Progressive Cavity Pumps for Marine Applications
ACCA progressive cavity pumps provide controlled positive-displacement transfer for bilge mixtures, oily sludge, waste oil, viscous fuel, blackwater and other difficult shipboard fluids.
Why progressive cavity pumps work well aboard vessels
A progressive cavity pump uses a helical rotor turning inside an elastomeric stator to create sealed cavities that move continuously from suction to discharge. The result is steady positive-displacement flow that is approximately proportional to rotational speed, making the technology well suited to marine duties where fluid viscosity, solids content and operating conditions can vary.
For shipboard transfer, ACCA progressive cavity pumps combine compact positive-displacement performance with the ability to handle viscous oils, sludge and solids-bearing wastewater. Their low-pulsation delivery is useful for controlled transfer, and VFD speed control allows pump output to be matched to changing operating requirements.
Designed around the actual marine fluid
Bilge mixtures, waste oil, fuel and blackwater place different demands on the rotor, stator, sealing arrangement and drive. ACCA evaluates viscosity at operating temperature, solids and debris, differential pressure, suction conditions, duty cycle and chemical compatibility before selecting the pump configuration.
Viscosity can change substantially as marine fuels and oils cool or heat, so startup conditions and minimum expected fluid temperature matter as much as normal operating temperature. For sludge and wastewater service, solids concentration and maximum particle size are also important to pump speed and component selection.
Marine progressive cavity pump applications
Bilge, Sludge & Waste Oil
Transfer of variable oily mixtures containing water, sludge and suspended solids.
Fuel & Viscous Liquid Transfer
Positive-displacement transfer for viscous marine fuels, oils and process liquids.
Sewage & Blackwater
Controlled transfer of marine wastewater and solids-bearing blackwater streams.
Marine pump selection data
For application review, provide required flow, suction and discharge pressure, fluid description, minimum and maximum viscosity, operating temperature range, solids content and particle size, available suction conditions, operating hours and electrical/drive requirements. Installation constraints such as available footprint, connection orientation and service access should also be identified.
ACCA uses this information to evaluate displacement, speed, staging, rotor and stator materials, elastomer compatibility, drive torque and connection arrangement. This creates a direct engineering path from the marine application to the appropriate ACCA pump configuration.
Complete pump and replacement-parts support
As ACCA’s new-pump model pages are expanded, the marine application center will connect to suitable pump families and model-specific technical information. Those pump pages will in turn connect to rotors, stators, joint components and other replacement parts, creating a complete path from application selection through long-term service support.
Tell us what you need to pump
Send fluid, flow, pressure, viscosity, temperature, solids and installation conditions for ACCA pump selection.