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GB/T 15558.4-2023Buried polyethylene(PE) piping systems for the supply of gaseous fuels - Part 4: Valves (English PDF)

燃气用埋地聚乙烯（PE）管道系统第4部分：阀门

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

November 27, 2023

Implementation date

June 1, 2024

Scope

GB/T 15558.4-2023 is the English-translated version of 燃气用埋地聚乙烯（PE）管道系统第4部分：阀门.

GB/T 15558.4-2023 is the Chinese standard "Buried polyethylene(PE) piping systems for the supply of gaseous fuels - Part 4: Valves".

Its scope clause reads: This document specifies the materials, product classification, specifications, dimensions, deviations and physical properties of underground polyethylene valves for gas use (hereinafter referred to as "valve"): Mechanical properties, inspection rules, markings, technical documents and packaging, transportation and storage requirements describe the corresponding test methods: This document, together with other parts of GB/T 15558, is applicable to operating temperatures of -20°C~40°C and maximum operating pressure (MOP) Buried polyethylene pipeline system for gas not exceeding 1:0MPa: This document is applicable to gas buried ground with a nominal outer diameter dn of 16mm~400mm made of PE100 or PE80 grade compounds: Polyethylene valve: Note 1: When transporting artificial coal gas and liquefied petroleum gas, it is necessary to consider the impact of other components (such as aromatic hydrocarbons and condensate) present in the gas on the valve performance at a certain concentration: adverse effects on performance: Note 2: The maximum working pressure of the pipeline system is related to the working temperature and the material's rapid crack propagation resistance (RCP) critical pressure, see GB/T 15558:1-2023 Appendix C: The reference operating temperature is 20°C: Note 3: Relevant parties have the responsibility to appropriately select the products specified in GB/T 15558 (all parts) based on specific application needs and in combination with relevant laws, standards and specification requirements: product:. Its clauses include normative reference documents.

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Document preview — GB/T 15558.4-2023

National Standard of the People's Republic of China

ICS: 83.140.30
Classification: G 33
Replacing: GB/T 15558.3-2008

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviations
4 Materials
5 Product Categories
6 Requirements
7 Test methods
8 Inspection Rules
9 flag
10 Technical Documents
11 Packaging, transportation and storage
Appendix A (informative) This document is compared with ISO 4437-4:2022 structure number comparison list
Appendix B (informative) Technical differences between this document and ISO 4437-4:2022 and their reasons
Appendix C (Normative) Sealing test (inner seal and outer seal) test method
Appendix D (normative) Operating torque test method
Appendix E (Normative) Bending resistance test method
Appendix F (normative) Temperature cycle resistance test method
Appendix G (normative) Sealing test method after temperature cycle under bending conditions
Appendix H (Normative) Operating torque and sealing test methods after tensile loading
Appendix I (Normative) Sealing performance of opening and closing device after bearing bending load
Appendix J (normative) Valve integrity test method after impact

1 Scope

This document specifies the materials, product classification, specifications, dimensions, deviations and physical properties of underground polyethylene valves for gas use (hereinafter referred to as "valve"):

Mechanical properties, inspection rules, markings, technical documents and packaging, transportation and storage requirements describe the corresponding test methods:

This document, together with other parts of GB/T 15558, is applicable to operating temperatures of -20°C~40°C and maximum operating pressure (MOP)

Buried polyethylene pipeline system for gas not exceeding 1:0MPa:

This document is applicable to gas buried ground with a nominal outer diameter dn of 16mm~400mm made of PE100 or PE80 grade compounds:

Polyethylene valve:

Note 1: When transporting artificial coal gas and liquefied petroleum gas, it is necessary to consider the impact of other components (such as aromatic hydrocarbons and condensate) present in the gas on the valve performance at a certain concentration:

adverse effects on performance:

Note 2: The maximum working pressure of the pipeline system is related to the working temperature and the material's rapid crack propagation resistance (RCP) critical pressure, see GB/T 15558:1-2023

Appendix C: The reference operating temperature is 20°C:

Note 3: Relevant parties have the responsibility to appropriately select the products specified in GB/T 15558 (all parts) based on specific application needs and in combination with relevant laws, standards and specification requirements:

product:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations

For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document:

GB/T 2828:1 Enumeration sampling inspection procedures Part 1: Batch-by-batch inspection sampling plan retrieved by acceptance quality limit (AQL) (GB/T 2828:1-2012,ISO 2859-1:1999,IDT)

GB/T 2918 Standard environment for conditioning and testing of plastic specimens (GB/T 2918-2018, ISO 291:2008, MOD)

GB/T 3682:1 Measurement of melt mass flow rate (MFR) and melt volume flow rate (MVR) of plastic thermoplastics

Part 1: Standard method (GB/T 3682:1-2018, ISO 1133-1:2011, MOD)

GB/T 6111 Determination of internal pressure resistance of thermoplastic piping systems for fluid transportation (GB/T 6111-2018,

ISO 1167-1:2006, ISO 1167-2:2006, ISO 1167-3:2007, ISO 1167-4:2007, NEQ)

GB/T 8806 Determination of dimensions of plastic components of plastic piping systems (GB/T 8806-2008, ISO 3126:2005, IDT)

GB/T 9345:1 Determination of ash content of plastics Part 1: General method (GB/T 9345:1-2008, ISO 3451-1:

1997,IDT)

GB/T 13021 Determination of carbon black content in polyolefin pipes and fittings Calcination and pyrolysis method (GB/T 13021-2023,

ISO 6964:2019,IDT)

GB/T 15558:1-2023 Buried polyethylene (PE) piping system for gas use Part 1: General principles (ISO 4437-1:2014,

MOD)

GB/T 15558:2-2023 Buried polyethylene (PE) piping systems for gas use Part 2: Pipes (ISO 4437-2:2014,

MOD)

GB/T 15558:3-2023 Buried gas polyethylene (PE) piping systems Part 3: Pipe fittings (ISO 4437-3:2014,

GB/T 15558.1 | GB/T 18742.1 | GB/T 15560 | GB/T 17643 | GB/T 15558.5 | GB/T 15558.3 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 38 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

GB/T 15558.5-2023Buried polyethylene(PE) piping systems for the supply of gaseous fuels - Part 5: Fitness for purpose of the system

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