JB/T 12621-2016Valves for liquefied natural gas - Technical requirements (English PDF)
液化天然气阀门 技术条件
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
January 15, 2016
Implementation date
June 1, 2016
Scope
JB/T 12621-2016 is the English-translated version of 液化天然气阀门 技术条件.
JB/T 12621-2016 is a recommended standard of the Chinese machinery industry setting the technical requirements for liquefied natural gas valves.
It gives the terms and definitions for LNG gate valves, globe valves, check valves, ball valves and butterfly valves, then the technical requirements, the inspection and test methods, the inspection rules and the provisions for marking, painting, packaging, transport and storage.
It applies to flanged and welded valves whose working medium is liquefied natural gas, of nominal pressure PN16 to PN250 and nominal size DN15 to DN1200, or pressure class Class 150 to Class 1500 and nominal size NPS 1/2 to NPS 48; other low-temperature valves may also be handled by reference to it.
Among the standards it quotes are GB/T 3098.6, GB/T 12220, GB/T 12234, GB/T 12235, GB/T 21387, GB/T 26481-2010, GB 26640 and HG/T 20615. Its classifications are J16 and 23.060.01.
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Document preview — JB/T 12621-2016
National Standard of the People's Republic of China
- ICS
- 23.060.01
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Technical requirements
- 4.1 General
- 4.2 General requirements
- 4.3 Performance
- 4.4 Structure of the valve
- 4.5 Valve body
- 4.6 Bonnet
- 4.7 Stem
- 4.8 Sealing pair
- 4.9 Packing
- 4.10 Stuffing box
- 4.11 Middle flange seal
- 4.12 Cryogenic treatment
- 4.13 Driving device and operation
- 4.14 Cleaning treatment
- 4.15 Materials
- 4.16 Appearance quality of the steel castings
- 4.17 Treatment of the defects
- 4.18 Non-destructive testing
- 5 Inspection and test methods
- 5.1 Inspection of the marking
- 5.2 Appearance quality of the steel castings
- 5.3 Dimensional inspection
- 5.4 Analysis of the chemical composition
- 5.5 Mechanical property test
- 5.6 Non-destructive testing
- 5.7 Performance test at ambient temperature
- 5.8 Performance test at low temperature
- 5.9 Low temperature cycling life test
- 5.10 Fugitive emission test
- 5.11 Antistatic test
- 5.12 Fire resistance test
- 6 Inspection rules
- 6.1 Inspection items
What this standard covers
This standard specifies the terms and definitions of liquefied natural gas gate valves, globe valves, check valves, ball valves and butterfly valves. Technical requirements, inspection, test methods, inspection rules, marking, painting, packaging, transportation and storage. This standard applies to the nominal pressure PN16 ~ PN250, nominal size DN15 ~ DN1 200 and pressure class class150 ~ class1500, nominal size NPS1/2 ~ NPS48, the working medium is liquefied natural gas flange and welded connection valve (hereinafter referred to as valve). Other temperatures higher than -162°C low temperature valve can also refer to the use.
Document data
International classification (ICS): 23.060.01.
Chinese classification (CCS): J16.
Estimated length of the Chinese original: 14,162 words.
Standards quoted by this document
GB/T 229; GB/T 3098.6; GB/T 3098.15; GB/T 12220; GB/T 12221; GB/T 12222; GB/T 12223; GB/T 12224; GB/T 12234; GB/T 12235; GB/T 12236; GB/T 12237; GB/T 13402; GB/T 20368; GB/T 21387; GB/T 26479; GB/T 26480; GB/T 26481-2010; GB 26640; GB/T 28776; HG/T 20615
3 Terms and definitions
4 Technical requirements
5 Inspection and test methods
6 Inspection rules
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 229Metallic Materials — Charpy Pendulum Impact Test Method
- GB/T 3098.6Mechanical properties of fasteners - Stainless steel bolts, screws and studs
- GB/T 3098.15Mechanical properties of fasteners - Stainless steel nuts
- GB/T 12220Industrial valves -- Marking
- GB/T 12221Metal valves - Face to face;end to end;center to face and center to end dimensions
- GB/T 12222Multi-turn valve actuator attachments
Similar standards
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Related Standards
GB 26640-2011 — [GB/T 26640-2011] Specification for minimal thickness of the shell of valves
GB/T 12220-2015 — Industrial valves -- Marking
GB/T 12221-2005 — Metal valves -- Face to face, end to end, center to face and center to end dimensions
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JB/T 12621-2016
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