accepted in accordance with GOST 21.208.
3.5 Conventional graphic symbols of general purpose pipeline elements used in the diagrams are given in Table 1.
Table 1
|
Name |
Symbol |
|
2 Heater | |
|
3 Cooler | |
|
4 Cooler and heater (thermostat) | |
|
5 Heat exchanger | |
|
6 Air dryer | |
|
7 Humidifier | |
|
8 Condensate drain (condensation trap) | |
|
9 “Selective device” for installing an instrument | |
|
* Designation shown on the pipeline. Note - The symbols given in paragraphs 1-8 of Table 1 are not used in the diagrams of ventilation and air conditioning systems. |
|
3.6 Symbols of tanks and pumps in the diagrams are given in Table 2.
table 2
GOST 21.205-2016
End of table 2
3.7 Symbols of graphic symbols for elements of internal water supply and sewerage systems are given in Table 3.
Table 3
GOST 21.205-2016
Continuation of table 3
|
Name |
Conventionally" designation |
|
|
in top views and non-plans |
in front and side views. in sections and diagrams |
|
|
8 Foot bath | ||
|
9 Shower tray | ||
|
12 Floor bowl | ||
|
13 Oiccyap wall | ||
|
14 Floor urinal | ||
|
15 Sick leave drain | ||
|
17 Drain funnel | ||
|
1B Internal drain funnel | ||
|
19 Shower mesh | ||
|
20 Drinking fountain | ||
|
21 Soda fountain | ||
GOST 21.205-2016
End of table 3
3.8 Graphic symbols of pipelines and their elements are given in Table 4.
Table 4
|
Name |
Symbol |
|
1 Isolated pipeline section | |
|
2 Pipeline in a pipe (case) | |
|
3 Pipeline in the gland | |
|
4 Siphon (hydraulic seal)* | |
|
5 Compensator*: | |
|
a) general designation | |
|
b) U-shaped | |
|
c) Z-shaped | |
|
d) bellows | |
|
e) stuffing box (telescopic) | |
|
6 Insert: | |
|
a) depreciation | |
|
b) soundproofing | |
|
c) electrically insulating | |
|
7 Place of resistance in the pipeline (throttle washer, flow meter orifice, diaphragm) |
GOST 21.205-2016
End of table 4
3.9 Symbolic graphic symbols for the direction of liquid flow, gas flow, regulation, and drive elements* used in the diagrams are given in Table 5.
Table 5
GOST 21.205-2016
End of table 5
3.10 Symbols of the main pipeline fittings (devices) are given in Table 6.
Table b
GOST 21.205-2016
|
Continuation of table 6 | |
|
Naiiiiiiovatge |
Symbol |
|
5 Check valve: a) through | |
|
6) corner Note - The movement of the working medium through the valve must be directed from the white triangle to the black one. | |
|
6 Safety valve: a) passing b) corner | |
|
7 Throttle valve | |
|
8 Pressure reducing valve Note - The apex of the triangle should be directed towards the increased pressure. | |
|
9 Thermal control valve: a) passing b) mixing | |
|
10 Gate valve (general designation) | |
|
11 Hose valve | |
|
12 Disk valve | |
|
13 Plug valve: a) straight through | |
|
b) corner | |
|
14 Three-way plug valve |
GOST 21.205-2016
End of table 6
|
Name |
Symbol |
|
15 Four-way valve | |
|
16 Ball valve | |
|
17 Three-way ball valve | |
|
18 Automatic air vent | |
|
19 Manual radiator air vent |
Hk>nh> |
|
20 Water tap | |
|
21 Lissuer crane | |
|
22 Fire cock (valve) | |
|
23 Watering tap | |
|
24 Double adjustment valve | |
|
25 Mixer: | |
|
a) general designation | |
|
b) with rotary filling | |
|
c) with shower net |
|
|
d) for bidet | |
|
26 Water meter (water meter) | |
|
27 Flow meter, general designation |
GOST 21.205-2016
3.11 Additional symbols of valves by type of drive and control are given in Table 7.
Table 7
3.12 Additional symbols of fittings by type of action when the power supply is interrupted are given in Table 8.
Table in
GOST 21.205-2016
3.13 Symbols of graphic designations for elements of heating systems are given in Table 9.
Table 9
* In the designation on views, sections and diagrams, the actual number of pipes is indicated graphically. "The conventional graphic designation is used only in diagrams.
