... 10%Insulation resitsanceTested by DC500V megohmmete for 1 min, the insulation resistance should ≥100MWatertight performanceHydrostatic pressure 0.02Mpa, ... ,make and break for 10s respectively, lasting 1h, the check valve should be unblocked.Flow characteristicsPressure 0.02Mpa ... for 12h, but not connect through the water, the valve should be no deformation, and the coil should not be burned;Withstand ...