shut-offvalve 截止阀 ; 关闭阀 ; 切断阀

blow-offvalve 放气阀门放气滑老 ; 排污阀

take-offvalve 输出阀

cut-offvalve 关闭阀 ; 截止阀

pop-offvalve 安全阀

leak-offvalve 放泄阀

handcut-offvalve 手动截止阀

draw-offvalve 排污阀

on-offvalve 开关阀

spill-offvalve 分路式流量阀