3.14 Symbols of graphic symbols for elements of ventilation and air conditioning systems used in the diagrams are given in Tables 10-13. Symbols given in tables 10-12. basically correspond to (1].
Table 10 - Symbols of air distribution devices
Table 11 - Symbols of air ducts and their elements
GOST 21.205-2016
Continuation of table 11
|
Name |
Symbol |
|
3 Sheet air duct with acoustic insulation: a) external b) internal |
LPLSHSHLLLLLD |
|
4 Flexible air duct | |
|
5 Elbow (bend) 90*. 45". 135*, etc. | |
|
6 Branch, flow division | |
|
7 The transition is sharp | |
|
8 Transition smooth | |
|
9 Damper (valve) | |
|
10 Sealed damper | |
|
11 Flow switch | |
|
12 Check valve | |
|
13 Pressure relief valve | |
|
14 Smoke valve | |
|
15 Fire damper | |
|
16 Fire and smoke exhaust valve |
GOST 21.205-2016
End of table 11
|
Name |
Symbol |
|
17 Constant flow control valve | |
|
18 Variable flow control valve | |
|
20 Fan (general designation) | |
|
21 Radial fan | |
|
22 Axial fan | |
|
23 Air filter | |
|
24 Multi-acting louver valve | |
|
25 Grille (blinds) | |
|
26 Flow straightener | |
|
27 Silencer | |
|
28 Gate valve (gate) | |
|
29 Hatch for measuring air parameters and "or cleaning air ducts | |
|
30 Deflector | |
GOST 21.205-2016
Table 12 - Symbols of devices for air purification (preparation)
Table 13 - Simplified images of air ducts and channels
GOST 21.205-2016
4 Alphanumeric designations of pipelines
4.1 The alphanumeric designation of a pipeline consists of a capital letter characterizing the type of engineering system (network) and numbers characterizing the purpose of the pipeline and/or its parameters.
Alphanumeric designations of pipelines on drawings and diagrams are applied in accordance with GOST 21.206.
The letter designations of internal engineering systems of buildings and structures and external utility networks included in the alphanumeric designations of pipelines of these systems and networks are taken according to Table 14.
Table 14
4.2 Alphanumeric designations of pipelines of external networks and internal water supply systems are given in Table 15.
Table 15
|
Name |
Bukeeino-ifeooee designation |
|
1 Domestic and drinking water supply | |
|
2 Fire water supply | |
|
3 Industrial water supply: | |
|
General designation | |
|
Recycled water supply | |
|
Recycled water, reverse | |
|
Softened water | |
|
Water from surface sources (river, lake, etc.) | |
|
Clarified water from surface sources" | |
|
underground water | |
|
sea water |
Notes
1 For pipelines of water supply systems with different parameters and properties of water, the following designations are adopted:
From В11 to В19 for pipelines specified in paragraph 1;
From B21 to B29 for pipelines specified in paragraph 2;
From B31 to B39 for the pipelines specified in paragraph 3.
For pipelines of water supply systems not provided for in Table 15, designations from B41 to B99 are accepted.
2 In the case where the drinking water supply or industrial water supply is also fire-fighting, it is given the designation of the drinking water supply or industrial water supply system. and the purpose is explained in drawings or diagrams.
GOST 21.205-2016
4.3 Alphanumeric designations of pipelines of external networks and internal sewerage systems are given in Table 16.
Table 16
|
Name |
Alphanumeric designation |
|
1 Domestic sewerage | |
|
2 Rainwater drainage | |
|
3 Industrial sewerage: | |
|
General designation | |
|
Mechanically polluted waters | |
|
Chemically polluted waters | |
|
Acidic waters | |
|
Alkaline Vedas | |
|
Acid-alkaline waters | |
|
Notes 1 For sewerage (wastewater) systems with different parameters and properties of water, the following designations are accepted: From K11 to K19 for pipelines of sewerage systems specified in paragraph 2: From K21 to K29 for pipelines of sewerage systems specified in paragraph 3: For pipelines of sewerage systems not provided for in Table 16, designations from K41 to K99 are accepted. 2 If it is necessary to show that a section of the sewerage network is pressure, then the alphanumeric designation is supplemented with the capital letter “H”. for example K31N. |
|
4.4 Alphanumeric designations of heat pipes (pipes for hot water, steam and other coolants) are given in Table 17.
Table 17
GOST 21.205-2016
End of table 17
Name
Buy-digital designation
Steam pipeline (steam pipeline)
Condensate pipeline (condensate pipeline)
those
Notes
1 For heat pipes with different parameters of the coolant, the following designations are used:
From T11 to T19 and from T21 to T29 for pipelines specified in paragraph 1;
From T31 to T39 and from T41 to T49 for pipelines specified in paragraph 2;
From T51 to T59 and from T61 to T69 for pipelines specified in paragraph 3;
From T71 to T79 for pipelines specified in paragraph 4;
From T81 to T89 for pipelines specified in paragraph 5.
