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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 26481-2022: Industrial valves test for fugitive emissions Status: Valid GB/T 26481: Historical versions
Basic dataStandard ID: GB/T 26481-2022 (GB/T26481-2022)Description (Translated English): Industrial valves test for fugitive emissions Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J16 Classification of International Standard: 23.060.01 Word Count Estimation: 6,656 Date of Issue: 2022-12-30 Date of Implementation: 2023-07-01 Older Standard (superseded by this standard): GB/T 26481-2011 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 26481-2022: Industrial valves test for fugitive emissions---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.ICS 23.060.01 CCSJ16 National Standards of People's Republic of China Replacing GB/T 26481-2011 Fugitive test of industrial valves (ISO 15848-2.2015, Industrial valves-Measurement, test and qualification valves, MOD) Posted on 2022-12-30 2023-07-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee table of contentsPreface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Preparation of test valve 1 4.1 Number of test valves1 4.2 Conditions for test valves 1 4.3 Adjustment of valve stem (shaft) seal 1 5 Test conditions 1 5.1 Test medium 1 5.2 Leak measurement 2 5.3 Test pressure 2 5.4 Test temperature 2 6 Evaluation of test procedures and test results 2 6.1 Stem (shaft) leakage measurement 2 6.2 Leakage measurement at valve body connection 2 7 signs 2 8 Certificate of conformity for valves3forewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. This document replaces GB/T 26481-2011 "Valve Emission Test". Compared with GB/T 26481-2011, except for structural adjustment and Apart from editorial changes, the main technical changes are as follows. a) Changed the scope requirements (see Chapter 1, Chapter 1 of the.2011 edition); b) Added the terms and definitions of "product acceptance test" (see Chapter 3, Chapter 3 of the.2011 edition); c) Delete the inspection requirements (see Chapter 4 of the.2011 edition); d) Changed the requirements for leakage level C at the valve stem seal, from "1000ppmv" to "200ppmv" (see Table 1,.2011 edition table1); e) Delete the retest requirement (see 7.2 of the.2011 edition); f) Deleted Appendix A "Leakage measurement method using the suction method" (see Appendix A of the.2011 edition). This document is modified to adopt ISO 15848-2.2015 "Measurement, Test and Appraisal Procedures for Fugitive Medium Leakage of Industrial Valves Part 2" Part. Valve Product Acceptance Test". The technical differences between this document and ISO 15848-2.2015 and their reasons are as follows. a) Changed the scope requirements (see Chapter 1) to meet the needs of our country in practical applications; b) Replaced ISO 15848-1.2015 (see Chapter 3~Chapter 6) with the normative reference GB/T 40079-2021, the two documents The degree of consistency between the files is modified to meet the application needs of our country; c) It is added that the valve stem (shaft) seal is not allowed to be adjusted after the start of the test (see 4.3), so as to meet the actual needs of product inspection in my country; d) Delete the requirements for judging the sealing level of the valve stem (shaft) seal (see 6.1 of ISO 15848-2.2015), which is consistent with the requirements in Table 1 repeat. The following editorial changes have been made to this document. ---Change the name of the document to "Fugitive Test of Industrial Valves". Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Valve Standardization Technical Committee (SAC/TC188). This document is drafted by. Hefei General Machinery Research Institute Co., Ltd., Hefei General Mechanical and Electrical Products Testing Institute Co., Ltd., Chengdu Chenggao Valve Door Co., Ltd., Baoyi Group Co., Ltd., Jiangsu Suyan Valve Machinery Co., Ltd., Zhejiang Bethel Technology Co., Ltd., Suzhou Ante Weidu Valve Co., Ltd., Shenjiang Valve Co., Ltd., Yuanda Valve Group Co., Ltd., Fangzheng Valve Group Co., Ltd., Weiduli Valve Co., Ltd., Chaoda Valve Group Co., Ltd., Chongqing Chuanyi Control Valve Co., Ltd., Zhejiang Linuo Fluid Control Technology Co., Ltd. Division, Shanghai Yahe Valve