Group Standards of the People's Republic of China CN / TUANTI
Latest
T/WZBF 040-2024
Scope
This standard specifies the structural type, technical requirements, test methods and inspection rules, marking, packaging, storage, transportation and supply of check valves for oxygen. This standard is applicable to working pressures not greater than 21MPa and greater than 0.1MPa, nominal sizes DN25~DN1000 (NPS1~NPS40), oxygen medium temperature -29℃~200℃, dew point not higher than -30℃, purity (volume fraction)> 23.5%. The connection method is flange, clamp or lug type oxygen check valve.