2 For heat pipes not provided for in Table 17, designations from T91 to T99 are accepted, regardless of the type of transported medium and its parameters.
3 If it is necessary to show that a section of the condensate pipeline is pressure, then the alphanumeric designation is supplemented with the capital letter “H”, for example T8N.
4.5 Alphanumeric designations of refrigeration pipelines in air conditioning systems are given in Table 18.
Table 18
4.6 Alphanumeric designations of air ducts are given in Table 19.
Table 19
4.7 Alphanumeric designations of gas pipelines (natural gas and liquefied hydrocarbon gases) are given in Table 20.
Table 20
GOST 21.205-2016
End of table 20
4.8 If there are drawings of several pipelines of the same name (one type), each of which needs to be highlighted, they are assigned designations consisting of an alphanumeric designation. given in tables 2-7. with the addition of the pipeline serial number separated by a dot.
Example -B31.1:B31.2
GOST 21.205-2016
(1] EN 12792:2003
Bibliography
Ventilation for buildings. Symbols, terminology and graphical symbols. (“Ventilation in buildings. Terms and graphic symbols”)
GOST 21.205-2016
UDC 691:002:006.354 ISS 01.100.30
Key words: symbols: elements of pipeline systems: external and internal water supply and sewerage systems; heating, ventilation and air conditioning systems, gas supply; pipeline accessories; coolants; air ducts; tanks: pumps; fans; valves; alphanumeric designations of pipelines
Editor N.V. Terentyeva Technical editor V.I. Prusakova Proofreader S.I. Firsova Computer layout E.E. Krugova
Delivered for recruitment on November 17, 2016. Signed for publication on December 16, 2016. Format 60 "84"/j. Ariel typeface. Print sheet 2.76. Educational sheet 2.S2. Circulation S7 copy. Order 3160 Prepared on the basis of the third version provided to the developer!! of the standard .
Published and printed by FSUE "STANDARTINFORM". 12396S Moscow. Grenade Lane.. 4.
Preface
The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-2015 "Interstate standardization system. Basic provisions" and GOST 1.2-2015 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. Rules for development, adoption, updates and cancellations"
Standard information
1 was developed by the Joint Stock Company "Center for Technical and Estimated Standardization in Construction" (JSC "CNS")
2 introduced by the Technical Committee for Standardization TC 465 "Construction"
3 Adopted by the Interstate Council for Standardization, Metrology and Certification (protocol dated August 31, 2016 N 90-P)
|
Short name of the country according to MK (ISO 3166) 004-97 |
Abbreviated name of the national standardization body |
|
|
Belarus Kyrgyzstan |
Ministry of Economy of the Republic of Armenia State Standard of the Republic of Belarus Kyrgyzstandard Rosstandart |
1 area of use
This standard establishes the basic conventional graphic designations of elements of engineering support systems (water supply, sewerage, heating, ventilation, air conditioning, gas supply), thermomechanical and other pipeline systems, as well as alphanumeric designations of pipelines of these systems in drawings and diagrams when designing buildings and structures for various purposes.
This standard uses normative references to the following interstate standards:
3.2 Dimensions of conventional graphic symbols of system elements in drawings and diagrams are taken without respect to scale.
Graphic symbols do not show the actual design of the elements.
3.3 In diagrams made in axonometric projection, system elements may be depicted in a simplified form in the form of contour outlines.
3.4 Symbols of devices, automation equipment and communication lines, as well as letter designations of measured quantities and functional characteristics of devices in diagrams are accepted in accordance with GOST 21.208.
