Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
Clauses 6 and 8 of this part are mandatory, and the rest are recommendatory.
GB 5135 has incorporated or will incorporate the following parts under the general title of Automatic sprinkler system:
-Part 1: Sprinklers;
-Part 2: Wet system alarm valves, retard chamber, water motor alarm;
-Part 3: Water mist nozzles;
-Part 4: Dry pipe valves;
-Part 5: Deluge alarm valves;
-Part 6: Convention valves;
-Part 7: Water flow indicators;
-Part 8: Accelerator;
-Part 9: Early suppression fast response (ESFR) sprinklers;
-Part 10: Pressure switch;
-Part 11: Grooved couplings and fittings;
-Part 13: Performance requirements and test methods of drencher nozzle;
-Part 14: Preaction devices;
-Part 15: Domestic sprinklers;
-Part 16: Flexible sprinkler hose with fittings;
-Part 17: Pressure reducing valves;
-Part 18: Pipe hangers;
-Part 19: Plastic pipe and fittings;
-Part 20: Coating steel pipe;
-Part 21: Inspector's test connection;
-Part 22: Specific application sprinklers;
…
This is Part 1 of GB 5135.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB5135.1-2003 Automatic sprinkler system-Part 1: Sprinkler and GB 5135.12-2006 Automatic sprinkler system-Part 12: Extended coverage sprinkler. In addition to a number of editorial changes, the following main technical deviations have been made with respect to GB 5135.1-2003 (the previous edition):
-The scope has been modified (see clause 1; clause 1 of Edition 2003);
-The provisions on classification by the structural form have been removed (see 4.1 of Edition 2003);
-The requirements for model designation have been modified (see 5.3; 5.3 of Edition 2003);
-The requirements and test methods for sprinkler mass deviations have been added (see 6.1.2 and 7.2);
-The requirements for sealing structures have been added (see 6.4);
-The requirements for flow constant have been modified (see 6.6; 6.4 of Edition 2003);
-The requirements and test methods for water distribution of pendent and upright sprinklers with the nominal flow constants of 161 and 202 have been added (see 6.7.2 and 7.5.2);
-The requirements and test methods for water distribution of EC sprinkler have been added (see 6.7.3, 7.5.3 and 7.5.4);
-The requirements for static operating temperature have been modified (see 6.9; 6.7 of Edition 2003);
-The requirements and test methods for functions of EC sprinklers have been added (see 6.10.3 and 7.8);
-The requirements for low temperature resistance have been removed (see 6.17 of Edition 2003);
-The requirements and test methods for tumble resistance have been added (see 6.20 and 7.18);
-The requirements and test methods for freezing resistance have been added (see 6.21 and 7.19);
-The requirements and test methods for dynamic heating performance for flush, recessed and concealed sprinklers have been modified (see 6.23.1 and 7.21.2; 6.30 and 7.29 in Edition 2003);
-The requirements and test methods for resistance to magnesium chloride stress corrosion have been added (see 6.24.2 and 7.22.2);
-The requirements and test methods for resistance to sulfur dioxide/carbon dioxide corrosion have been added (see 6.25 and 7.23);
-The requirements and test methods for wall wetting performance of EC sprinklers have been added (see 6.32 and 7.30);
-The requirements and test methods for carton fire performance have been added (see 6.33.2 and 7.31.3);
-The inspection rules have been modified (see clause 8; clause 8 of Edition 2003);
-Annex D has been added (see Annex D);
-Annex E has been removed (see Annex E of Edition 2003).
This part has been prepared by reference to ISO 6182-1:2014 Fire protection-Automatic sprinkler systems-Part 1: Requirements and test methods for sprinklers.
This part was proposed by and was prepared by the Ministry of Emergency Management of the People's Republic of China.
The previous editions of this part are as follows:
-GB 5135-1985, GB 5135-1993, GB 5135.1-2003;
-GB 5135.12-2006.
Automatic sprinkler system-
Part 1: Sprinklers
1 Scope
This part of GB 5135 specifies classification, nominal flow constant, interface thread, color coding, model designation, requirements, test methods, inspection rules, instructions for use, and packaging, transportation and storage for sprinklers of automatic sprinkler systems.
