CJ 274-2008 English PDF
Basic dataStandard ID: CJ 274-2008 (CJ274-2008)Description (Translated English): City gas pressure regulators Sector / Industry: Urban Construction Industry Standard Classification of Chinese Standard: P47 Classification of International Standard: 91.140 Word Count Estimation: 35,331 Date of Issue: 2008-02-29 Date of Implementation: 2008-08-01 Quoted Standard: Ministry of Construction Bulletin No. 816 Adopted Standard: EN 334-2005, NEQ Regulation (derived from): Ministry of Construction Bulletin No. 816 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China Summary: This standard specifies the town gas (artificial gas, natural gas, liquefied petroleum gas and liquefied petroleum gas -air mixture, etc., the same below) transmission and distribution systems using gas regulator (hereinafter referred to as the regulator) terms, definitions and symbols, classification and marking, structure and materials, technical requirements, test methods, inspection rules, marking, labeling, instructions and packaging, transportation, storage. This standard applies to the inlet pressure is less than 4. 0MPa, working temperature range does not exceed -20��C -60��C dew point temperature not lower than the gas, the nominal size of not more than 300mm of adjustment after piped gas pressure regulator. This standard does not apply to bottled liquefied petroleum gas regulator and regulator used. Where this criterion mentioned or indicated pressure values ??are to gauge the value of the unit is Mpa. CJ 274-2008: City gas pressure regulators---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.City gas pressure regulators ICS 91.140 P47 People's Republic of China urban construction industry standards Town gas regulator 2008-02-29 released 2008-08-01 implementation Ministry of Construction of People's Republic of China released Directory Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms, definitions and symbols 2 4 classification and marking 8 5 Structure and Materials 9 6 Technical Requirements 12 7 Test Methods 15 8 Inspection rules 23 9 signs, labels, user manual 24 10 packaging, transportation, storage 25 Appendix A (Normative) Rubber material physical and mechanical properties 26 Appendix B (informative) regulator rubber parts life 27 Appendix C (Normative) Flow Characteristics 28 Appendix D (Informative) Large flow rate regulator flow coefficient of alternative methods ForewordThis standard 6.2, 6.3.4, 6.3.5, 6.7, 6.8.1 is a mandatory clause, the rest are recommended terms. This standard is GB 16802-1997 "town gas regulator" amendment. This standard in the development process mainly refers to the European standard Quasi EN334..2005 "the maximum inlet pressure to 10MPa gas regulator", the standard of EN334 and the degree of non-equivalent. 1 The main difference between this standard and GB 16802 a) In the range, the maximum inlet pressure will be increased from 1.6MPa to 4.0MPa; the working temperature range from -20 ℃ ~ 50 ℃ to -20 ℃ ~ 60 ℃; b) GB 16802 specifies the inlet pressure range, outlet pressure range, regulator accuracy and shut-off pressure for each regulator. This standard Quasi regulation of a number of voltage regulation accuracy, the closure of the pressure level and the level of pressure off the area for the choice, while the provisions of the production unit will The pressure regulation level, the closed pressure level and the closed pressure zone shall be clearly indicated under the range of inlet pressure and outlet pressure. c) This standard puts special emphasis on the plasticity and toughness requirements of metal materials, put forward the elongation and impact energy indicators, and provides a variety of gold Is a pressure-relief material in the pressure regulator grade and nominal size and other aspects of the scope of application; d) GB 16802 requirements diaphragm can withstand 0.1MPa pressure and -30 ℃ low temperature test; this standard diaphragm can withstand Design pressure of 1.15 times the pressure and -20 ℃ low temperature test; e) In the static characteristics of the regulator test, GB 16802 provides only for a cluster of static characteristics of the outlet pressure set point is rated Mouth pressure; This standard for the three clusters of static characteristics of the outlet pressure set point for the export pressure within the scope of the three provisions; f) This standard adds the flow coefficient Cg as a basis for judging the flow regulator capacity, and the use of the sine method of determination test. 2 The main difference between this standard and EN334 a) EN334 applies to the maximum inlet pressure is not greater than 10MPa and nominal size is not greater than DN400 gas regulator; This standard For the maximum inlet pressure is not greater than 4.0MPa and nominal size is not greater than DN300 gas regulator. b) EN334 stipulates that the minimum temperature of -10 ℃ and -20 ℃, the production of steel pressure parts should meet the requirements of impact energy; The standard stipulates that carbon steel and low alloy steel used for pressure-bearing parts should have a minimum temperature of -20 ° C and a design pressure of the pressure regulator of equal to or more than 2.5MPa should meet the requirements of impact work, and to allow limited use of gray cast iron as a pressure member. c) For the inner seal of the factory test, EN334 provides that the test is carried out under 1.1 times the design pressure of the pressure regulator and the pressure regulator Off 5s and 30s measured when the two closing pressure should be equal; This standard specifies the maximum inlet pressure test, And the two shut-off pressures measured when the regulator