A valve mechanism in brass instruments for altering the pitch.
活塞阀键一种铜管乐器上调节音量的活塞阀键
hydraulic relay valve piston cup
液压继动阀活塞皮碗
In all designs, the valve stem normally serves as a piston rod with disc fastened directly to them.
在所有结构中，阀杆通常作为活塞杆，阀瓣直接固定在阀杆上。
Neoflon inserts are available for globe, piston, and swing check discs.
备有可用于截止阀，活塞和旋启式止回阀阀瓣的四氟乙烯镶嵌件。
Resilient inserts are available for globe, piston and swing check discs.
可以为截止阀、活塞或旋启式止回阀阀瓣提供弹性镶嵌物。
Mr. Sloan also developed piston-type Flushometers.
思龙先生还开发了活塞式冲水阀。
positioning of piston operated value
控制活塞操纵阀的开启程度
The Design and Study on the Ball-Valve Pulsator of Piston Milking Machine;
活塞式挤奶机球阀脉动器的设计研究
3-Way Plug Valve 1;3-Way Plug Valve 2;3-Way Plug Valve 3
向旋塞阀 1;3 向旋塞阀 2;3 向旋塞阀 3
Remove the cover and diaphragm. The relief valve piston assembly can be lifted straight up and out.
拆卸阀盖和隔膜。安全阀活塞总成可以笔直提出到外面来。
A faucet or valve by which the flow of a liquid or gas can be regulated.
活塞一个能调节液体或气体流动的龙头或阀门，
The solenoid plunger pulls the vent valve down, blocking off the passage to the charcoal canister.
电磁柱塞拉下通气阀，堵住通向活性碳罐的通路。
The weight of the disc/piston is very helpful, especially in low pressure systems.
阀瓣/活塞压铁非常有用，特别是对于低压系统。
Research into Dynamic Performance and Digital Valve for Hydraulic Free Piston Engine;
液压自由活塞发动机运动特性及其数字阀研究
The Research of the Variable Displacement Control System of Piston Compressor;
阀配流式活塞式压缩机变排量控制系统的研究
The design of levers differential pressure piston pilot cup float steam trap
杠杆差压活塞先导式钟形浮子疏水阀的设计
This is a gate valve (check valve, butterfly valve, cut-off valve, magnetic valve, remote valve, relief valve, throttle valve, cock).
这是一个闸阀（止回阀、蝶阀、切断阀、电磁阀、遥控阀、安全阀、节流阀、旋塞）。
The line pressure required to open the valve is a function of the disc/piston weight and the size of the port diameter.
开启阀门所需要的管道压力取决于阀瓣／活塞的重量和阀门端口直径的综合作用。