在监督检查工程质量时 ,经常发现热水供暖系统末端使用的自动排气阀漏水。笔者认为自动排气阀漏水有其自身和系统存在的问题。具体分析如下。图 1　除污器剖面图1ＤＮ2 0短丝头　 2ＤＮ2 0钢管箍3 0 .8不锈钢丝网4ＤＮ2 0短丝头长 10ｍｍ①自动排气阀内的浮球多为塑料件 ,而且 In the supervision and inspection of project quality, often found in hot water heating system used at the end of automatic exhaust valve leakage. I believe that the automatic exhaust valve leakage has its own and system problems. Specific analysis is as follows. Figure 1 decontamination cutaway 1DN2 0 short 2DS2 0 steel pipe hoop 3 0 .8 stainless steel wire mesh 4DN2 0 short length 10mm ① automatic discharge valve float mostly plastic parts, and