CWF marine domestic sewage crushing centrifugal pump

A heavy-duty open-impeller centrifugal pump engineered for shipboard domestic sewage and low-temperature heavy-oil crushing. The pump pulverizes soft sewage and solids so the maximum particle diameter after circulating and crushing does not exceed 5 mm, and it is rated for service with liquids up to 85 °C.

Key features

• Open-impeller design with an integral crushing blade at the impeller inlet to cut fibrous and soft solids and prevent clogging.
• Short back vanes on the impeller to help balance axial forces and improve hydraulic stability.
• Sealing options: double skeleton oil seal with an oil cup for timed lubrication; Type B configuration is available with a mechanical seal.
• Pump casing removable by a 1:5 taper fit secured with four studs for simplified inspection and maintenance with minimal operator contact with wastewater; rubber sealing ring between mating surfaces.
• Direct-coupled marine electric motor; rotation is clockwise when viewed from the suction side.
• Robust construction: cast iron casing, bronze impeller, stainless-steel shaft — designed for the corrosive and abrasive conditions common in marine sewage handling.

Applications

• Shipboard domestic sewage and blackwater handling
• Crushing and transfer of low-temperature heavy oil and sludges to enable injection or pumping
• Any marine environment where reliable solids-handling and anti-clogging performance are required

Benefits for B2B buyers

• Reduces pump blockage and maintenance downtime through in-line crushing
• Simplified inspection and removal of rotating assembly to minimize crew exposure to wastewater
• Flexible sealing arrangements to match duty cycles and maintenance regimes

Typical model: 3CWF-10B. For selection specify required flow, head, motor voltage/speed, and preferred seal type (double oil seal or mechanical seal).