BZ series self-priming pump WZ self-priming sewage pump ZBsingle stage suction centrifugal pump CBZ type boat-used self-priming pump SPWmulti-suction heads discharge pump Well Machine Export Ariculture-used self-priming pump TRIExport Ariculture-used pump Spraying pump Ariculture-used pump Impurity pump   Spraying pump   Type Qmax Speed (r/min) Efficiency η (%) Power (Ps) Hmax (m) Suction lift （m) Drawing time (min/5m) Mass W (kg) 50BPZ－35 14 2900 52 6 36 7 3 30