CJ/T 255-2007
Non-slam nozzle check valve (English Version)

Standard No.

CJ/T 255-2007

Language

Chinese, Available in English version

Release Date

2007

Published By

Professional Standard - Urban Construction

Latest

CJ/T 255-2007

Scope

This standard specifies the basic requirements for the terms and definitions, structural types, product models, requirements, inspection and test methods, inspection rules, signs, product instructions, packaging, storage and transportation of diversion quick-closing check valves. This standard is applicable to diversion quick-closing check valves for pipelines with nominal diameters of DN25mm to DN800mm, nominal pressures less than or equal to PN2.5MPa, medium temperatures less than or equal to 65°C, and mediums that are clean water or have physical and chemical properties similar to water.

CJ/T 255-2007 Referenced Document

• GB/T 1047 Pipework components—Definition and selection of nominal size*， 2019-03-25 Update
• GB/T 1048 Pipework components—Definition and selection of nominal pressure*， 2019-05-10 Update
• GB/T 12220 Industrial valves.Marking*， 2015-05-15 Update
• GB/T 12225 General purpose industrial valves.Specification of copper alloy castings*， 2018-05-14 Update
• GB/T 12226 General purpose industrial valves.Specification of flake graphite iron castings
• GB/T 12227 General purpose industrial valves.Specification of spheroidal graphite iron castings
• GB/T 1239.6-1992 Design of helical springs
• GB/T 13927 Industrial valves—Pressure testing*， 2022-12-30 Update
• GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system
• GB/T 17241.6 Integral cast iron flanges *， 2008-08-25 Update
• GB/T 17241.7 Specifications for cast iron pipe flanges
• GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications
• GB/T 3098.1 Mechanical properties of fasteners.Blots, screws and studs*， 2011-01-10 Update
• GB/T 3098.10 Mechanical properties of fasteners Bolts, scrows, studs and nuts made of non-ferrous metals
• GB/T 3098.11 Mechanical properties of fasteners--Drilling screws with tapping screw thread
• GB/T 3098.12 Mechanical properties of fasteners--Cone proof load test on nuts
• GB/T 3098.13 Mechanical properties of fasteners--Torsional test and minimum torques for bolts and screws with nominal diameters 1mm to 10mm
• GB/T 3098.14 Mechanical properties of fasteners-Widening test on nuts
• GB/T 3098.15 Mechanical properties of fasteners—Stainless steel nuts*， 2023-05-23 Update
• GB/T 3098.16 Mechanical properties of fasteners.Stainless steel set screws*， 2014-06-24 Update
• GB/T 3098.17 Mechanical Properties of fasteners-Preloading test for the detection of hydrogen embrittlement-Parallel bearing surface method
• GB/T 3098.18 Mechanical properties of fasteners--Blind rivets testing
• GB/T 3098.19 Mechanical properties of fasteners-Blind rivets with break pull mandrel
• GB/T 3098.2 Mechanical properties of fasteners.Nuts*， 2015-12-10 Update
• GB/T 3098.20 Mechanical properties of fasteners-Wing nuts with specified proof torque
• GB/T 3098.21 Mechanical properties of fasteners.Stainless steel tapping screws*， 2014-06-24 Update
• GB/T 3098.22 Mechanical properties of fasteners made of the fine grain non-heat treatment steel.Bolts,screws and studs*， 2009-10-15 Update
• GB/T 3098.23 Mechanical properties of fasteners—M42～M72 bolts, screws and studs*， 2020-03-31 Update
• GB/T 3098.24 Mechanical properties of fasteners—Stainless steel and nickel alloys bolts, screws, studs and nuts for high temperature applications*， 2020-11-19 Update
• GB/T 3098.25 Mechanical properties of fasteners—Guidance for the selection of stainless steels and nickel alloys for fasteners*， 2020-11-19 Update
• GB/T 3098.26 Mechanical properties of fasteners—Flat washers*， 2021-12-31 Update
• GB/T 3098.3 Mechanical properties of fasteners.Set screws*， 2016-02-24 Update
• GB/T 3098.4 Mechanical properties of fasteners-Nuts-Fine pitch thread
• GB/T 3098.5 Mechanical properties of fasteners.Tapping screws*， 2016-02-24 Update
• GB/T 3098.6 Mechanical properties of fasteners—Stainless steel bolts，screws and studs*， 2023-05-23 Update
• GB/T 3098.7 Mechanical properties of fasteners-Thread rolling screws
• GB/T 3098.8 Mechanical properties of fasteners.Parts for bolted connections for use at temperatures from -200℃～+700℃*， 2011-01-10 Update
• GB/T 3098.9 Mechanical properties of fasteners—Prevailing torque type steel nuts*， 2020-03-31 Update
• GB/T 3280 Cold rolled stainless steel plate, sheet and strip*， 2015-09-11 Update
• GB/T 6739-2006 Paints and varnishes-Determination of film hardness by pencil test
• GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads Part 2:Taper internal and external threads
• GB/T 8923-1988 Rust grades and preparation grades of steel surfaces before application of paints and related products
• GB/T 9286-1998 Paints and varnishes--Cross cut test for films
• HG/T 3091 Rubber seals.Joint rings for water supply,drainage and sewerage pipelines.Specification for materials
• JB/T 308 Valves model designation method
• JB/T 7928 Industrial valves.Delivery specification*， 2014-07-09 Update
• JB/T 90 Spiral wound gaskets for pipe flanges*， 2015-10-10 Update

CJ/T 255-2007 history

• 2007 CJ/T 255-2007 Non-slam nozzle check valve