Check the check valve spring.

检查逆止阀的弹簧。

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Control supply line water pressure. install a soft seated spring loaded check valve upstream of the assembly.

控制供应管道的水压。在总成的上游安装一个软阀座，弹簧负载止回阀。

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Mainly by the pilot valve seat, valve, diaphragm, spring, adjusting springs and other parts.

导阀主要由阀座、阀瓣、膜片、弹簧、调节弹簧等零件组成。

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In traditional geothermal energy, engineers drill near a geyser, hot spring or volcano, stick a valve and turbine on the hot water, and that's pretty much it.

FORBES: Magazine Article