压力/真空阀 pressure/vacuum valve
真空压力阀 pressurevaccuum valve ; vacuum pressure valve ; pre urevaccuum valve
压力真空呼吸阀 pressure and vacuum breather valve
压力和真空释放阀 pressure-and-vacuum release valve
压力-真空安全阀 pressure vacuum breaker
压力-真空切断阀 pressure and vacuum breaker
压力真空切断阀 pressure and vacuum breaker
真空压力安全阀 LVPSV
手动高真空压力球阀 ZKQF
石油的压力会迫使它上升到真空阀的中心处。
The oil pressure will force it up into the heart of the stack of valves.
TK - DL可以检测压力真空断路阀，减压防回流阀或双止回阀总成。
The TK-DL can test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies.
适用于检测压力真空断路阀，减压防回流阀或双止回阀总成，不再需要压力表和压差表。
Designed to test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies, allowing you to eliminate both pressure and differential test gauges.
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