12V/24V Marine Macerator Sewage Pump - Cut-Type Impeller, 38mm Inlet
The AirowMarine 12V/24V Marine Macerator Sewage Pump is designed for compatible boat sanitation and black water waste systems. Featuring a cut-type impeller, a 38mm (1-1/2") inlet, and a 25mm (1") outlet, this electric marine macerator pump is intended to process and transfer wastewater through compatible sanitation plumbing.
The pump features a UV-stabilized ABS polymer housing and 316 stainless steel fasteners. Choose the correct 12V or 24V version to match your vessel's DC electrical system, and verify the plumbing connections and installation requirements before ordering.
Before ordering
Confirm the selected voltage, inlet and outlet connection dimensions, and available mounting space. The listed 38mm inlet and 25mm outlet may refer to nominal hose sizes; verify the actual connection dimensions before purchasing fittings or hoses.
Product Specifications
| Brand | AirowMarine |
| Product Name | Marine Macerator Sewage Pump |
| Product Type | Electric Marine Sewage Pump |
| Pump Category | Marine Macerator Pump |
| Available Voltage | 12V or 24V DC; select the correct version |
| Impeller Type | Cut-Type Impeller |
| Inlet Diameter | 38mm (1-1/2"); confirm connection type and actual diameter |
| Outlet Diameter | 25mm (1"); confirm connection type and actual diameter |
| Housing Material | UV-Stabilized ABS Polymer |
| Fastener Material | 316 Stainless Steel |
| Product Dimensions | Approximately 290 × 120 × 95mm |
| Intended Application | Compatible marine sanitation and black water systems |
| Potential Vessel Types | Yachts, sailboats, motorboats, houseboats, and commercial vessels with compatible systems |
Key Features of the Marine Macerator Pump
1. Designed for Marine Sanitation Systems
This electric marine macerator pump is intended for compatible boat sewage and black water systems. It is designed to process and transfer wastewater through an appropriately configured sanitation pipe system.
It may be considered for suitable yacht, sailboat, motorboat, and houseboat installations. Compatibility depends on the vessel's plumbing layout, electrical supply, waste system configuration, and the pump's operating specifications.
2. Cut-Type Impeller Design
The integrated cut-type impeller is designed to break down suitable solid waste into smaller particles during pumping. This cutting action is intended to support wastewater transfer through compatible sanitation plumbing.
Waste-handling capability and the risk of blockages depend on the pump design, the material being handled, operating conditions, and the manufacturer's specifications. Follow the manufacturer's guidance regarding permitted waste and use.
3. Selectable 12V or 24V DC Power
Available in 12V and 24V configurations, this boat sewage pump provides voltage options for compatible marine DC electrical systems.
Select the version that matches your vessel's electrical supply. A 12V model must not be connected to a 24V supply, and a 24V model must not be connected to a 12V supply unless the manufacturer explicitly specifies otherwise.
Before installation, verify the rated current, wiring size, fuse rating, circuit protection, and electrical connection requirements from the applicable pump documentation.
4. 38mm Inlet and 25mm Outlet
The listed inlet is 38mm (1-1/2"), and the listed outlet is 25mm (1"). Check the existing hose sizes, connection types, and routing requirements before purchasing.
Depending on your plumbing configuration, compatible adapters or hose fittings may be needed. Do not assume the listed measurements represent the actual outside diameter of the connection without checking the technical details.
5. UV-Stabilized ABS Polymer Housing
The pump uses a UV-stabilized ABS polymer housing intended for marine equipment applications. Correct mounting, suitable operating conditions, and regular inspection are important for reliable service.
Confirm the manufacturer's environmental and installation guidance before exposing the pump to specific weather, temperature, or moisture conditions.
6. 316 Stainless Steel Fasteners
The pump uses 316 stainless steel fasteners. This grade of stainless steel is commonly selected for marine hardware because of its corrosion resistance in many marine environments. Routine inspection and cleaning are still recommended, particularly in saltwater applications.