This part is applicable to sprinklers of automatic sprinkler systems.
This part is not applicable to early suppression fast response (ESFR) sprinklers, domestic sprinklers, sprinklers for specific purposes and open-close sprinklers.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads-Part 2: Taper internal and external threads
GB/T 31431-2015 Standard burning items for class A fire test of extinguishing system
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
sprinkler
device that releases a stream of water and distributes it in a designed pattern and quantity
Note: It reacts automatically within a predetermined temperature range when exposed to sufficient heat.
3.2
response time index, RTI
measure of sprinkler sensitivity, which is calculated from the equation as follows:
RTI＝τu0.5
where,
RTI-the response time index, expressed in units of (m·s)0.5;
τ-the time constant, expressed in seconds (s), of the heat-responsive element;
u-the gas velocity, expressed in meters per second (m/s).
3.3
standard orientation
orientation that produces the shortest response time with the axis of the sprinkler inlet perpendicular to the air flow
Note: In the case of symmetrical heat-responsive elements, standard orientation is with the air flow perpendicular to both the axis of the waterway and the plane of the frame arms; in the case of non-symmetrical heat-responsive elements, it is with the air flow perpendicular to both the waterway axis and the plane of the frame arms, and the heat-responsive element located upstream of the airflow.
3.4
worst-case orientation
orientation that produces the longest response time with the axis of the sprinkler inlet perpendicular to the airflow
3.5
assembly load
force exerted on the sprinkler body when the hydrostatic pressure of the sprinkler inlet is 0 MPa
3.6
service load
combined force exerted on the sprinkler body by the assembly load of the sprinkler and the equivalent force of a 1.2 MPa hydrostatic pressure of the inlet
3.7
design load
force exerted on the heat-responsive element at the service load of the sprinkler
3.8
operating temperature
temperature at which the heat-responsive element operates in the liquid bath with the sprinkler at a certain heating rate
4 Classification
4.1 Types of sprinkler according to type of heat-responsive element
4.1.1 Fusible element sprinkler
sprinkler that opens under the influence of heat by the melting the alloy of a fusible element
4.1.2 Glass bulb sprinkler
sprinkler that opens under the influence of heat by the bursting of the glass bulb through pressure resulting from thermal expansion of the fluid enclosed therein
4.2 Types of sprinkler according to installation position
4.2.1 Sidewall sprinkler
sprinkler installed against a wall and giving a one-sided water distribution (in the form of half curvilinear)
4.2.2 Pendent sprinkler
sprinkler arranged by pendent installation such that the water stream is directed downwards against the distribution plate
4.2.3 Upright sprinkler
sprinkler arranged by upright installation such that the water stream is directed upwards against the distribution plate
4.3 Types of sprinkler according to sprinkler sensitivity
4.3.1 Fast-response sprinkler
sprinkler having a response time index (RTI) less than or equal to 50(m·s)0.5
4.3.2 Special-response sprinkler
sprinkler having an average response time index (RTI) greater than 50(m·s)0.5 and less than or equal to 80(m·s)0.5
4.3.3 Standard-response sprinkler
sprinkler having a response time index (RTI) greater than 80(m·s)0.5 and less than or equal to 350(m·s)0.5
4.4 Types of sprinkler according to protected area
4.4.1 Standard coverage sprinkler
single pendent or upright sprinkler, the protected area of which does not exceed 20 m2, and single sidewall sprinkler, the protected area of which does not exceed 18 m2
Note: Unless otherwise specified, standard coverage sprinkler is generally referred to as “sprinkler”.
4.4.2 Extended coverage sprinkler
single sprinkler, the protected area of which is greater than that of the standard coverage sprinkler and does not exceed 36 m2, henceforth “EC sprinkler”
4.5 Special types of sprinkler
4.5.1 Dry sprinkler
an assembly comprising of a special extension and a sprinkler mounted at the outlet of the extension with a seal at the inlet that prevents water from entering the extension until it is released by operation of the sprinkler
4.5.2 Flush sprinkler
sprinkler of which all or part of the body, including the shank thread, is mounted above the lower plane of the ceiling, but all of the heat-responsive collector is below the lower plane of the ceiling
4.5.3 Recessed sprinkler
sprinkler of which all or part of the body is mounted within a housing recessed in the celling
4.5.4 Concealed sprinkler
recessed sprinkler having a cover plate
4.5.5 Coated sprinkler
sprinkler that has a coating or plating for corrosion protection or decoration
4.5.6 Sprinkler with water shield
sprinkler that is provided with a water shield mounted above the heat-responsive element to protect it from water discharged by sprinklers at higher elevations
5 Nominal flow constant, interface thread, color coding and model designation
5.1 Nominal flow constant and interface thread
See table 1 for the nominal flow constant and interface thread of sprinkler.
