Make sure the discharge of this valve is directed to an open drain and protected from freezing.

要确保阀门排泄的水直接排放到一个畅通的排水口，并保证不会冻结。

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Make sure the discharge of this valve is directed to an open drain and protected from freezing.

要确保阀门排泄的水直接排放到一个畅通的排水口，并保证不会冻结。

youdao