產(chan)品介紹:
70度防火(huo)(huo)(huo)閥(fa)(fa)的特點是(shi)(shi)常開,防火(huo)(huo)(huo)常開,遇火(huo)(huo)(huo)關(guan)(guan)(guan)閉(bi)。70度防火(huo)(huo)(huo)閥(fa)(fa)用在(zai)空調(diao)送風(feng)、通(tong)風(feng)系統(tong)管(guan)道上;平時(shi)(shi)常開,發生火(huo)(huo)(huo)災(zai)(zai)(zai)時(shi)(shi)關(guan)(guan)(guan)閉(bi),聯鎖(suo)風(feng)機(ji),使(shi)(shi)風(feng)機(ji)關(guan)(guan)(guan)閉(bi); 通(tong)風(feng)管(guan)是(shi)(shi)火(huo)(huo)(huo)災(zai)(zai)(zai)時(shi)(shi)不(bu)使(shi)(shi)用的到(dao)70度時(shi)(shi)關(guan)(guan)(guan)閉(bi)防火(huo)(huo)(huo)閥(fa)(fa)起到(dao)阻止火(huo)(huo)(huo)災(zai)(zai)(zai)蔓延的作用。排煙(yan)(yan)系統(tong)的防火(huo)(huo)(huo)閥(fa)(fa)是(shi)(shi)在(zai)火(huo)(huo)(huo)災(zai)(zai)(zai)是(shi)(shi)排煙(yan)(yan)的,煙(yan)(yan)氣(qi)溫度較高,到(dao)280度時(shi)(shi),這個(ge)火(huo)(huo)(huo)災(zai)(zai)(zai)通(tong)過機(ji)械排風(feng)已經(jing)達(da)不(bu)到(dao)效果了,排煙(yan)(yan)閥(fa)(fa)關(guan)(guan)(guan)閉(bi)防止風(feng)機(ji)等設(she)備(bei)損壞。