Table 1 Nominal flow constant and interface thread
Nominal flow constant, K Interface thread
57 R2 1/2, R2 3/8
80 R2 1/2
115 R2 3/4
161 R2 3/4
202 R2 3/4, R2 1
5.2 Nominal operating temperature and color coding
See Table 2 for the nominal operating temperature and color coding of sprinkler.
Fusible element sprinklers shall be color coded on the yoke arms or corresponding positions.
Table 2 Nominal operating temperature and color coding
Glass bulb sprinkler Fusible element sprinkler
Nominal operating temperature ℃ Liquid color code Nominal operating temperature ℃ Color code
57 Orange 57–77 Uncolored
68 Red 80–107 White
79 Yellow 121–149 Blue
93 Green 163–191 Red
107 Green 204–246 Green
121 Blue 260–302 Orange
141 Blue 320–343 Orange
163 Mauve - -
182 Mauve - -
204 Black - -
227 Black - -
260 Black - -
343 Black - -
Note: “-” represents that no requirement is imposed.
5.3 Model designation
5.3.1 The model designation of sprinkler consists of product code, feature code, nominal flow contact, nominal operating temperature, custom code, etc.
5.3.2 The product code is “ZST”, representing sprinklers of automatic sprinkler system.
5.3.3 The feature code represents installation position and other features of sprinkler, which is shown as follows:
a) Upright sprinkler: Z;
b) Pendent sprinkler: X;
c) Upright sidewall sprinkler: BZ;
d) Pendent sidewall sprinkler: BX;
e) Horizontal sidewall sprinkler: BS;
f) Flush sprinkler: DQ;
g) Recessed sprinkler: DR;
h) Concealed sprinkler: DY;
i) Dry pendent sprinkler: GX;
j) Dry upright sprinkler: GZ.
5.3.4 The model of sprinkler is designated as follows:
a) Extra code of "K", "T" and "EC" shall be added before the product code for fast-response sprinkler, special-response sprinkler and extended coverage sprinkler respectively and separated from product code by "-". No code before product code is required for standard-response sprinklers.
b) The custom code is specified by manufacturer to represent information like the type of the heat responsive element, special product structure and so on. It is made up of capital English letters, Arabic numerals or their combinations, and should not exceed 3 characters.
Example 1:
“ZSTX80-93℃ Q5”represents a pendent standard-response sprinkler, with nominal flow constant of 80, nominal operating temperature of 93℃, and having a Φ5mm glass bulb heat-responsive element.
Example 2:
“K-ZSTZ115-74℃ YS” represents an upright fast-response sprinkler, with nominal flow constant of 115, nominal operating temperature of 74℃, and having a fusible alloy heat-responsive element and water shield.
