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Check valves, Figure 2.29, are two-port valves—one for fluid to enter and the other for fluid to leave. Normally, the check valve closes under the action of the spring force on the left. When the fluid flows from right to left and the fluid pressure is greater than the cracking pressures, the spool moves off of its seat and opens the valve.
globe valve是截止阀；ball valve是球阀；check valve是逆止阀。截止阀，也叫截门，是使用最广泛的一种阀门，它之所以广受欢迎，是由于开闭过程中密封面之间摩擦力小，比较耐用，开启高度不大，制造容易，维修方便，不仅适用于中低压，而且适用于高压。
check valve. na.【机】止回阀. 单向阀；逆止阀；止逆阀. 例句. 1.A double check valve assembly shall be installed at each noted location. 双止回阀总成应该安装在每个指定的位置。. 2.and a pilot operated check valve is linked with a valve block on the oil cylinder. 液控单向阀与油缸上的阀块相联接。.
2016年7月25日 · check valve. 英 [tʃek vælv] 美 [tʃɛk vælv] n.止回阀. 例句：. 1.Remove check valve and valve seal from booster. 从倍力器上卸去逆止阀和阀门密封。. 2.To avoid this discharge, install a spring-loaded, rubber seated check valve ahead ofthe backflow assembly. 为了避免这种排放，要在防回流阀总成前面安装 ...
2014年2月1日 · In the ball check valve, the Re number has been calculated as (9) Re = 4 ρ Q μ π ϕ where ρ is the fluid density, Q is the flow rate, μ is the viscosity and ϕ is the inlet diameter of the valve (see Fig. 14).
2022年2月1日 · Taking a check valve with inlet pressure of 10 MPa and outlet pressure of 2 MPa as an example (Case 3 in Table 1), the transient high-pressure hydrogen flow behaviors in the check valve are studied. Fig. 5 shows the flow characteristics of the hydrogen flow in the check valve at different times of 0.5 ms, 1.0 ms, 1.5 ms, and 2.0 ms.
2015年1月22日 · Check valve keys to ensure that they are installed correctly. 检查气门锁片以确保其安装正确。. 启闭件靠介质流动和力量自行开启或关闭，以防止介质倒流的阀门叫止回阀。. 止回阀属于自动阀类，主要用于介质单向流动的管道上，只允许介质向一个方向流动，以防止发生 ...
2021年6月1日 · It has been widely investigated and applied in many fields. This paper summarizes the development of passive check valve piezoelectric pumps in recent years, and introduces different types of check valves. The configuration, material and processing of the check valve is mainly introduced. The structural diagram of each check valve is presented.
2024年1月1日 · However, check valves also encounter the phenomenon known as “check valve slam”, which arises from the water hammer effect when the reverse flow fluid experiences an instantaneous velocity reduction to zero upon valve disc closure, as well as the impact of the valve disc on the valve seat.
The check valve is another type of flow control valve. The function of a check valve is to permit flow in only one direction. A very common function of flow control valves is to control the speed of cylinders and air motors. The speed of cylinders or air motors depends on the amount of air, which can be controlled by flow control valves.
