air back valve 中文意思是什麼
air back valve
解釋
空氣止回閥-
Research on action of slow closure back pressure valve in water delivery system with air cushion surge tank
設置氣壓式調壓室的輸水系統中緩閉止回閥作用的研究 -
Fire proof valve refers installed in the ventilation, air - conditioning systems to send, and the road back to the wind, opened in a state of fire when the temperature reached 70 degrees, the gas automatically closed in a certain period of time to meet the fire resistance requirements of the stability and integrity of fire resistance, a possible role of the fire fight valves
防火閥是指安裝在通風、空調系統的送、回風管路上,平時呈開啟狀態,火災時當管道內氣體溫度達到70時自動關閉,在一定時間內能滿足耐火穩定性和耐火完整性要求,起隔煙阻火作用的閥門。
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