Valves for gas installations; straight pattern taps with compression fitting
气体装置用阀门；带压缩配件的直型丝锥

1982-03-01

Gas valves for gas installations - Straight pattern conicel plug valves with screw connection - Nozzles with conical connection
气体装置用气阀.带螺纹连接的直型锥形旋塞阀.带锥形连接的喷嘴

2012-06-01

Valves for gas installations; straight pattern stop cocks female threaded ends
气体装置用阀门；直型旋塞内螺纹端

1982-03-01

Draft Document - Gas valves for gas installations - Nozzles with conical sealing and gasket
文件草案.气体装置用气阀.带锥形密封和垫圈的喷嘴

2009-03-01