深圳防爆电液阀 GDFWH-04-2B9B-D24-XY-50,电液换向阀

　　GDFWH-04-2B9B-D24-XY-50,电液换向阀,电液换向阀 防爆电液换向阀 防爆电磁换向阀 煤矿用防爆电磁阀

　　概述：

　　防爆电磁阀是把设备可能点燃爆炸性气体混合物的部件全部封闭在一个外壳内，其外壳能够承受通过外壳任何接合面或结构间隙，渗透到外壳内部的可燃性混合物在内部爆炸而不损坏，并且不会引起外部由一种、多种气体或蒸气形成的爆炸性环境的点燃，把可能产生火花、电弧和危险温度的零部件均放入隔爆外壳内，隔爆外壳使设备内部空间与周围的环境隔开。隔爆外壳存在间隙，因电气设备呼吸作用和气体渗透作用，使内部可能存在爆炸性气体混合物。

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