3.5 Conventional graphic symbols of general purpose pipeline elements used in the diagrams are given in Table 1.
Table 1
|
Name |
Symbol |
||
|
2 Heater |
|||
|
3 Cooler |
|||
|
4 Cooler and heater (thermostat) |
|||
|
5 Heat recovery unit |
|||
|
6 Air dryer |
|||
|
7 Humidifier |
|||
|
8 Steam trap (steam trap) |
|||
|
a) general designation |
|||
|
b) U-shaped |
|||
|
c) Z-shaped |
|||
|
d) bellows |
|||
|
e) stuffing box (telescopic) |
|||
|
a) depreciation |
|||
|
b) soundproofing |
|||
|
c) electrically insulating |
|||
|
7 Place of resistance in the pipeline (throttle washer, flow meter orifice, diaphragm) |
|||
|
8 Pipeline support (suspension): a) motionless b) movable |
|||
|
9 Pipeline suspension: a) motionless b) guide |
|||
|
10 Compensation pipe |
|||
|
11 Revision |
|||
|
* Designations of elements may be depicted in accordance with their actual configuration. |
|||
3.9 Symbolic graphic symbols for the direction of flow of liquid, gas, regulation, and drive elements used in the diagrams are given in Table 5.
Table 5
|
Name |
Symbol |
|
|
3 Regulation Note - The direction of the arrow is taken according to GOST 21.208 (Table 1). |
||
|
4 Actuator (drive): |
||
|
a) general designation |
||
|
b) manual |
||
|
c) electromagnetic |
||
|
d) electric machine |
||
|
e) single-acting membrane |
||
|
f) single-acting membrane with positioner |
||
|
g) drive with lateral manual override |
||
|
i) double-acting membrane |
||
|
j) bellows |
||
|
l) float |
||
|
m) spring or lever-weight regulating safety valve device |
||
3.10 Symbols of the main pipeline fittings (devices) are given in Table 6.
Table 6
|
Name |
Symbol |
|
1 Stop valve: a) passing b) corner |
|
|
2 Three-way valve |
|
|
3 Diaphragm valve (diaphragm) |
|
|
4 Control valve: |
|
|
a) passing |
|
|
b) corner |
|
|
c) triple |
|
|
5 Check valve: a) passing b) corner Note - The movement of the working medium through the valve must be directed from the white triangle to the black one. |
|
|
6 Safety valve: a) passing b) corner |
|
|
7 Throttle valve |
|
|
8 Pressure reducing valve Note - The apex of the triangle should be directed towards the increased pressure. |
|
|
9 Thermostatic valve: a) passing b) mixing |
|
|
10 Gate valve (general designation) |
|
|
11 Hose valve |
|
|
12 Disk valve |
|
|
13 Plug valve: a) passing b) corner |
|
|
14 Three-way plug valve |
|
|
15 Four-way valve |
|
|
16 Ball valve |
|
|
17 Three-way ball valve |
|
|
18 Automatic air vent |
|
|
19 Manual radiator air vent |
|
|
20 Water tap |
|
|
21 Urinal tap |
|
|
22 Fire cock (valve) |
|
|
23 Watering tap |
|
|
24 Double adjustment valve |
|
|
25 Mixer: a) general designation b) with swivel spout c) with shower net d) for bidet |
|
|
26 Water meter (water meter) |
|
|
27 Flow meter, general designation |
3.11 Additional symbols of valves by type of drive and control are given in Table 7.
Table 7
|
Description |
Symbol |
|
1 Pressure regulator "towards you". External pressure tap |
|
|
2 Pressure regulator "towards you". Internal pressure tap |
|
|
3 Pressure regulator "after itself". External pressure tap |
|
|
4 Pressure regulator "after itself". Internal pressure tap |
|
|
5 Differential pressure regulator (differential). External pressure taps |
|
|
6 Differential pressure regulator (differential). Internal pressure taps |
|
|
7 Level control |
3.12 Additional symbols of fittings by type of action in the event of a power outage are given in Table 8.
Table 8
|
Description |
Symbol |
|
1 Normally open valve (NO valve) |
|
|
2 Normally closed valves (NC valves) |
|
|
3 Valves with a drive or actuator, which, in the absence or interruption of the supply of energy creating the adjustment force, locks the locking or regulating element in its last position |
3.13 Symbols of graphic designations for elements of heating systems are given in Table 9.
Table 9
|
Name |
Symbol |
|
|
in top views and plans |
in front or side views, in sections and in diagrams |
|
|
1 Smooth heating pipe, register made of smooth pipes |
||
|
2 Finned heating pipe, finned pipe register, heating convector |
||
|
3 Heating convector, built into the floor |
||
|
4 Heating radiator |
||
|
5 Ceiling heating device for radiant heating |
||
|
6 Air heating unit |
||
|
7 Electric heating device |
||
|
* In the designation on views, sections and diagrams, the actual number of pipes is indicated graphically. ** Conventional graphic designation is used only in diagrams. |
||
3.14 Symbols of graphic symbols for elements of ventilation and air conditioning systems used in the diagrams are given in tables 10 - 13. Symbols given in tables 10 - 12 basically correspond.
