Marine Self-priming Centrifugal Vortex Pumps CWX series CWX Series Self-priming Centrifugal Vortex Pumps are designed for pumping fresh water and sea water for drinking,washing and sanitation.They are also used for boiler feed, water circulation,etc.There are many pump models 1.5CWX-2A, 1.5CWX-3A, 1.5CWX-4A, 1.5CWX-2, 1.5CWX-3, 1.5CWX-4 supplied and traded by Ekahip Ha***are ntact Ekahsip for not only below info. Power: Electric Structure: Single-stage Pump Theory: Centrifugal Pump Type: Positive-Displacement Pump Application: Sewage Pump Material: Cast Iron.