CJ/T 344-2010Backflow freventer with intermediate atmospheric vent (English PDF)
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Issued by
Ministry of Housing and Urban-Rural Development of the People's Republic of China
Level / Type
National · Recommended
Issue date
August 3, 2010
Implementation date
January 1, 2011
Scope
CJ/T 344-2010 (Backflow freventer with intermediate atmospheric vent) is available as an English-translated PDF.
CJ/T 344-2010 — This standard specifies the intermediate cavity air blocking backflow preventer structure type and parameters, requirements, performance requirements, test methods, test rules Then, logo, packaging and storage.
This standard applies to the nominal pressure of PN1.0MPa ~ 1.6MPa, the nominal size of DN15mm ~ DN300mm intermediate cavity Air blocking backflow preventer.
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Document preview — CJ/T 344-2010
National Standard of the People's Republic of China
- ICS
- 23.060.99
- Classification
- J 16
Issued by: Ministry of Housing and Urban-Rural Development of the People's Republic of China
Contents
- What this standard covers1
- Document data2
- Standards quoted by this document3
What this standard covers
This standard specifies the intermediate chamber air partition type backflow prevention device structure type and parameters, requirements, performance requirements, test methods, inspection rules, marking, packaging and storage. This standard applies to nominal pressure of PN 1. 0MPa ~ 1. 6MPa, nominal size DN15 mm ~ DN300mm intermediate chamber air partition type backflow prevention device.
Document data
International classification (ICS): 23.060.99.
Chinese classification (CCS): J16.
Estimated length of the Chinese original: 12,110 words.
Standards quoted by this document
GB/T 1047; GB/T 1048; GB/T 7307-2001; GB/T 8464; GB/T 9113.1; GB/T 9124; GB/T 12220; GB/T 12225; GB/T 12226; GB/T 12227; GB/T 12229; GB/T 12230; GB/T 13927; GB/T 13932; GB/T 15117; GB/T 17219; GB/T 17241.6; GB/T 17241.7; JB/T 308; JB/T 5300; JB/T 7748; JB/T 7927; JB/T 7928; JB/T 8937
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 8 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 1047Pipework components - Definition and selection of nominal size
- GB/T 1048Pipework components - Definition and selection of nominal pressure
- GB/T 7307-2001Pipe threads with 55-degree thread angle where pressure-tight joints are not made on the threads
- GB/T 8464Cast iron, copper and stainless steel valves with screwed connections
- GB/T 9113.1Integral steel pipe flanges
- GB/T 12220Industrial valves -- Marking
GB/T 9124 · GB/T 15117 · GB/T 17241.7
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