力乐士比例阀R900560214 DBE 10-5X/50YG24Z4V

排放后阀瓣不回座：这主要是弹簧弯曲阀杆、阀瓣安装位置不正或被卡住造成的。应重新装配。

泄漏：在设备正常工作压力下，阀瓣与阀座密封面之间发生超过允许程度的渗漏。其原因有：阀瓣与阀座密封面之间有脏物。可使用提升扳手将阀开启几次，把脏物冲去；密封面损伤。应根据损伤程度，采用研磨或车削后研磨的方法加以修复；阀杆弯曲、倾斜或杠杆与支点偏斜，使阀芯与阀瓣错位。应重新装配或更换；弹簧弹性降低或失去弹性。应采取更换弹簧、重新调整开启压力等措施。

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