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排氣閥應(ying)用于獨(du)立采(cai)(cai)暖系(xi)(xi)(xi)統(tong)、集中(zhong)供熱(re)系(xi)(xi)(xi)統(tong)、采(cai)(cai)暖鍋 爐、中(zhong)央空調、地板(ban)采(cai)(cai)暖及太陽能采(cai)(cai)暖系(xi)(xi)(xi)統(tong)等管道(dao)排氣(qi)(qi)(qi)(qi)。因為(wei)水(shui)中(zhong)通常都溶(rong)(rong)有一定的空氣(qi)(qi)(qi)(qi),而(er)且空氣(qi)(qi)(qi)(qi)的溶(rong)(rong)解度(du)隨著溫(wen)度(du)的升高而(er)減少,這(zhe)樣水(shui)在(zai)循環的過程中(zhong)氣(qi)(qi)(qi)(qi)體逐漸(jian)從(cong)水(shui)中(zhong)分離出來,并逐漸(jian)聚在(zai)一起形成大的氣(qi)(qi)(qi)(qi)泡甚至氣(qi)(qi)(qi)(qi)柱,因為(wei)有水(shui)的補充,所以經(jing)常有氣(qi)(qi)(qi)(qi)體產生。