防煙(yan)防火(huo)(huo)(huo)閥主要應(ying)(ying)用(yong)(yong)于(yu)通(tong)風(feng)和空調系(xi)(xi)統(tong)，防煙(yan)防火(huo)(huo)(huo)閥一般(ban)安(an)裝(zhuang)在(zai)通(tong)風(feng)系(xi)(xi)統(tong)和空調系(xi)(xi)統(tong)機房的防火(huo)(huo)(huo)分隔處，是(shi)(shi)70攝氏度(du)(du)防火(huo)(huo)(huo)閥，平(ping)(ping)時(shi)常開，當風(feng)管(guan)(guan)中(zhong)煙(yan)氣溫度(du)(du)達到70度(du)(du)是(shi)(shi)自動(dong)(dong)(dong)關(guan)閉。控制(zhi)(zhi)方式為自動(dong)(dong)(dong)。排煙(yan)防火(huo)(huo)(huo)閥主要應(ying)(ying)用(yong)(yong)于(yu)機械排煙(yan)系(xi)(xi)統(tong)中(zhong)，是(shi)(shi)280攝氏度(du)(du)防火(huo)(huo)(huo)閥，平(ping)(ping)時(shi)為常閉，火(huo)(huo)(huo)災(zai)發生(sheng)時(shi)受火(huo)(huo)(huo)災(zai)自動(dong)(dong)(dong)bao警聯動(dong)(dong)(dong)信(xin)號自動(dong)(dong)(dong)開啟，同時(shi)具備手(shou)動(dong)(dong)(dong)執行(xing)機構，可手(shou)動(dong)(dong)(dong)開啟，也可在(zai)消防控制(zhi)(zhi)zhongxin遠程開啟(即聯動(dong)(dong)(dong)控制(zhi)(zhi)、手(shou)動(dong)(dong)(dong)控制(zhi)(zhi)、自動(dong)(dong)(dong)控制(zhi)(zhi)三(san)種(zhong)方式)，一般(ban)安(an)裝(zhuang)于(yu)排煙(yan)口、風(feng)管(guan)(guan)穿越防火(huo)(huo)(huo)、防煙(yan)分區分隔處和排煙(yan)機房風(feng)管(guan)(guan)穿墻處，當風(feng)管(guan)(guan)中(zhong)煙(yan)氣溫度(du)(du)達到280度(du)(du)時(shi)關(guan)閉。

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