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GB 7512-2023: [Including 2026XG1] Valves for liquefied petroleum gas cylinders
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB 7512-2023	English	499	Add to Cart	4 days [Need to translate]	[Including 2026XG1] Valves for liquefied petroleum gas cylinders
GB/T 7512-2017	English	639	Add to Cart	4 days [Need to translate]	[Including 2022XG1] Valves for liquefied petroleum gas cylinders
GB 7512-2006	English	559	Add to Cart	3 days [Need to translate]	[GB/T 7512-2006] Valves for liquefied petroleum gas cylinders
GB 7512-1998	English	319	Add to Cart	3 days [Need to translate]	Valves for liquefied petroleum gas cylinders
GB 7512-1987	English	RFQ	ASK	3 days [Need to translate]	Valves for liquefied petroleum gas cylinders

GB 7512-2023: Valves for liquefied petroleum gas cylinders

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 23:020:30 CCSJ16 National Standards of People's Republic of China Replace GB/T 7512-2017 LPG cylinder valve Published on 2023-11-27 Implemented on 2023-12-01 State Administration for Market Regulation Released by the National Standardization Administration Committee

Table of contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Model Representation Method 2 5 Structural type and basic dimensions 2 6 Technical requirements 5 6:1 Material requirements 5 6:2 Processing requirements 6 6:3 Performance requirements 6 6:4 Minimum design service life 7 7 Inspection and test methods 8 7:1 General rules for testing 8 7:2 Mechanical property test and chemical composition analysis method of main parts materials 8 7:3 Non-metal seal material performance test 8 7:4 Appearance inspection 9 7:5 Basic dimensions and air inlet and outlet thread inspection 9 7:6 Weight Check 9 7:7 Opening and closing test 9 7:8 Air tightness test 9 7:9 Vibration resistance test 9 7:10 Temperature resistance test 9 7:11 Durability test 10 7:12 Valve body pressure resistance test 10 7:13 Valve body stress corrosion resistance test 10 7:14 Installation torque test 11 7:15 Handwheel fire resistance test 11 8 Inspection Rules 11 8:1 Material inspection11 8:2 Factory inspection 11 8:3 Type test 11 8:4 Inspection items 11 9 Marking, packaging, storage and transportation 12 9:1 Flag 12 9:2 Packaging13 9:3 Public website and factory documents13 9:4 Storage and transportation14 Appendix A (Normative) Requirements and test methods for information bottle valves and smart bottle valves 15 A:1 Technical requirements 15 A:2 Inspection and test methods 15 A:3 Inspection Rules 17 Reference 18

Foreword

This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document replaces GB/T 7512-2017 "Liquefied Petroleum Gas Cylinder Valve": Compared with GB/T 7512-2017, except for structural adjustment and editing In addition to sexual changes, the main technical changes are as follows: a) Added the terms and definitions of "overflow cut-off device, electronic reading mark, authorized filling device, information bottle valve, intelligent bottle valve" (see 3:2, 3:3, 3:4, 3:5, 3:6); b) Added the content of bottle valve sealing structure design requirements (see 5:2); c) The specification of the air inlet thread PZ19:2 has been deleted, and the plastic liner fiber fully wrapped cylinder valve air inlet thread M26×1:5 has been added: Specifications (see 5:4,:2017 version of 5:5); d) Added the requirement that the gas cylinder valve be equipped with an overflow shut-off device (see 5:7); e) For metal materials, the HPb59-2 grade content has been deleted (see 6:1:1:1 of the:2017 edition), and the chemical compositions of Cu, Pb, and Fe have been deleted: Content (see Table 3 of the:2017 version); f) Table 4 has been changed, PZ19:2 has been deleted from the air inlet thread, and the installation torque of M26×1:5 has been added (see Table 4,:2017 version of the table 4); g) The number of durability tests for self-closing devices has been changed to:2000 times (see 6:3:5:2,:2017 version of 6:3:5:2); h) Added requirements for automatic collection and recording of inspection data for air tightness tests (see 7:8:4); i) The requirements for product certificates have been changed, and the requirements for electronic reading marks of bottle valves have been added (see 9:1:3, 9:1:3 in the:2017 version); j) Added requirements for publicity website and factory documents (see 9:3); k) Added requirements for information bottle valves and smart bottle valves (see Appendix A): Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents: This document is proposed and managed by the State Administration for Market Regulation: The previous versions of this document and the documents it replaces are as follows: ---First published as GB 7512-1987 in 1987, revised for the first time in:1998, and revised for the second time in:2006; ---The third revision in:2017 is GB/T 7512-2017; ---This is the fourth revision: LPG cylinder valve

1 Scope

This document specifies the model representation method, structural type and basic dimensions, technical requirements, Inspection and test methods, inspection rules, marking, packaging, storage and transportation: This document is suitable for use in environments where the ambient temperature is -40 ℃ ~ 60 ℃, the nominal working pressure is not greater than 2:5MPa, and the medium complies with GB 11174, Liquefied petroleum gas cylinder valve with the center line of the air inlet and air outlet at 90°: This document does not apply to vehicle LPG cylinder valves:

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 197 Ordinary thread tolerances GB/T 228:1 Tensile test methods for metallic materials Part 1: Room temperature test methods GB/T 1184 Shape and position tolerances No tolerance value noted GB/T 1804 General tolerances Tolerances for linear and angular dimensions without tolerances noted GB/T 3934 Technical conditions for ordinary thread gauges GB/T 5121:1 Methods for chemical analysis of copper and copper alloys Part 1: Determination of copper content GB/T 5121:3 Methods for chemical analysis of copper and copper alloys Part 3: Determination of lead content GB/T 5121:9 Methods for chemical analysis of copper and copper alloys Part 9: Determination of iron content GB/T 5231 Processed copper and copper alloy grades and chemical composition GB/T 8335 Special thread for gas cylinders GB/T 8336 Special thread gauge for gas cylinders GB/T 10567:2 Residual Stress Testing Method for Copper and Copper Alloy Processed Materials Ammonia Fumigation Test Method GB/T 13005 Gas cylinder terminology GB/T 15382 General technical requirements for gas cylinder valves YS/T 482 Analysis methods for copper and copper alloys Spark discharge atomic emission spectrometry YS/T 483 Analysis method for copper and copper alloys X-ray fluorescence spectrometry (wavelength dispersion type)

3 Terms and definitions

The terms and definitions defined in GB/T 13005 and the following apply to this document: 3:1 theself-closingdevice Located in the air outlet of the bottle valve, it can automatically open the bottle valve after being connected to the inflation device (or pressure regulator): After removing the inflation device (or pressure regulator) A protection device that can automatically close the bottle valve: ...