CJ/T 217-2013 English PDF (CJ/T217-2013)

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CJ/T 217-2013: Compound quick air inbreathe-release valve for water supply pipeline
CJ/T 217-2013
Compound quick air inbreathe-release valve for water supply pipeline
ICS 91.140.01
P41
People's Republic of China urban construction industry standards
Replacing CJ/T 217-2005
Water supply pipe compound high-speed inlet and outlet valve
2013-04-27 released
2013-10-01 Implementation
Ministry of Housing and Urban-Rural Development, People's Republic of China released
Directory
Foreword Ⅲ
1 range 1
2 Normative references 1
3 Terms and definitions 1
4 structure type 2
5 Product Model 2
6 material 2
7 Requirements 3
8 Test Method 5
Inspection rules 6
10 logo, product manual 7
11 packaging, storage and transportation 7
Appendix A (informative) intake and exhaust valve basic structure type 8
Appendix B (informative) into the exhaust valve model compiled 10
Appendix C (Normative) Exhaust volume curve (without protective net) 11
Appendix D (informative) Displacement calculation method 12
Appendix E (informative) sealed test device 15
Appendix F (informative) performance test device 16
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is CJ/T 217-2005 "water supply pipe composite high-speed inlet valve" amendment. This standard and CJ/T 217-2005
Compared to the main technical changes are as follows.
--- Modify Chapter 1 of the nominal size, nominal pressure and water temperature range;
--- Modify the chapeau in Chapter 2, and the normative references made changes;
--- Increased floating body, floating body components, large into the vent, small vent terminology and definitions;
--- Modify the "inlet valve exhaust valve closing pressure" terms and definitions;
--- Remove the "requirements" chapter of the material part, the material part of a separate chapter;
--- Increased copper alloy body material;
--- Added carbon structural steel as a component material;
--- Increased the nominal size of Table 2 DN15 ~ DN50 displacement parameters;
--- Increased between the valve body and the valve into the exhaust passage should be fitted outside the protective cover requirements;
--- Added the original table 4 "test and test items" in the test items, and revised as Table 3 "test items";
--- Modify the sample test form, deleted the original table 3 "sample of the factory test sample";
--- Modify the overall structure of the intake and exhaust valve structure Figure 1 is Figure A.1a), the structure removed from the text and incorporated into Appendix A;
--- Added Appendix A "threaded connection to the exhaust valve" basic structure type Figure A.1c);
--- Increase the original Appendix A Figure A.1 intake and exhaust curve specifications and appendix A to Appendix C;
--- Delete the original Appendix C, and Appendix C of the original Annex C Appendix C;
--- Removed the original Chapter 9 "Test Report" section;
--- Delete the original Appendix E "Test Report", the original Appendix D to Appendix E;
--- Modify Chapter 5 "Product Model" in the content, and 5.1, 5.2 incorporated in Appendix B;
--- Removed the original Appendix B B.1 "Determination of displacement by the law of conservation of mass calculated", the original B.2 "measured by the orifice displacement
Counting "Appendix D, and increased import exhaust valve inlet pressure and outlet pressure differential pressure equation.
This standard reference ANSI/AWWAC512-2004 "automatic exhaust valve for water supply system, air valve/vacuum valve and composite exhaust
Valve "preparation.
This standard proposed by the Ministry of Housing and Urban Standard and Design Institute.
This standard by the Ministry of Housing and Urban Water Supply and Drainage Municipal Standardization Technical Committee centralized.
This standard was drafted. Guangdong Yongquan Valve Technology Co., Ltd., Guangdong Cast Tak Industrial Co., Ltd., Beijing Yongquan Tengda valve technology
Limited company.
The main drafters of this standard. Chen Jianming, Liang Jianlin, Cheng Yuanjun, Wu Bomin, Pan Qingxiang, Chen Yanming.
This standard replaces the standards previously issued as follows.
--- CJ/T 217-2005.
Water supply pipe compound high-speed inlet and outlet valve
1 Scope
This standard specifies the terms and definitions of the composite high-speed inlet and outlet valve (hereinafter referred to as the inlet valve) of the water supply pipeline, structure type, product type
Number, material, requirements, test methods, inspection rules, signs, product manuals and packaging, storage and transportation.
This standard applies to the nominal size DN15 ~ DN300 on the water supply pipe, the nominal pressure is not greater than PN25, water temperature 0 ℃ ~ 40 ℃
Intake and exhaust valve.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 196 ordinary thread basic size
GB/T 197 ordinary thread tolerances
GB/T 700 carbon structural steel
GB/T 1047 pipe element DN (nominal size) of the definition and selection
GB/T 1048 pipe element PN (nominal pressure) definition and selection
GB/T 3098 (all parts) Fastener mechanical properties
GB/T 3280 stainless steel cold-rolled steel sheet and strip
Paints and varnishes - Determination of paint film hardness by pencil method GB/T 6739-2006
GB/T 7306.2 55 ° sealing pipe threads - Part 2. Female and female conical taper threads
Steel surface rust grade and derusting grade before painting GB/T 8923-2008
Tests for crosshatch of paints and varnishes - GB/T 9286-1998
GB/T 9969 Industrial Products Manual General
GB/T 12220 common valve logo
GB/T 12225 common valve copper alloy castings technical conditions
GB/T 12227 General valve ductile iron specifications
GB/T 13927 industrial valve pressure test
GB/T 17241.6 overall cast iron pipe flange
GB/T 17241.7 cast iron pipe flanges technical conditions
GB/T 21873 rubber seal to the drain pipe and sewer pipe interface seal material specifications
JB/T 308 valve model preparation methods
JB/T 7928 general valve supply requirements
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
With large and small into the vent, with the pipe when the water can be quickly discharged, the pipeline can produce rapid vacuum when the negative pressure in the normal working