Product Overview
The Tomahawk Power TW4H is a 4 inch Honda-powered industrial trash water pump designed for heavy-duty dewatering, flood control, agriculture, construction, municipal maintenance, and industrial water removal. With a Honda GX390 engine, 423 GPM discharge capacity, 4 inch suction and discharge ports, and solids handling up to 2 inches, this pump is built to move large volumes of debris-filled water quickly. This selected variant is the pump only option with no hose kit included.
Key Features:
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4 Inch Industrial Trash Pump: Designed for 4 inch suction and discharge hoses for high-volume dirty water transfer.
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Honda GX390 Engine: Trusted Honda engine power supports reliable operation and reduced downtime on demanding jobsites.
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423 GPM Discharge Capacity: Moves up to 25,380 gallons per hour for fast dewatering and water transfer.
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Handles Solids Up to 2": Built for trash and debris-laden water with solids handling up to 2 inches in diameter.
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Trash Centrifugal Self-Priming Pump: Designed for dirty water applications where quick priming and strong transfer performance are needed.
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82 Ft Total Head Lift: Supports pumping water to higher discharge points within the pump's operating limits.
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26 Ft Suction Head Lift: Helps draw water from trenches, basements, ditches, canals, ponds, and flooded areas.
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36 PSI Maximum Pressure: Provides strong discharge pressure for high-volume transfer applications.
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Durable Pump Construction: Rigid mounted cast iron volute with stainless wear plate and conical cast iron impeller supports tough jobsite use.
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Automatic Low Oil Shutdown: Helps protect the engine by shutting down when oil levels are too low.
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Portable Steel Frame: Compact frame supports transport, storage, and placement on construction sites, farms, and emergency response areas.
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Selected No Hose Kit Variant: This version includes the TW4H pump only; hoses are not included with the selected variant.
Technical Specifications:
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Model: TW4H
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Product Type: 4 Inch Honda Powered Trash Water Pump
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Brand: Tomahawk Power
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Selected Variant: Add Hose Kit: No
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Engine: Honda GX390
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Displacement: 389cc
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Pump Type: Trash centrifugal self-priming
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Volute: Rigid mounted cast iron with stainless wear plate
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Impeller: Conical cast iron
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Priming Time: 150 seconds at 16.4 ft
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Discharge Capacity: 423 gal/min
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Water Transfer Capacity: 25,380 gal/hr
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Suction Port Diameter: 4"
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Discharge Port Diameter: 4"
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Total Head Lift: 82 ft
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Suction Head Lift: 26 ft
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Maximum Pressure: 36 PSI
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Solids Handling: Up to 2" diameter solids
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Fuel Capacity: 1.6 gal
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Runtime: 1.5 hours at max discharge
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Dry Weight: 148 lb
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Dimensions: 28.9" L x 21.1" W x 22.2" H
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Hose Compatibility: 4 inch suction and discharge hoses
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Hose Kit: Not included with selected No Hose Kit variant
Package Includes:
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TW4H Water Pump: 4 inch Honda-powered industrial trash water pump.
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Hose Kit: Not included
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Manuals & Guides: Follow Tomahawk's available operations manual and parts information for setup, operation, and maintenance.
Applications:
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Construction Site Dewatering: Removes water from trenches, foundations, excavations, tunnels, basements, and active jobsites.
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Stormwater & Flood Control: Helps move floodwater, runoff, and debris-filled water after heavy rain or emergency weather events.
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Agriculture & Irrigation: Transfers water from rivers, ponds, canals, reservoirs, and tanks for irrigation, livestock watering, or field drainage.
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Municipal & Utility Work: Supports storm drain work, culvert drainage, public works maintenance, water main repairs, and emergency response tasks.
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Industrial & Mining Use: Moves slurry-style water, sediment-laden runoff, and debris-filled water from industrial sites, pits, and quarry applications.
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Pond, Lake & Canal Management: Helps transfer water during maintenance of ponds, canals, retention basins, drainage ditches, and water features.
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Disaster Relief Operations: Useful for crews clearing large volumes of dirty water after storms, hurricanes, floods, or site emergencies.
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Large Facility Cleanup: Supports washdown, drainage, and water transfer work where high-capacity trash pump performance is required.
Operation & Use Notes:
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Prime Before Operation: Fill the pump housing with water before starting. Never run the pump dry.
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Use Proper Hose Size: Use compatible 4 inch suction and discharge hoses with proper fittings, clamps, and seals.
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Suction Hose Requirement: Use a reinforced suction hose rated for pump intake use. Standard discharge hose may collapse under suction.
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Trash Pump Use: This pump is designed for dirty water mixed with small solids such as mud, leaves, gravel, sand, and debris, but it should not be used for heavy sludge, corrosive liquids, fuel, flammable liquids, or chemicals.
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Strainer Use: Use the proper suction strainer to help keep oversized debris from entering the pump and damaging internal components.
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Solids Limit: Do not exceed the listed 2 inch solids handling capacity.
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Head & Lift Limits: Keep suction lift and discharge elevation within the listed pump limits for best performance.
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Cleanout & Service: Shut down the pump, allow it to cool, and disconnect it safely before clearing debris or servicing the pump body.
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Engine Safety: Follow Tomahawk and Honda engine instructions for fuel, oil, startup, shutdown, storage, and maintenance.
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Outdoor Use Only: Gas-powered pumps must be operated outdoors in a well-ventilated area away from doors, windows, vents, and occupied spaces.
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Carbon Monoxide Safety: Never operate a gas engine indoors, in a garage, basement, crawlspace, enclosed trailer, or partially enclosed area because of carbon monoxide danger.
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After Use: Drain the pump housing and hoses after operation, especially before storage or freezing conditions.
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California Proposition 65: This product carries a California Proposition 65 warning.
Frequently Asked Questions
Q. What is the Tomahawk TW4H used for?
The TW4H is used for heavy-duty dirty water transfer, construction site dewatering, flood control, agriculture, municipal maintenance, industrial cleanup, pond and canal management, and disaster relief pumping.
Q. How much water can the TW4H move?
Tomahawk lists the TW4H with a discharge capacity of 423 gallons per minute, or 25,380 gallons per hour.
Q. What engine does the TW4H use?
The TW4H uses a Honda GX390 engine with 389cc displacement.
Q. What makes this a trash pump?
Trash pumps are designed to handle dirty water mixed with small solids such as mud, leaves, gravel, sand, and debris. Tomahawk lists the TW4H as capable of handling solids up to 2 inches in diameter.
Q. What is the total head lift?
Tomahawk lists the total head lift at 82 feet.
Q. What is the suction head lift?
Tomahawk lists the suction head lift at 26 feet.
Q. What is the fuel capacity?
The TW4H has a listed fuel capacity of 1.6 gallons.
Q. How long will the TW4H run?
Tomahawk lists runtime at 1.5 hours at max discharge.
Q. Can I run this pump indoors?
No. Gas-powered water pumps must only be operated outdoors in a well-ventilated area. Never run a gas engine indoors, in a garage, basement, crawlspace, enclosed trailer, or partially enclosed area because of carbon monoxide danger.
Why We Like It:
The Tomahawk Power TW4H is built for high-volume, heavy-duty pumping jobs where a smaller transfer pump will not keep up. The 4 inch inlet and outlet, Honda GX390 engine, 423 GPM discharge capacity, 2 inch solids handling, 82 ft total head lift, 26 ft suction head lift, cast iron volute with stainless wear plate, conical cast iron impeller, and portable frame make it a strong fit for contractors, farmers, municipalities, industrial crews, and emergency cleanup teams handling debris-filled water.
