280度排煙防火閥
- 280度排煙防火閥
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280度(du)防(fang)火閥介紹(shao):
280度(du)(du)防火(huo)閥排煙(yan)防火(huo)280常(chang)閉(bi),遇火(huo)開始排煙(yan)。開當空氣(qi)氣(qi)流到280關(guan)閉(bi)。280度(du)(du)防火(huo)閥用在排煙(yan)系統管道上(shang),平時常(chang)開,發生(sheng)火(huo)災時排煙(yan),當煙(yan)氣(qi)溫度(du)(du)達到280度(du)(du)時,防火(huo)閥關(guan)閉(bi),聯(lian)鎖風(feng)機關(guan)閉(bi);
280防火(huo)閥又叫高(gao)溫(wen)防火(huo)閥,一般安(an)裝在有高(gao)溫(wen)環境的通風管道中(zhong)(zhong),當溫(wen)度(du)(du)到達280后易熔(rong)合金熔(rong)化(hua),閥門(men)關(guan)閉(bi),同時(shi)(shi)可以用24V電信號控(kong)(kong)制。如果說是(shi)280排(pai)煙(yan)防火(huo)閥應(ying)為常閉(bi),安(an)裝在排(pai)煙(yan)管道中(zhong)(zhong)發生火(huo)災(zai)時(shi)(shi)控(kong)(kong)制中(zhong)(zhong)心(xin)給出電信號使(shi)其打開排(pai)煙(yan),當溫(wen)度(du)(du)到達280時(shi)(shi)易熔(rong)合金熔(rong)化(hua)閥門(men)關(guan)閉(bi),是(shi)一種(zhong)二(er)次(ci)動作的閥門(men)。