7. Compact Installation Dimensions
The listed overall dimensions are approximately 290 × 120 × 95mm. Measure the intended installation area before ordering, allowing extra space for hose connections, wiring, servicing, and pump removal.
Applications and Compatibility
The AirowMarine marine macerator sewage pump is intended for compatible marine sanitation and black water systems. Potential applications include:
- Yachts and recreational boats
- Sailboats and motorboats
- Houseboats
- Commercial marine vessels with compatible sanitation systems
Vessel type alone does not guarantee compatibility. Before ordering, verify the following:
- Your vessel's DC electrical supply and the selected 12V or 24V version.
- The required inlet and outlet connection dimensions and types.
- The existing hose material, size, and plumbing layout.
- Available installation space and mounting requirements.
- The pump's flow rate, maximum head, waste-handling capability, and other specifications against your system requirements.
- Applicable electrical protection, sanitation, and waste-discharge requirements.
Choose the correct pump for your system
This product is intended for compatible sanitation and wastewater applications. It should not be treated as a direct replacement for a bilge pump, freshwater pump, or general-purpose transfer pump.
Frequently Asked Questions
What is a marine macerator sewage pump used for?
A marine macerator sewage pump is designed for wastewater handling in compatible boat sanitation systems. Its cutting mechanism helps break down suitable solid waste during pumping. Follow the manufacturer's instructions for permitted materials and operating conditions.
Is this a 12V or 24V boat sewage pump?
Both 12V and 24V versions are listed as available. Select the correct version for your vessel's electrical system and verify the model label before connecting power.
What are the inlet and outlet sizes?
The listed inlet is 38mm (1-1/2"), and the outlet is 25mm (1"). Confirm whether these measurements refer to nominal hose sizes or actual connection diameters before installation.
Can this pump be used with a boat black water tank?
It is intended for compatible marine sanitation and black water systems. Check the required flow rate, discharge conditions, plumbing arrangement, and waste-handling specifications to determine whether it is suitable for your particular installation.
Is this pump suitable for saltwater environments?
The listed materials include a UV-stabilized ABS polymer housing and 316 stainless steel fasteners. Actual suitability and service life depend on the complete pump construction, installation location, operating conditions, and maintenance. Confirm the manufacturer's guidance for your intended environment.
Will this pump fit my yacht or sailboat?
It may suit a compatible yacht or sailboat sanitation system. Check the electrical voltage, hose connections, mounting dimensions, available clearance, and system requirements before ordering.
What are the dimensions of the pump?
The listed overall dimensions are approximately 290 × 120 × 95mm. Allow additional clearance for plumbing, electrical wiring, maintenance, and removal.
Is a macerator sewage pump the same as a bilge pump?
No. A bilge pump is designed to remove accumulated water from a boat's bilge, while a macerator sewage pump is intended for wastewater handling in compatible sanitation systems. They serve different purposes and should not be substituted for one another.
What flow rate and pumping height does this pump provide?
The available product information does not specify the flow rate or maximum pumping head. Contact AirowMarine for the applicable technical specifications before selecting the pump for a system with defined performance requirements.
Before Ordering
- Select the correct 12V or 24V version.
- Confirm the 38mm inlet and 25mm outlet connection requirements.
- Check the available installation space against the listed pump dimensions.
- Confirm suitability for your vessel's sanitation system.
- Verify flow rate, maximum head, rated current, wiring, fuse requirements, and other specifications with the manufacturer where required.
If you are unsure whether this pump is compatible with your boat, contact sales@airowmarine.com with your vessel model, electrical voltage, existing hose sizes, and installation details.
Shipping Information
Shipping charges are calculated at checkout based on the destination, package weight, and available shipping service. Delivery times may vary depending on the destination and selected shipping method.
For product compatibility or shipping questions, contact sales@airowmarine.com before ordering.
Product Compatibility Disclaimer
Boat types and marine applications are provided as general compatibility references and do not guarantee fitment. Always verify the electrical, plumbing, performance, and installation specifications before purchase.
AirowMarine is an independent marine equipment seller and is not affiliated with or endorsed by any boat manufacturer.






