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。R900576604DBE10-3X=200YG24Z4-308R900573783DBE10-5X/100XYG24Z4MR900916121DBE10-5X/100YG24K4MR901085195DBE10-5X/100YG24K4VR900920508DBE10-5X/100YG24NK4MR90057163DBE10-5X/100YG24NZ4MR900520027DBE10-5X/100YG24Z4MR900550696DBE10-5X/100YG24Z4VR900969650DBE10-5X/200XYG24K4MR900758752DBE10-5X/200XYG24K4VR900570668DBE10-5X/200XYG24Z4MR900579169DBE10-5X/200YG24K4MR900973475DBE10-5X/200YG24K4VR900923188DBE10-5X/200YG24NK4MR900714301DBE10-5X/200YG24NK4VR900536997DBE10-5X/200YG24NZ4MR900521576DBE10-5X/200YG24Z4MR900517820DBE10-5X/200YG24Z4VR901069892DBE10-5X/315XYG24K4MR900924161DBE10-5X/315XYG24NK4MR900579202DBE10-5X/315XYG24Z4M)