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GB 44016-2024: Electro-magnetic emergency shut-off valve for gas
GB 44016-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.140
CCS P 47
Electro-magnetic Emergency Shut-off Valve for Gas
ISSUED ON. APRIL 29, 2024
IMPLEMENTED ON. AUGUST 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 7
4 Classification and Models... 7
4.1 Classification... 7
4.2 Model... 7
5 Material and Structure... 8
5.1 Material... 8
5.2 Structure... 10
6 Requirements... 13
6.1 General Requirements... 13
6.2 Appearance... 14
6.3 Case... 14
6.4 Strength of Pressure-bearing Parts... 14
6.5 Air Tightness... 14
6.6 Rated Flow... 15
6.7 Emergency Shut-off Performance... 15
6.8 Torque Resistance... 16
6.9 Bending Resistance... 16
6.10 Impact Resistance... 16
6.11 Durability... 17
6.12 Temperature Resistance and Damp Heat Resistance... 17
6.13 Valve Position Status Indication... 17
6.14 Electrical Safety... 17
6.15 Explosion-proof Performance (Ex)... 18
6.16 Protection Performance (IP)... 18
6.17 Properties of Non-metallic Materials... 18
6.18 Corrosion Resistance... 18
6.19 Temperature Rise of Electromagnetic Coil... 18
6.20 Electromagnetic Compatibility Safety... 18
7 Test Methods... 19
7.1 Test Conditions... 19
7.2 Appearance Inspection... 20
7.3 Case Inspection... 20
7.4 Strength Test of Pressure-bearing Parts... 20
7.5 Air Tightness Test... 20
7.6 Rated Flow Test... 21
7.7 Emergency Shut-off Performance Test... 23
7.8 Torque Resistance Test... 24
7.9 Bending Resistance Test... 25
7.10 Impact Resistance Test... 26
7.11 Durability Test... 26
7.12 Temperature Resistance and Damp Heat Resistance Test... 27
7.13 Valve Position Status Indication Test... 27
7.14 Electrical Safety Test... 27
7.15 Explosion-proof Performance Test... 28
7.16 Protection Performance Test... 28
7.17 Non-metallic Material Properties Test... 28
7.18 Corrosion Resistance Test... 28
7.19 Temperature Rise Test of Electromagnetic Coil... 28
7.20 Electromagnetic Compatibility Safety Test... 28
8 Inspection Rules... 29
8.1 Inspection Items... 29
8.2 Exit-factory Inspection... 29
8.3 Type Inspection... 29
9 Marking and Instructions for Use... 30
9.1 Marking... 30
9.2 Instructions for Use... 31
10 Packaging, Transportation and Storage... 31
10.1 Packaging... 31
10.2 Transportation... 32
10.3 Storage... 32
Electro-magnetic Emergency Shut-off Valve for Gas
1 Scope
This document defines the terms and definitions of electro-magnetic emergency shut-off valve
for gas; specifies the classification and model, material and structure, and requirements;
describes corresponding test methods; clarifies the inspection rules, and the requirements for
marking and instructions for use, packaging, transportation, and storage, etc.
This document is applicable to electro-magnetic emergency shut-off valves for gas installed on
gas user pipelines where the maximum working pressure is not greater than 0.4 MPa and the
nominal dimension is not greater than DN300, and the transmission media are natural gas,
liquefied petroleum gas (including liquefied petroleum gas mixed with air) and artificial gas
(hereinafter referred to as the “shut-off valves”).
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 699 Quality Carbon Structure Steels
GB/T 700 Carbon Structural Steels
GB/T 1173 Casting Aluminum Alloy
GB/T 1220 Stainless Steel Bars
GB/T 1239.2 Cold Coiled Helical Springs Technical Specifications - Part 2.Compressions
Spring
GB/T 1348 Spheroidal Graphite Iron Castings
GB/T 1591 High-strength Low-alloy Structural Steel
GB/T 1690-2010 Rubber, Vulcanized or Thermoplastic - Determination of the Effect of Liquids
GB/T 3191 Extrusion Rods and Bars of Aluminum and Aluminum Alloys
GB(/T) 3836 (all parts) Explosive Atmospheres
GB/T 4208 Degrees of Protection Provided by Enclosure (IP code)
b) Springs with a metal wire diameter less than or equal to 2.5 mm shall be made of
corrosion-resistant materials. Springs with a metal wire diameter greater than 2.5 mm
shall be made of corrosion-resistant materials or other materials with anti-corrosion
protection.