Table 10 - Symbols of air distribution devices
|
Name |
Symbol |
|
|
1 Supply air distribution device |
||
|
2 Air release device |
||
Table 11 - Symbols of air ducts and their elements
|
Name |
Symbol |
||
|
1 Hard air duct: a) oval b) round c) rectangular |
|||
|
2 Rigid air duct with thermal insulation a) external b) internal |
|||
|
3 Rigid air duct with acoustic insulation: a) external b) internal |
|||
|
4 Flexible air duct |
|||
|
5 Elbow (bend) 90°, 45°, 135°, etc. |
|||
|
6 Branch, flow division |
|||
|
7 The transition is sharp |
|||
|
8 Transition smooth |
|||
|
9 Damper (valve) |
|||
|
10 Sealed damper |
|||
|
11 Flow switch |
|||
|
12 Check valve |
|||
|
13 Pressure relief valve |
|||
|
14 Smoke valve |
|||
|
15 Fire damper |
|||
|
16 Fire and smoke exhaust valve |
|||
|
17 Constant flow control valve |
|||
|
18 Variable flow control valve |
|||
|
20 Fan (general designation) |
|||
|
21 Radial fan |
|||
|
22 Axial fan |
|||
|
23 Air filter |
|||
|
24 Multi-leaf louver valve |
|||
|
25 Grille (blinds) |
|||
|
26 Flow straightener |
|||
|
27 Silencer |
|||
|
28 Gate valve (gate) |
|||
|
29 Hatch for measuring air parameters and/or cleaning air ducts |
|||
|
30 Deflector |
|||
Table 12 - Symbols of devices for air purification (preparation)
|
Name |
Symbol |
|
1 Air mixer with constant flow (flow) |
|
|
2 Air mixer with adjustable flow (flow) |
|
|
3 Air heater |
|
|
4 Air cooler |
|
|
5 Humidifier |
|
|
6 Mixing chamber |
|
|
7 Fan coil |
|
|
8 Ejection closer |
Table 13 - Simplified images of air ducts and channels
|
Name |
Simplified image |
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on plans and views |
in cross section |
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1 Air duct (with a simplified graphical representation of two lines): a) round cross-section. Note - For round air ducts with a diameter of up to 500 mm inclusive, it is allowed not to indicate the center line on the system drawings; b) rectangular section |
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2 Channel underground |
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4 Alphanumeric designations of pipelines
4.1 The alphanumeric designation of a pipeline consists of a capital letter characterizing the type of engineering system (network) and numbers characterizing the purpose of the pipeline and/or its parameters.
Alphanumeric designations of pipelines on drawings and diagrams are applied in accordance with GOST 21.206.
The letter designations of internal engineering systems of buildings and structures and external utility networks included in the alphanumeric designations of pipelines of these systems and networks are taken according to Table 14.
Table 14
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Name |
Letter designation |
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1 Internal systems and external water supply networks |
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2 Internal systems and external sewerage (sewage) networks |
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3 Internal heat supply and hot water supply systems, heating networks |
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4 Refrigeration systems |
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5 Air supply systems, vacuum networks |
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6 Gas distribution and gas consumption networks |
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* If necessary, the Latin letter “G” may be used in the alphanumeric designation of gas pipelines. |
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4.2 Alphanumeric designations of pipelines of external networks and internal water supply systems are given in Table 15.
