1.CWZ Horizontal Self-priming Centrifugal marine sea water pump 2.cooling cooling water,bilge & ballast,ballast,fire fighting CWZ Horizontal Self-priming Centrifugal marine sea water pumpMarine CWZ type is used for cooling cooling water,bilge & ballast,ballast,fire fighting & general sercice. ModelCapacity(m3/h)Head(m)Speed(r/min)NPSHR(m)efficency (%)Power (kw)Weight (kg)32CWZ-582129504381. ...