5.1.3 Non-metallic materials
5.1.3.1 Non-metallic materials in contact with gas shall be gas-resistant.
5.1.3.2 The surface of rubber parts shall be smooth and free of defects, such as. bubbles, lack
of glue and delamination, etc.
5.1.3.3 The O-shaped rubber sealing ring shall comply with the provisions of GB/T 23658.
5.1.4 Electrical components
5.1.4.1 The cable materials shall comply with the provisions of GB/T 5013.1 and GB/T 5023.1.
5.1.4.2 The electromagnetic coil enameled wire shall be copper enameled wire and comply with
the relevant provisions of GB/T 6109 (all parts).
5.1.4.3 The material of the electromagnetic coil case shall comply with the provisions of non-
metallic cases and non-metallic components of the case, metal case and metal components of
the case in GB(/T) 3836 (all parts).
5.2 Structure
5.2.1 Design pressure
Pressure-bearing parts include metal components that bear pressure during normal operation
and components that bear pressure after the pressure differential seal fails. When the maximum
working pressure is 0.01 MPa or 0.1 MPa, the design pressure shall be 0.4 MPa; when the
maximum working pressure is 0.4 MPa, the design pressure shall be 0.6 MPa.
5.2.2 Structural length
The structural length shall comply with the provisions of GB/T 12221.
5.2.3 Structural design
5.2.3.1 The mass and dimensions of the shut-off valve materials and the assembly method of
each component shall ensure that the structure of the shut-off valve has sufficient strength and
shall be able to withstand the mechanical stress that it may experience during installation and
maintenance.
5.2.3.2 Shut-off valves with nominal dimensions less than or equal to DN50 shall be threaded
or flanged. Shut-off valves with nominal dimensions greater than DN50 shall be flanged.
5.2.3.3 Except for the aluminum alloy flange, the dimensions and sealing surface types of other
6.1.3 The current shall comply with the following requirements.
a) If the power supply is used to directly drive the coil to generate electromagnetic force,
indicate the maximum current;
b) If capacitor discharge is used to obtain the electromagnetic force, indicate the
discharge current;
c) If there are internal circuits and other electronic components, indicate the static power
consumption.
6.2 Appearance
6.2.1 The shut-off valves shall be made of anti-corrosion materials, or the surface shall be
treated with anti-corrosion and anti-trust, etc. The coating shall be uniform, consistent in color,
and free of defects, such as. peeling, cracks, and bubbles, etc.
6.2.2 The installation and pasting of signs shall be smooth, and shall not be scratched, warped,
or peeled off. The content on the signs shall be complete and the writing shall be clear and
correct.
6.3 Case
In addition to complying with the requirements of 5.1.1.1, the shut-off valves with nominal
dimensions greater than DN25 shall also adopt a metal case to protect the electromagnetic coil.
6.4 Strength of Pressure-bearing Parts
After being subjected to the test in accordance with the provisions of 7.4, the pressure-bearing
parts shall have no deformation, no cracks, and no visible leakage.
6.5 Air Tightness
Carry out the test in accordance with the method specified in 7.5, and one of the following
requirements must be satisfied.
a) When inspected with leak detection fluid or immersed in water, there shall be no
visible leaks;
b) When tested by the pressure drop method, the internal air tightness and external air
tightness leakage of the shut-off valve shall not exceed the provisions of Table 5.
7 Test Methods
7.1 Test Conditions
7.1.1 General atmospheric conditions
When there are no special requirements, the test shall be carried out under the following
atmospheric conditions.
a) Ambient temperature. 15 C ~ 35 C;
b) Relative humidity. 45% ~ 75%;
c) Atmospheric pressure. 86 kPa ~ 106 kPa.
7.1.2 Test media
7.1.2.1 Medium for strength test of pressure-bearing parts. non-corrosive liquid with a
temperature higher than 5 C and a viscosity not higher than water, dry air, or nitrogen.
7.1.2.2 Medium for air tightness test. dry air or nitrogen.
7.1.3 General provisions for test
7.1.3.1 During the test, the shut-off valve shall be installed or placed in the normal working
position.
7.1.3.2 Unless otherwise specified, knocking or vibration of the shut-off valve under test is not
allowed during the test.
