检查逆止阀的弹簧。

Check the check valve spring.

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空气逆止阀就会在所有的盐水被吸完之前关闭。

The air check shuts off before all the brine solution has been drawn out.

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本发明公开了一种地漏和地漏橡胶逆止阀。

The invention discloses a floor drain and a floor drain rubber check valve.

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本发明公开了一种地漏和地漏橡胶逆止阀。

The invention discloses a floor drain and a floor drain rubber check valve.

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