horizontal swing check valve是什么

horizontal swing check valve是什么 Flange swing check valve BS 5163 Gate Valve and BS 5153 Swing Check Valve Gate Valve 英语翻译valve code :c-10valve type :check (swing)body matarial : Spring loaded check valve是什么阀 check valve comp swing是什么 check valve 和 non-return valve 一样么? horizontal “horizontal hose-burst valve和lose-burst check through valve是什么阀?