7.1.3.3 The set values shall be corrected to the standard basal state.
7.1.4 Selection of instruments and devices for tests
7.1.4.1 The requirements for the selection of pressure gauges for the strength test of pressure-
bearing parts.
a) The measuring range of the pressure gauge shall be 1.5 ~ 3 times the test pressure;
b) The accuracy of the pressure gauge shall not be lower than Level 1.6.
7.1.4.2 The requirements for the selection of instruments and devices for the air tightness test.
a) The measuring range of the pressure gauge used for low-pressure internal air tightness
shall not be higher than 5 kPa, and the measuring range of other pressure gauges shall
be 1.5 ~ 3 times the test pressure;
b) The accuracy of the pressure gauge shall not be lower than Level 0.4;
7.5.1.1 The shut-off valve is in the open position, with both ends closed. The test pressure is 1.5
times the maximum working pressure.
7.5.1.2 When adopting leak detection fluid or water immersion for inspection, slowly apply
pressure to the shut-off valve to the specified test pressure, and the pressure holding time shall
not be lower than 3 minutes. Determine whether the test result complies with the provisions of
6.5 a).
7.5.1.3 When adopting the pressure drop method, slowly apply pressure to the shut-off valve to
the specified test pressure and maintain the pressure. Check the leakage of the shut-off valve
and determine whether the test result complies with the provisions of 6.5 b).
7.5.2 Internal air tightness
7.5.2.1 The shut-off valve is in the closed position, the air inlet end is closed, and the air outlet
end is open. The test pressure is 0.6 kPa and 1.5 times the maximum working pressure.
7.5.2.2 When adopting leak detection fluid or water immersion for inspection, slowly apply
pressure to the air inlet end of the shut-off valve to two specified test pressures. For the shut-
off valves with nominal dimensions less than DN50, the pressure holding time shall not be
lower than 1 minute. For the shut-off valves with nominal dimensions greater than or equal to
DN50, the pressure holding time shall not be lower than 3 minutes. Determine whether the test
result complies with the provisions of 6.5 a).
7.5.2.3 When adopting the pressure drop method, slowly apply pressure to the air inlet end of
the shut-off valve to two specified test pressures and maintain the pressure. Check the leakage
of the shut-off valve and determine whether the test result complies with the provisions of 6.5
b).
7.6 Rated Flow Test
7.6.1 Test device
As shown in Figure 2, connect the test device. The maximum error of the test instrument shall
not exceed 2%.
of 6.11.
7.12 Temperature Resistance and Damp Heat Resistance Test
7.12.1 High temperature (operation) resistance test
Place the shut-off valve that has completed the durability test in the test chamber, connect the
cable of the shut-off valve, adjust the temperature of the test chamber, and maintain it at 20 C
 5 C for 30 min  5 min. At a rate of 1 C/min, raise the temperature to 60 C  2 C, maintain
it for 16 hours, then, immediately carry out the test in accordance with 7.5 and 7.7.Take out the
shut-off valve and place it under normal atmospheric conditions for 1 h ~ 2 h. Visually inspect
the specimen for coating damage or corrosion and determine whether the test result complies
with the provisions of 6.12.1.
7.12.2 Low temperature (operation) resistance test
Place the shut-off valve that has completed the high temperature (operation) resistance test in
the test chamber, connect the cable of the shut-off valve, adjust the temperature of the test
chamber, and maintain it at 20 C  5 C for 30 min  5 min. At a rate of 1 C/min, lower the
temperature to 20 C  2 C (applicable to shut-off valves within the normal ambient
temperature range) or 40 C  2 C (applicable to shut-off valves within the low ambient
temperature range), maintain it for 16 hours, then, immediately carry out the test in accordance
with 7.5 and 7.7.Take out the shut-off valve and place it under normal atmospheric conditions
for 1 h ~ 2 h. Visually inspect the specimen for coating damage or corrosion and determine
whether the test result complies with the provisions of 6.12.2.
7.12.3 Constant heat and humidity (operation) resistance test
Place the shut-off valve that has completed the low temperature (operation) resistance test in
the test chamber, connect the cable of the shut-off valve, adjust the temperature of the test
chamber, and maintain it at 20 C  5 C for 30 min  5 min. At a rate of 1 C/min, raise the
temperature to 40 C ...