Example 3:
“EC-ZSTBS161-72℃ Y” represents a horizontal extended coverage sprinkler of sidewall type, with nominal flow constant of 161, nominal operating temperature of 72℃, and having a fusible alloy heat-responsive element.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
4.1 Types of sprinkler according to type of heat-responsive element
4.2 Types of sprinkler according to installation position
4.3 Types of sprinkler according to sprinkler sensitivity
4.4 Types of sprinkler according to protected area
4.5 Special types of sprinkler
5 Nominal flow constant, interface thread, color coding and model designation
5.1 Nominal flow constant and interface thread
5.2 Nominal operating temperature and color coding
5.3 Model designation
6 Requirements
6.1 General
6.2 Interface thread
6.3 Appearance and marking
6.4 Sealing structure
6.5 Leakage resistance and hydrostatic strength
6.6 Flow constant
6.7 Water distribution
6.8 Water distribution above and below the deflector
6.9 Static operating temperature
6.10 Function
6.11 Water hammer resistance
6.12 Service load and frame strength
6.13 Strength of heat-responsive element
6.14 Deflector strength
6.15 Fatigue strength
6.16 Thermal stability
6.17 Vibration resistance
6.18 Mechanical shock resistance
6.19 Impact resistance
6.20 Tumbling resistance
6.21 Freezing resistance
6.22 High-temperature resistance
6.23 Dynamic heating performance
6.24 Stress corrosion resistance
6.25 Resistance to sulfur dioxide/ carbon dioxide corrosion
6.26 Resistance to salt spray corrosion
6.27 Resistance to moist air corrosion
6.28 Resistance to ambient temperature
6.29 Lateral discharge
6.30 Water shield performance
6.31 Vacuum resistance
6.32 Wall wetting performance
6.33 Fire extinguishing performance
7 Test methods
7.1 Visual examination
7.2 Mass measurement
7.3 Test of leakage resistance and hydraulic strength
7.4 Water flow constant test
7.5 Water distribution test
7.6 Water distribution above and below the deflector
7.7 Static operating temperature test
7.8 Functional test
7.9 Water hammer test
7.10 Determination of service load and frame strength test
7.11 Strength test of heat-responsive elements
7.12 Strength test of deflector
7.13 Fatigue strength test
7.14 Thermal stability test
7.15 Vibration tests
7.16 Mechanical shock test
7.17 Impact test
7.18 Tumble test
7.19 Freezing test
7.20 High temperature test
7.21 Dynamic heating test
7.22 Stress corrosion test
7.23 Sulfur dioxide/carbon dioxide corrosion test
7.24 Salt spray corrosion test
7.25 Moist air corrosion test
7.26 Ambient temperature test
7.27 Lateral discharge test
7.28 Water shield test
7.29 Vacuum test
7.30 Wall wetting test
7.31 Fire test
8 Inspection rules
8.1 Type inspection
8.2 Delivery inspection
8.3 Routine inspection
8.4 Validation inspection
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
Clauses 6 and 8 of this part are mandatory, and the rest are recommendatory.
GB 5135 has incorporated or will incorporate the following parts under the general title of Automatic sprinkler system:
-Part 1: Sprinklers;
-Part 2: Wet system alarm valves, retard chamber, water motor alarm;
-Part 3: Water mist nozzles;
-Part 4: Dry pipe valves;
-Part 5: Deluge alarm valves;
-Part 6: Convention valves;
-Part 7: Water flow indicators;
-Part 8: Accelerator;
-Part 9: Early suppression fast response (ESFR) sprinklers;
-Part 10: Pressure switch;
-Part 11: Grooved couplings and fittings;
-Part 13: Performance requirements and test methods of drencher nozzle;
-Part 14: Preaction devices;
-Part 15: Domestic sprinklers;
-Part 16: Flexible sprinkler hose with fittings;
-Part 17: Pressure reducing valves;
-Part 18: Pipe hangers;
-Part 19: Plastic pipe and fittings;
-Part 20: Coating steel pipe;
-Part 21: Inspector's test connection;
-Part 22: Specific application sprinklers;
…
This is Part 1 of GB 5135.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB5135.1-2003 Automatic sprinkler system-Part 1: Sprinkler and GB 5135.12-2006 Automatic sprinkler system-Part 12: Extended coverage sprinkler. In addition to a number of editorial changes, the following main technical deviations have been made with respect to GB 5135.1-2003 (the previous edition):
-The scope has been modified (see clause 1; clause 1 of Edition 2003);
