单流阀的英文

• ball-and-seat
• check valve

• 单:    singular number fate; destin ...
• 阀:    established house or power g ...
• 定压单流阀:    constant pressure check valve
• 单流:    single current; single flow; singleflow; unaflow; uniflow
• 单流程:    single path

例句与用法

1. Water shutoff agent dsz - a is composed of inorganic particle . its specialities are low cost , easily flow , high strength and long valid period . the agent suits non - selective water shutoff in sand formation . dsz - a not only can plug high water - bearing formation , but also can plug case leakage . dsz - a has been applied on site and gotten good effect . it is a agent which has wide prospect
   井下护泵除砂装置主要用于产液气量高,出砂能力大,利用常规装置、常规方法很难治理的井.它的设计是建立在丢手封隔器卡封的基础上,将液体携砂能力由地层进入泵管转变为先过滤(双层激光割缝筛管部分) ,再在除砂器内静态沉淀、由单流阀排入井底等一系列除砂护泵优点.本文着重介绍了井下护泵除砂装置的工作原理与应用情况