single bend valve

valve 阀门专业词汇A-Z ... single-beat valve 单层阀 single-bend valve 单弯阀 single-flapper valve 单喷嘴挡板阀 ...

GB/T... ... 直式气门嘴 straight valve 单弯式气门嘴 single-bend valve 双弯式气门嘴 double-bend valve ...