-The provisions on classification by the structural form have been removed (see 4.1 of Edition 2003);
-The requirements for model designation have been modified (see 5.3; 5.3 of Edition 2003);
-The requirements and test methods for sprinkler mass deviations have been added (see 6.1.2 and 7.2);
-The requirements for sealing structures have been added (see 6.4);
-The requirements for flow constant have been modified (see 6.6; 6.4 of Edition 2003);
-The requirements and test methods for water distribution of pendent and upright sprinklers with the nominal flow constants of 161 and 202 have been added (see 6.7.2 and 7.5.2);
-The requirements and test methods for water distribution of EC sprinkler have been added (see 6.7.3, 7.5.3 and 7.5.4);
-The requirements for static operating temperature have been modified (see 6.9; 6.7 of Edition 2003);
-The requirements and test methods for functions of EC sprinklers have been added (see 6.10.3 and 7.8);
-The requirements for low temperature resistance have been removed (see 6.17 of Edition 2003);
-The requirements and test methods for tumble resistance have been added (see 6.20 and 7.18);
-The requirements and test methods for freezing resistance have been added (see 6.21 and 7.19);
-The requirements and test methods for dynamic heating performance for flush, recessed and concealed sprinklers have been modified (see 6.23.1 and 7.21.2; 6.30 and 7.29 in Edition 2003);
-The requirements and test methods for resistance to magnesium chloride stress corrosion have been added (see 6.24.2 and 7.22.2);
-The requirements and test methods for resistance to sulfur dioxide/carbon dioxide corrosion have been added (see 6.25 and 7.23);
-The requirements and test methods for wall wetting performance of EC sprinklers have been added (see 6.32 and 7.30);
-The requirements and test methods for carton fire performance have been added (see 6.33.2 and 7.31.3);
-The inspection rules have been modified (see clause 8; clause 8 of Edition 2003);
-Annex D has been added (see Annex D);
-Annex E has been removed (see Annex E of Edition 2003).
This part has been prepared by reference to ISO 6182-1:2014 Fire protection-Automatic sprinkler systems-Part 1: Requirements and test methods for sprinklers.
This part was proposed by and was prepared by the Ministry of Emergency Management of the People's Republic of China.
The previous editions of this part are as follows:
-GB 5135-1985, GB 5135-1993, GB 5135.1-2003;
-GB 5135.12-2006.
Automatic sprinkler system-
Part 1: Sprinklers
1 Scope
This part of GB 5135 specifies classification, nominal flow constant, interface thread, color coding, model designation, requirements, test methods, inspection rules, instructions for use, and packaging, transportation and storage for sprinklers of automatic sprinkler systems.
This part is applicable to sprinklers of automatic sprinkler systems.
This part is not applicable to early suppression fast response (ESFR) sprinklers, domestic sprinklers, sprinklers for specific purposes and open-close sprinklers.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads-Part 2: Taper internal and external threads
GB/T 31431-2015 Standard burning items for class A fire test of extinguishing system
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
sprinkler
device that releases a stream of water and distributes it in a designed pattern and quantity
Note: It reacts automatically within a predetermined temperature range when exposed to sufficient heat.
3.2
response time index, RTI
measure of sprinkler sensitivity, which is calculated from the equation as follows:
RTI＝τu0.5
where,
RTI-the response time index, expressed in units of (m·s)0.5;
τ-the time constant, expressed in seconds (s), of the heat-responsive element;
u-the gas velocity, expressed in meters per second (m/s).
3.3
standard orientation
orientation that produces the shortest response time with the axis of the sprinkler inlet perpendicular to the air flow
Note: In the case of symmetrical heat-responsive elements, standard orientation is with the air flow perpendicular to both the axis of the waterway and the plane of the frame arms; in the case of non-symmetrical heat-responsive elements, it is with the air flow perpendicular to both the waterway axis and the plane of the frame arms, and the heat-responsive element located upstream of the airflow.
