Freezing Weather Precaution – Subsequent to testing a piping system, valves should be in an open position to allow complete drainage.
Freezing Weather Precaution – Subsequent to testing a piping system, valves should be in an open position to allow complete drainage.
结冰气候预防-检测管线系统后，阀门应该处于开启状态，做到排泄完全充分。