T/SLEA 0031.4-2022 (English Version) PDF

Scope: This document specifies the terms and definitions, classification, materials, requirements, test methods, inspection rules and markings, packaging, transportation, storage, installation guidelines, use and maintenance, and troubleshooting of laboratory gas valves. This document is applicable to laboratory air valves and terminal air nozzles with metric outer diameters not larger than 32mm (DN25). The air nozzle is the air outlet on the valve. This document does not apply to cryogenic fluids such as liquid nitrogen and liquid helium in the laboratory. Stainless steel valves should be used for gases such as acetylene and ethylene. (Note: The CCS number in the standard is determined according to the "Chinese Standard Document Classification Number" used in the regulatory bureau system. The classification number used in the database of this platform is the 2017 version of the national economic industry classification number. The classification numbers in the two systems are inconsistent. , when uploading to this platform, the classification number of this platform is re-selected, so after downloading the standard text, you will see that the CCS number is inconsistent with the classification number selected in this system)

T/SLEA 0031.4-2022 history

2022 T/SLEA 0031.4-2022 Technical requirements for laboratory water and gas fittings Part 4: Gas valve