3.4
worst-case orientation
orientation that produces the longest response time with the axis of the sprinkler inlet perpendicular to the airflow
3.5
assembly load
force exerted on the sprinkler body when the hydrostatic pressure of the sprinkler inlet is 0 MPa
3.6
service load
combined force exerted on the sprinkler body by the assembly load of the sprinkler and the equivalent force of a 1.2 MPa hydrostatic pressure of the inlet
3.7
design load
force exerted on the heat-responsive element at the service load of the sprinkler
3.8
operating temperature
temperature at which the heat-responsive element operates in the liquid bath with the sprinkler at a certain heating rate
4 Classification
4.1 Types of sprinkler according to type of heat-responsive element
4.1.1 Fusible element sprinkler
sprinkler that opens under the influence of heat by the melting the alloy of a fusible element
4.1.2 Glass bulb sprinkler
sprinkler that opens under the influence of heat by the bursting of the glass bulb through pressure resulting from thermal expansion of the fluid enclosed therein
4.2 Types of sprinkler according to installation position
4.2.1 Sidewall sprinkler
sprinkler installed against a wall and giving a one-sided water distribution (in the form of half curvilinear)
4.2.2 Pendent sprinkler
sprinkler arranged by pendent installation such that the water stream is directed downwards against the distribution plate
4.2.3 Upright sprinkler
sprinkler arranged by upright installation such that the water stream is directed upwards against the distribution plate
4.3 Types of sprinkler according to sprinkler sensitivity
4.3.1 Fast-response sprinkler
sprinkler having a response time index (RTI) less than or equal to 50(m·s)0.5
4.3.2 Special-response sprinkler
sprinkler having an average response time index (RTI) greater than 50(m·s)0.5 and less than or equal to 80(m·s)0.5
4.3.3 Standard-response sprinkler
sprinkler having a response time index (RTI) greater than 80(m·s)0.5 and less than or equal to 350(m·s)0.5
4.4 Types of sprinkler according to protected area
4.4.1 Standard coverage sprinkler
single pendent or upright sprinkler, the protected area of which does not exceed 20 m2, and single sidewall sprinkler, the protected area of which does not exceed 18 m2
Note: Unless otherwise specified, standard coverage sprinkler is generally referred to as “sprinkler”.
4.4.2 Extended coverage sprinkler
single sprinkler, the protected area of which is greater than that of the standard coverage sprinkler and does not exceed 36 m2, henceforth “EC sprinkler”
4.5 Special types of sprinkler
4.5.1 Dry sprinkler
an assembly comprising of a special extension and a sprinkler mounted at the outlet of the extension with a seal at the inlet that prevents water from entering the extension until it is released by operation of the sprinkler
4.5.2 Flush sprinkler
sprinkler of which all or part of the body, including the shank thread, is mounted above the lower plane of the ceiling, but all of the heat-responsive collector is below the lower plane of the ceiling
4.5.3 Recessed sprinkler
sprinkler of which all or part of the body is mounted within a housing recessed in the celling
4.5.4 Concealed sprinkler
recessed sprinkler having a cover plate
4.5.5 Coated sprinkler
sprinkler that has a coating or plating for corrosion protection or decoration
4.5.6 Sprinkler with water shield
sprinkler that is provided with a water shield mounted above the heat-responsive element to protect it from water discharged by sprinklers at higher elevations
5 Nominal flow constant, interface thread, color coding and model designation
5.1 Nominal flow constant and interface thread
See table 1 for the nominal flow constant and interface thread of sprinkler.
Table 1 Nominal flow constant and interface thread
Nominal flow constant, K Interface thread
57 R2 1/2, R2 3/8
80 R2 1/2
115 R2 3/4
161 R2 3/4
202 R2 3/4, R2 1
5.2 Nominal operating temperature and color coding
See Table 2 for the nominal operating temperature and color coding of sprinkler.
Fusible element sprinklers shall be color coded on the yoke arms or corresponding positions.
Table 2 Nominal operating temperature and color coding
Glass bulb sprinkler Fusible element sprinkler
Nominal operating temperature ℃ Liquid color code Nominal operating temperature ℃ Color code
57 Orange 57–77 Uncolored
68 Red 80–107 White
79 Yellow 121–149 Blue
93 Green 163–191 Red
107 Green 204–246 Green
121 Blue 260–302 Orange
141 Blue 320–343 Orange
163 Mauve - -
182 Mauve - -
204 Black - -
227 Black - -
260 Black - -
343 Black - -
Note: “-” represents that no requirement is imposed.
5.3 Model designation
5.3.1 The model designation of sprinkler consists of product code, feature code, nominal flow contact, nominal operating temperature, custom code, etc.
5.3.2 The product code is “ZST”, representing sprinklers of automatic sprinkler system.
5.3.3 The feature code represents installation position and other features of sprinkler, which is shown as follows:
a) Upright sprinkler: Z;
b) Pendent sprinkler: X;
c) Upright sidewall sprinkler: BZ;
d) Pendent sidewall sprinkler: BX;
e) Horizontal sidewall sprinkler: BS;
f) Flush sprinkler: DQ;
g) Recessed sprinkler: DR;
h) Concealed sprinkler: DY;
i) Dry pendent sprinkler: GX;
j) Dry upright sprinkler: GZ.
