单座阀 meaning in Chinese

single seated valve
single-seat valve

Three - way valve is used to replace two single - block , the first valve input system
三通阀最早是用于代替两台单座阀投入系统使用。
Three - way valve has three entrances and pipes , equivalent to two single - block valves synthetic one
三通阀有3个出入口与管道相连，相当于两台单座阀合成一体。
Three - way valve has three entrances and pipes , equivalent to two single integrated block valves ; use three - way valve , a two - valve and can be saved over a three links
三通阀有3个出入口与管道相连，相当于两台单座阀合成一体；使用三通阀时，可省掉一个两通阀和一个三通接管。