Shijiazhuang Tianyuan Pump series AH heavy duty pump large capacity high performance professional manufacturer ... impeller: An impeller adjustment mechanism is provided below the bearing housing.9) Centrifugal seal, mechanical seal and packing seal are available ... pumps, G/GH gravel pumps, SP/SPR sump pumps, series ZGB slurry pumps, series ZJ slurry pumps, sand pumps, mud pumps, ash ...