Typically 200ZJ-I-A85 mechanical seal on the pump given sample [Hs] value (pump suction on the vacuum height) or (NPSH) r value, is at standard atmospheric pressure Pa (Pa = 1.033kg / cm2 = Under 10.33mH2O) and water temperature is 20 ℃ (when Pv = 0.024kg / cm2 = 0.24mH2O) case, by a pump of the test result, it is (NPSH) r and [Hs] can be converted by the following formula: ( NPSH) r = 10.09- [Hs] + Vs2 / 2g m (1-11) where: Vs- pump suction velocity m / s; 1. cavitation and damage to the pump if the pump in operation noise and vibration 200ZJ-I-A73 mechanical seal, and is accompanied by a small flow, head low and insufficient output power and small phenomena, sometimes it does not work 200ZJ-I-A70 mechanical seal, when the overhaul this pump, often found in the leaves side near the front cover and leaves near the entrance at the side of a pitted or cellular state, but the parts appear badly worn, seriously cover the entire front and rear blades have this phenomenon, even the blades and the cover is worn, it Cavitation is caused by the destruction. 200ZJ-I-A73 mechanical seal mechanical seal _ _ mechanical seal Ltd. provided by the Shijiazhuang-send pump. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) strong, credible, and other industries in other Shijiazhuang, Hebei accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shijiazhuang-faction pump into the brilliant and you work for a better future!