backflow check valve的意思|示意

The installation of a strainer ahead of the backflow preventer is recommended to prevent fouling of the check assembly and resultant spillage from the valve during repressurizing.

建议在防 回流阀前安装一个 过滤器，防止止回阀受到污染和阀门在再增压期间出现泄漏或溢出。

Double Check Valve Assembly shall be installed at referenced cross-connections to prevent the backflow of polluted water into the potable water supply.

在相关的交叉连接处应该安装一个双止回阀总成，以防止受到污染的水回流到饮用水系统中。

The TK-DL can test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies.

TK - DL可以检测压力真空断路阀，减压防回流阀或双止回阀总成。

Reversed flow is stopped or held in "check" by fluid backflow pressure which seats the closure device against the valve body.

倒流的流体通过倒流的流体压力将止回关闭装置与阀体紧密密封，从而实现阻止倒流的“止回”功能。

Designed to test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies, allowing you to eliminate both pressure and differential test gauges.

适用于检测压力真空断路阀，减压防回流阀或双止回阀总成，不再需要压力表和压差表。

The role of the check valve to prevent water backflow, with the film door, also do not need a check valve.

逆止阀的作用是防止水倒流，有了拍门后，也就不需要逆止阀了。