保持阀 meaning in English
holding valve
maintaining valve
Examples
- Brine retaining valve
盐水箱保持阀 - Live - loading keeps the stem tight for long periods of time without maintenance
动负载能够在没有维护保养的情况下，长期保持阀杆的紧固。 - Leaving the disc in a fully closed position firmly closed also prevents weld spatter from falling directly onto the mating faces of the seat and disc
保持阀瓣处于完全关闭位置也能够避免焊花直接掉在阀座和阀瓣的连接面上。 - Ball valve design includes reinforced / enhanced ptfe seats and electroless nickel plated brass ball , blow - out proof pressure retaining stem , and low profile oval handle
球阀结构包括强化聚四氟乙烯（ ptfe ）阀座和非电解镍镀层黄铜球体，防吹出压力保持阀杆，以及低矮型椭圆手柄。 - Stem force , not line pressure , maintains seating contact in this unique design , ensuring tight seating in both directions ( see alternative seat designs on page 10 )
这种独特的设计结构，使得阀杆力，而不是管路压力，保持阀座具有足够的压力，确保两侧能够紧密密封（参阅第10页上可替换的阀座结构） 。