5.3.4 The model of sprinkler is designated as follows:
a) Extra code of "K", "T" and "EC" shall be added before the product code for fast-response sprinkler, special-response sprinkler and extended coverage sprinkler respectively and separated from product code by "-". No code before product code is required for standard-response sprinklers.
b) The custom code is specified by manufacturer to represent information like the type of the heat responsive element, special product structure and so on. It is made up of capital English letters, Arabic numerals or their combinations, and should not exceed 3 characters.
Example 1:
“ZSTX80-93℃ Q5”represents a pendent standard-response sprinkler, with nominal flow constant of 80, nominal operating temperature of 93℃, and having a Φ5mm glass bulb heat-responsive element.
Example 2:
“K-ZSTZ115-74℃ YS” represents an upright fast-response sprinkler, with nominal flow constant of 115, nominal operating temperature of 74℃, and having a fusible alloy heat-responsive element and water shield.
Example 3:
“EC-ZSTBS161-72℃ Y” represents a horizontal extended coverage sprinkler of sidewall type, with nominal flow constant of 161, nominal operating temperature of 72℃, and having a fusible alloy heat-responsive element.
Contents of GB 5135.1-2019
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
4.1 Types of sprinkler according to type of heat-responsive element
4.2 Types of sprinkler according to installation position
4.3 Types of sprinkler according to sprinkler sensitivity
4.4 Types of sprinkler according to protected area
4.5 Special types of sprinkler
5 Nominal flow constant, interface thread, color coding and model designation
5.1 Nominal flow constant and interface thread
5.2 Nominal operating temperature and color coding
5.3 Model designation
6 Requirements
6.1 General
6.2 Interface thread
6.3 Appearance and marking
6.4 Sealing structure
6.5 Leakage resistance and hydrostatic strength
6.6 Flow constant
6.7 Water distribution
6.8 Water distribution above and below the deflector
6.9 Static operating temperature
6.10 Function
6.11 Water hammer resistance
6.12 Service load and frame strength
6.13 Strength of heat-responsive element
6.14 Deflector strength
6.15 Fatigue strength
6.16 Thermal stability
6.17 Vibration resistance
6.18 Mechanical shock resistance
6.19 Impact resistance
6.20 Tumbling resistance
6.21 Freezing resistance
6.22 High-temperature resistance
6.23 Dynamic heating performance
6.24 Stress corrosion resistance
6.25 Resistance to sulfur dioxide/ carbon dioxide corrosion
6.26 Resistance to salt spray corrosion
6.27 Resistance to moist air corrosion
6.28 Resistance to ambient temperature
6.29 Lateral discharge
6.30 Water shield performance
6.31 Vacuum resistance
6.32 Wall wetting performance
6.33 Fire extinguishing performance
7 Test methods
7.1 Visual examination
7.2 Mass measurement
7.3 Test of leakage resistance and hydraulic strength
7.4 Water flow constant test
7.5 Water distribution test
7.6 Water distribution above and below the deflector
7.7 Static operating temperature test
7.8 Functional test
7.9 Water hammer test
7.10 Determination of service load and frame strength test
7.11 Strength test of heat-responsive elements
7.12 Strength test of deflector
7.13 Fatigue strength test
7.14 Thermal stability test
7.15 Vibration tests
7.16 Mechanical shock test
7.17 Impact test
7.18 Tumble test
7.19 Freezing test
7.20 High temperature test
7.21 Dynamic heating test
7.22 Stress corrosion test
7.23 Sulfur dioxide/carbon dioxide corrosion test
7.24 Salt spray corrosion test
7.25 Moist air corrosion test
7.26 Ambient temperature test
7.27 Lateral discharge test
7.28 Water shield test
7.29 Vacuum test
7.30 Wall wetting test
7.31 Fire test
8 Inspection rules
8.1 Type inspection
8.2 Delivery inspection
8.3 Routine inspection
8.4 Validation inspection
