1.
Research on Multi-way Directional Valve with High-speed On-off Valve as Its Pilot Valve
以高速开关阀为导阀的多路换向阀的研究
2.
Quick shutting valve for marine use
GB/T5744-1993船用快关阀
3.
The Static Design of Closed-loop System for High-speed Switch Valve Controlled Hydraulic Valve
高速开关阀控换向阀闭环系统的静态设计
4.
Marine male threaded weight quick-closing valves
GB/T1850-1984船用外螺纹重块式快关阀
5.
Gate valves serve as efficient stop valves with flow in either direction.
闸阀可作为流体双向有效的关闭阀。
6.
The stem rises and lowers as the valve is opened and closed.
当阀门开启或关闭时，阀杆上升或下降。
7.
Valve Disadvantages: The valve is difficult to close and requires the operator to double close the valve.
阀门的缺点：阀门难以关闭，要求操作者二次关闭阀门。
8.
After draining, close drain valve.
排泄完毕，关闭排泄阀。
9.
automatically shutting pressure of needle valve
针形阀自动关闭压力
10.
antidetonation electric control pneumatic switch ball valve
防爆电控气动开关球阀
11.
Gate and globe( metal to metal) seats cannot provide bubble tight shut-off. Resilient seated butterfly valves are bubble tight by design.
闸阀和截止阀（属与金属连接）阀座不具备不透气关闭的性能。
12.
Disc– machined seating surface is mated to seat ring for positive shutoff.
(4) 阀瓣-机加工阀座表面，配置阀座环，实现积极有效的关闭。
13.
Disc ? machined seating surface is mated to seat ring for positive shutoff.
阀瓣-机加工阀座表面，配置阀座环，实现积极有效的关闭。
14.
The stem position provides indication that valve is opened or closed.
阀杆的高低能够指示阀门处于开启或关闭状态。
15.
Analyze the relationship between flow, pressure, pressure differential and valve opening of pressure reducing valves.
分析了减压阀的流量、力、力差和阀门开度的关系。
16.
There can be no shutoff valves downstream of an AVB.
在大气真空断路阀的下游不能有关断阀。
17.
Slowly open upstream shutoff and allow the backflow preventer to fill slowly.
慢慢开启上游关闭阀，让防回流阀慢慢注水。
18.
A Method to Accelevate the Closing Process of The Main Valve Opening of Pilot Relief Valve;
加快先导式溢流阀主阀口关闭过程的方法