T/CMA RQ002-2018 Gas meter valve cover and valve seat are membrane type

Scope

Main technical content: This standard is based on the performance requirements of valve covers and valve seats in the use of diaphragm gas meters. A total of 22 manufacturers of valve covers and valve seats, diaphragm gas meter manufacturers, and metrology technical institutions were invited to discuss and their opinions were solicited by experts from the China Gas Meter Network and the Technical Committee of the Metrology Association to determine the standard content. This standard specifies the classification, terms and definitions, technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of valve covers and valve seats for diaphragm gas meters. The main technical features of this standard are as follows: 1. Provides terms and definitions for valve covers and valve seats used in diaphragm gas meters; 2. Specifies the performance requirements of phenolic molding materials for valve covers and valve seats based on the current technical parameters of materials used for valve covers and valve seats at home and abroad; 3. Specifies the performance requirements of finished valve covers and valve seats based on their impact on the performance of diaphragm gas meters; 4. Provides inspection rules and requirements for marking, packaging, transportation, and storage.

Development Information

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