Industry Complete Co., Ltd., Jinggong Valve Group Co., Ltd., Sichuan Jingkong Valve Manufacturing Co., Ltd., Kaiximu Valve Co., Ltd. Company, Ningbo Jack Dragon Seiko Co., Ltd., Shenzhen Institute of Quality and Safety Inspection and Testing, Stunt Valve Group Co., Ltd., Guogong Holding Group Group Co., Ltd., Wenzhou System Process Equipment Science Research Institute, Wuxi Skoll Automatic Control Equipment Co., Ltd., Jiangnan Valve Co., Ltd., Zhejiang Ruige Copper Industry Co., Ltd., BAND Valve Technology Co., Ltd., Lianggong Valve Group Co., Ltd., Aogong Valve Co., Ltd., Zhejiang Yongyuan Valve Co., Ltd., Jiangsu Shengtai Valve Co., Ltd., Yonglong Valve Co., Ltd., Jiangsu Shengye Valve Co., Ltd., Zhejiang Tingyu Fluid Equipment Co., Ltd., Kairuite Valve Industry Co., Ltd., Fangyuan Valve Group Lishui Co., Ltd., Tianjin Better Fluid Control Valve Co., Ltd., Ningbo Rian Valve Co., Ltd., Jiangsu Jiangyuan Machinery Co., Ltd., Keystone Valve Co., Ltd., Xipai Group Co., Ltd., Zhejiang Deka Control Valve Instrument Co., Ltd., Datong Muhui Group Co., Ltd., Dongbao Valve Co., Ltd., and Jitai Valve Group Co., Ltd. The main drafters of this document. Huang Mingya, Wang Xiaojun, Wu Lei, Zeng Heyou, Zhang Xiaozhong, Wang Yin, Ye Xunliang, Li Yufei, Zhi Zuochang, Liang Sufang, Hao Wenming, Wang Xuefeng, Wang Ce, Liu Lan, Wu Xingguang, Huang Jun, Yang Jie, Liu Peijian, Wang Zhangzhang, Yan Rongjie, Wu Jiquan, Wang Shurong, Jing Dongyang, Ke Yihang, Dong Cheng, Duan Tingting, Li Zhenkun, Xia Xuchao, Zhang Peng, Zhang Xiongjie, Li Huanyu, Yan Tao, Yu Jinxian, Sun Jin, Gao Kaike, Chen Yong, Zhang Rongwei, Li Dongming, Wu Haifeng, Kuang Qianqian, Teng Nan, Zhuang Xin, Ye Feng, Wang Zijie, Liu Yu, Huang Binbin. The release status of previous versions of this document and the documents it replaces are as follows. ---First published as GB/T 26481-2011 in.2011; --- This is the first revision. Fugitive test of industrial valves1 ScopeThis document specifies the valves whose medium will produce volatile polluting gas or dangerous gas, check the valve stem (shaft) and valve body Product acceptance test procedure for leakage at joints. This document is applicable to the fugitive test of industrial valves with fugitive requirements during production and delivery. This document does not apply to product acceptance tests for end connections, vacuum applications, corrosion and radiation applications.2 Normative referencesThe contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 40079-2021 Valve fugitive test classification and qualification procedures (ISO 15848-1.2015, MOD)3 Terms and DefinitionsThe following terms and definitions defined in GB/T 40079-2021 apply to this document. 3.1 A factory test of the valve to verify that it meets the requirements of this document.4 Preparation of test valves4.1 Number of test valves The acceptance test of each batch of products is based on the valve type, nominal pressure, and nominal size, and the sampling quantity is determined by the manufacturer and the buyer through negotiation. The random sampling quantity of each valve shall not be less than 1. 4.2 Conditions for test valves 4.2.1 For valves that have passed the fugitive test according to GB/T 40079-2021, before the acceptance specified in this document, the selected valves can be considered as Relevant product tests and tests specified by the buyer are qualified. 4.2.2 The manufacturer should ensure that the packing and sealing gasket of the valve are dry before the test (there should be no moisture or it should be carried out after the hydrostatic test). 4.3 Adjustment of valve stem (shaft) seal Before the test, the preload of the valve stem (shaft) seal should be adjusted according to the instructions of the valve manufacturer; adjustment is not allowed after the start of the test.5 Test conditions5.1 Test medium The test medium is helium, and its volume fraction should not be lower than 97%. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 26481-2022_English be delivered?Answer: Upon your order, we will start to translate GB/T 26481-2022_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 26481-2022?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 26481-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
