... popluar in irrigation,sprinkler 4.High delivery lift pump MODEL: ZW-30cx <1.> Pump Parameter .Pump type : self-primingPump material : aluminium alloy ... ,assemble body parts and engine parts, have a special inspection test against engine ,ensure engine’s durablity, stablity , lower noize ... the production, and have a test of the engine durablity, stablity on test machine ,and test 5% of this batch , ...