operating microscope in the same time check the check valve is tight
time2012/02/26
operatingmicroscopeinthe same timecheck thecheck valveistight,piping, fittingswithout leakagephenomenon,foundtheleak.operatingmicroscope inafter the demolition ofthejointscoated withoil orblendingpaint,and tighten thescrews.Theoperatingmicroscope inbecause theair orthe inletgas accumulation, ortheend of the valvein the pump bodylaxofftheirrigation waterdiscontent,seriousleakofthevacuum pumppacking,gate ordoorclosed lax. operating microscopRemedy: First thewater pressureup, and thenpumpfilled with water,andthenboot.