Table 15
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Name |
Alphanumeric designation |
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1 Domestic and drinking water supply |
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2 Fire water supply |
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3 Industrial water supply |
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General designation |
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Recycled water supply |
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Recycled water, reverse |
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Softened water |
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Water from surface sources (river, lake, etc.) |
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Clarified water from surface sources |
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underground water |
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sea water |
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Notes 1 For pipelines of water supply systems with different parameters and properties of water, the following designations are adopted: From B11 to B19 for pipelines specified in paragraph 1; From B21 to B29 for pipelines specified in paragraph 2; From B31 to B39 for the pipelines specified in paragraph 3. For pipelines of water supply systems not provided for in Table 15, designations from B41 to B99 are accepted. 2 In the case where a domestic drinking or industrial water supply system is also fire-fighting, it is given the designation of a domestic drinking or industrial water supply system, and the purpose is explained in drawings or diagrams. |
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4.3 Alphanumeric designations of pipelines of external networks and internal sewerage systems are given in Table 16.
Table 16
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Name |
Alphanumeric designation |
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1 Domestic sewerage |
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2 Rainwater drainage |
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3 Industrial sewerage: |
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General designation |
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Mechanically polluted waters |
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Chemically polluted waters |
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Acidic waters |
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Alkaline waters |
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Acid-alkaline waters |
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Notes 1 For sewerage (wastewater) systems with different parameters and properties of water, the following designations are accepted: From K11 to K19 for pipelines of sewerage systems specified in paragraph 2; From K21 to K29 for pipelines of sewerage systems specified in paragraph 3; For pipelines of sewerage systems not provided for in Table 16, designations from K41 to K99 are accepted. 2 If it is necessary to show that a section of the sewerage network is pressure, then the alphanumeric designation is supplemented with the capital letter “N”, for example K31N. |
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4.4 Alphanumeric designations of heat pipes (pipes for hot water, steam and other coolants) are given in Table 17.
Table 17
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Name |
Alphanumeric designation |
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1 Hot water pipeline for heating and ventilation (including air conditioning), as well as general for heating, ventilation, hot water supply and technological processes: |
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Serving Back |
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2 Hot water pipe for hot water supply: Serving Circulating 3 Hot water pipeline for technological processes: |
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Serving Back |
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4 Steam pipeline (steam pipeline) |
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5 Condensate pipeline (condensate pipeline) |
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Notes 1 For heat pipes with different parameters of the coolant, the following designations are used: From T11 to T19 and from T21 to T29 for pipelines specified in paragraph 1; From T31 to T39 and from T41 to T49 for pipelines specified in paragraph 2; From T51 to T59 and from T61 to T69 for pipelines specified in paragraph 3; From T71 to T79 for pipelines specified in paragraph 4; From T81 to T89 for pipelines specified in paragraph 5. 2 For heat pipes not provided for in Table 17, designations from T91 to T99 are accepted, regardless of the type of transported medium and its parameters. 3 If it is necessary to show that a section of the condensate pipeline is pressure, then the alphanumeric designation is supplemented with the capital letter “N”, for example T8N. |
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4.5 Alphanumeric designations of refrigeration pipelines in air conditioning systems are given in Table 18.
Table 18
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Name |
Alphanumeric designation |
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1 Coolant supply pipeline |
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2 Coolant return pipeline |
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3 Liquid pipe |
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4 Refrigerant gas piping (hot gas) |
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5 Refrigerant gas piping (cold gas) |
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Note - For pipelines not provided for in Table 18, designations with sequential numbering should be adopted in continuation of those indicated in this table. |
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4.6 Alphanumeric designations of air ducts are given in Table 19.
Table 19
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Name |
Alphanumeric designation |
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1 Air intake pipe |
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2 Compressed air pipe |
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3 Vacuum network pipeline (vacuum pipeline) |
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Note - For air ducts not provided for in Table 19, designations with sequential numbering should be adopted in continuation of those indicated in this table. |
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4.7 Alphanumeric designations of gas pipelines (natural gas and liquefied hydrocarbon gases) are given in Table 20.
Table 20
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Name |
Alphanumeric designation |
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1 Gas pipeline: Low pressure up to 0.1 MPa |
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Medium pressure St. 0.1 to 0.3 MPa incl. |
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High pressure St. 0.3 to 0.6 MPa incl. |
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High pressure St. 0.6 MPa |
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2 Purge gas pipeline |
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3 Vacuum pipeline |
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4 Gas pipeline (pipeline) safety |
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Note - For gas pipelines not provided for in Table 20, designations with sequential numbering should be adopted in continuation of those indicated in this table. If you are a user of the Internet version of the GARANT system, you can open this document right now or request it via the Hotline in the system. | |||