is off for 2 minutes and 10 minutes should be equal. For the type test of the secret Sealed, EN334 provides for 1.1 times the design pressure regulator test; This standard specifies the maximum inlet pressure Run the test, and the two shut-off pressures measured at 5 min and 30 min after the regulator has been switched off should be equal. d) For the static characteristics of the type test, EN334 stipulates that the static characteristics of each inlet pressure should be tested to their respective inlet pressure Large flow; This standard provides that if the test bed flow enough, then the static characteristics of the inlet pressure should be tested to their respective import pressure The maximum flow force, such as test bed flow enough, then at least to meet the minimum inlet pressure maximum flow. e) EN334 does not provide durability test; this standard requires the durability test. This standard Appendix A and Appendix C normative appendix, Appendix B and Appendix D is an informative annex. This standard is proposed by the Ministry of Construction standard quota research institute. This standard by the Ministry of Construction town gas standard technology focal point China Municipal Engineering North China Design and Research Center. This standard was drafted. North China Municipal Engineering Design and Research Institute, Shanghai Feiao Gas Equipment Co., Ltd., the quality of national gas appliances Supervision and Inspection Center, Beijing Yanshan Industrial Gas Equipment Co., Ltd., Hefei long ring to the drainage gas equipment Co., Ltd., Fisher Jiu'an Transmission and distribution equipment (Chengdu) Co., Ltd., Changzhou letter of gas equipment Co., Ltd., Zhejiang Qinghui Intelligent Control Co., Ltd., Shanghai Tianxin instrument Table Co., Ltd., Beijing Xin Guang Jin Gas Equipment Research Institute, Leshan Chuantian Gas Transmission and Distribution Equipment Co., Ltd., Chengdu Huatai Gas Equipment Co., Ltd. Division, Kelaideside (Beijing) Gas Equipment Co., Ltd., Tianjin Branch of the new instrument sets, Dafeng City Gas Equipment Co., Ltd., into All Jason Transmission Equipment Industrial Co., Ltd. The main drafters of this standard. Wang Qi, Pan Liang, Zhai Jun, Chen Wenliu, Chang Bao Cheng, Qiu Min, Zheng, Chen mirror rabbit, Qiu Liang, Li Song, Zhang Jianming, Qiao Bin, Sun Jianxun, Zhiheng Qin, Liu Jie. This standard replaces the standards previously issued as follows. --- GB 16802-1997. Town gas regulator1 ScopeThis standard specifies the town gas (artificial gas, natural gas, liquefied petroleum gas and liquefied petroleum gas - air mixture, the same below) transmission and distribution System used gas regulator (hereinafter referred to as regulator) terms, definitions and symbols, classification and marking, structure and materials, technical requirements, test Methods, inspection rules, signs, labels, instructions for use and packaging, transportation, storage. This standard applies to the inlet pressure is not greater than 4.0MPa, the operating temperature range does not exceed -20 ℃ ~ 60 ℃ and not lower than the gas dew point temperature Degree, the nominal size of not more than 300mm regulator gas pipe pressure regulator. This standard does not apply to regulators and bottled liquefied petroleum gas regulator. Where the pressure is not mentioned in this standard are referred to the gauge pressure value, in units of MPa.2 Normative referencesThe terms in the following documents become the subject of this standard by reference to this standard. For dated references, all subsequent ones Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to reach an agreement in accordance with this standard research is No The latest versions of these files are available. For undated references, the latest version applies to this standard. GB/T 191 Packaging - Pictorial signs GB/T 229 Charpy pendulum impact test method for metallic materials GB/T 699 high-quality carbon structural steel GB/T 1039 Plastics - General mechanical properties test methods GB 1220 stainless steel rod GB/T 1239.2 cold rolled cylindrical helical compression spring technical conditions GB/T 1239.4 hot coil cylindrical spring conditions GB/T 1348 ductile iron parts GB/T 1527 copper and copper alloy drawn pipe GB/T 1591 low-alloy high-strength structural steel GB/T 1690 vulcanized rubber or thermoplastic rubber liquid test methods GB/T 3452.1 hydraulic pneumatic O-ring with rubber seals - Part 1. Dimensions and tolerances GB/T 3452.2 O-ring for hydraulic pneumatic seals - Part 2. Appearance quality inspection standards GB/T 6388 transport packaging shipping symbols GB/T 7306.1 55 ° sealing pipe threads - Part 1. Cylindrical and tapered male thread GB/T 7306.2 55 ° sealing pipe threads - Part 2. Female and female conical taper threads GB/T 9112 steel pipe flange type and parameters GB/T 9969.1 Industrial Products Manual General GB/T 12226 General valve gray cast iron technical conditions GB/T 12227 General valve ductile iron specifications GB/T 12229 common valve carbon steel castings technical conditions GB/T 13306 signs GB/T 13384 mechanical and electrical product packaging General technical conditions GB/T 14976 stainless steel seamless pipe for fluid transport HG2807 town gas regulator with rubber diaphragm ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of CJ 274-2008_English be delivered?Answer: Upon your order, we will start to translate CJ 274-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically in 9 seconds (download/delivered in 9 seconds). The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of CJ 274-2008_English with my colleagues?Answer: Yes. 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