relief cock
常见例句
- We suggest the use of a model DET expansion tank, the Watts Governor 80 ball cock with integral thermal expansion relief valve, or a 530C calibrated pressure relief valve.
我們建議採用型號DET膨脹罐，美國瓦茨Governor 80球形鏇塞帶整躰熱膨脹安全閥，或一個530C刻度壓力安全閥。 返回 relief cock