DatasheetAppalachian 65-250C High Head Self-Priming Surface Pump – 6″ x 5″ / 2290 GPM / 250 HP
DAE Pumps Appalachian 65-250C High Head Self-Priming Surface Pump is a heavy-duty centrifugal dewatering self-priming pump with a 6.5-inch intake and a 5-inch discharge. At a maximum flow rate of up to 2290 GPM, the Appalachian 65-250C diesel engine provides 250 HP. The 23″ impeller with 69% efficiency at B.E.P. can pass solids up to 0.8-inches. These heavy-duty pumps extend a range of industries from applications like dewatering mines and construction sites, removing floodwater, and a variety of other municipal applications. The Appalachian pump provides the non-clogging performance, reliability, and ease of use you need.
The Appalachian 65-250C surface pumps comprise an air separator unit and a vacuum pump, offering rapid automatic priming. Even with suction heights of several feet, these tools rapidly evacuate the air from the suction pipe and start to pump. In addition, the semi-open impeller is suitable for pumping liquids with solids in suspensions.
The Appalachian 65-250C is part of the Appalachian Series of self-priming surface pumps, which offer a variety of sizes, flow rates, speeds, and more to match your needs.
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Appalachian 65-250C High Head Self-Priming Surface Pump
Pump Specifications
Pump End: DAE Pumps MCL-I5617C
Pump Size: 6×5 inches (150×125 mm)
Max Flow: 2290 US GPM (520 m3 /h)
Max Head: 550 feet (168 m)
Solids Size: 0.8 inches (21 mm)
Mechanical Seal: Single mechanical seal 2.75”
Lip Seals: CR type, single lip, Buna-N (Bearing & SAE Cover) and Viton(Stuffing box)
Non-Drive End Bearing: Single row ball bearing 6314
Drive End Bearing: Duplex angular contact bearing 7316
Air/Water Chamber: Steel material and designed to separate air and water before entering into vacuum pump suction hose.
Discharge Non Return Valve: Swing type, cast iron with Buna-N disc (Viton optional)
Gasket: Aramid Fiber w/ EPDM
O Ring: Buna-N
Engine Specifications
Engine Model: Cummins B6.7
Rated Power At Speed: 250 HP @ 2000 RPM
Displacement: 408 Cu.In. (6.7 Liters)
EPA Tier: Tier 4 Final/Stage V
Fuel Tank: 102 U.S. Gallons (388 Litres) Larger volume fuel tank is available.
Full Load Operating Time: 6.2 Hours
Starter: 12 Volts Electric
Control Panel: Murphy, Controls Inc, Deepsea, Kensho, Lofa
Applications
- Construction Site
- Mining
- Industrial
- Municipalities
- Dewatering
- Civil Works
- Agricultural
- Oil & Gas
- Flood Controls
How the Appalachian Series Supports Field Operations
The Appalachian Series self-priming surface pumps are built for high-demand environments that require strong suction lift, rapid priming, and reliable water movement. Their high flow capacity, solids-handling capability, and rugged construction make them suitable for industries that require continuous dewatering, fluid transfer, and emergency support. With flexible mounting options and powerful performance, these pumps operate effectively across a wide range of field conditions.
Common applications include:
Oil and Gas Pipeline Operations
The Appalachian Series supports pipeline workflows where controlled water removal is critical. These pumps assist with dewatering pipelines to protect internal surfaces, manage ballasting during vessel loading, and supply a steady flow for hydrostatic testing, drilling, and flushing.
Mines and Quarries
Mining and quarry environments benefit from the pump’s robust solids-handling capability and high flow capacity. They excel in post-dredging dewatering, washing, silt and sludge removal, and general water management in challenging, debris-rich areas.
Municipal Services
Municipal operations rely on Appalachian pumps for sewage bypass, wastewater movement, and emergency treatment support. Their stable performance ensures uninterrupted water handling during scheduled maintenance or unexpected system disruptions.
Construction and Infrastructure Projects
Construction sites require continuous dewatering to maintain safe and dry work zones. Appalachian pumps remove water from excavations, trenches, and low-lying areas, enabling uninterrupted progress across large-scale infrastructure projects.
Industrial Operations
Industrial facilities depend on consistent pump performance for effluent handling, drainage, and temporary water management. Appalachian pumps deliver reliable wastewater and process-fluid movement while supporting operations that demand durability and uptime.
Civil Works
Civil engineering projects rely on dewatering at every stage. Whether for roadworks, dams, bridges, airports, or building foundations, the Appalachian Series delivers steady water removal to maintain productivity and site safety.
Flood Control and Emergency Response
The mobility and high performance of the Appalachian pumps allow rapid deployment in flood emergencies. They help quickly remove accumulated water, restoring safe access and reducing the impact of flooding.
Farm Irrigation
Agricultural operations use the Appalachian Series as a dependable irrigation pump. These pumps move water from canals to sprinkler systems and can be repositioned easily across fields, providing flexible, efficient irrigation support.
Maintenance and Repair
The Appalachian Series is engineered for demanding field environments where pumps must handle high flow rates, abrasive debris, and frequent site relocation. Routine maintenance helps preserve strong suction lift, rapid priming, and dependable long-term performance across construction, mining, municipal, and emergency response applications.
Key components to inspect regularly
- Impeller condition and clearance
- Wear plates and internal surfaces exposed to abrasion
- Seal integrity and any early signs of leakage
- Mounting stability and vibration isolation points
Durability advantages
- Semi-open impeller design that reduces clogging in debris-rich environments
- Heavy-duty construction that withstands abrasive materials and rough handling
- Vibration isolation mounts that improve stability and protect internal components
Serviceability benefits
- Easy access to wear parts for quick field maintenance
- Fast inspection of impellers and seals without extended downtime
- Digital controller support for monitoring performance trends and identifying early issues
Because these pumps often operate in high-pressure, time-critical environments, access to dependable support is essential. Replacement parts, service kits, and technical assistance are readily available to help crews minimize downtime and maintain reliable performance during dewatering, flood control, and emergency operations.
Accessories
Appalachian Series self-priming surface pumps can be equipped with a full range of accessories that improve dewatering efficiency, monitoring accuracy, and overall field performance. Each accessory integrates seamlessly with the pump’s high-flow output and mobile design, ensuring reliable operation across construction sites, mining environments, municipal work zones, and emergency response situations.
Key accessory options include
- Slurry Hoses: For transferring solids-laden sewage, slurry, and abrasive wastewater
- DAE Pumps UFM Doppler Ultrasonic Flow Meter: For accurate, real-time flow monitoring without pipe intrusion
- Flow Meters: Help operators maintain stable system performance and verify pumping efficiency
- DAE Pumps Pipe Floats and Hose Floats: Keep discharge and suction lines buoyant and properly aligned in waterborne or semi-submerged applications
- Hydraulic Power Units (DAE Pumps HPU1000): Provide dependable hydraulic support where auxiliary power is required
- Mobile Diesel Generators (DAE Pumps Horton Series): Ensure uninterrupted pump operation in locations without grid access
With accessories and replacement components readily available for quick global delivery, crews can keep their systems running with minimal interruption.
Slurry Hoses
Flow Meters
Hose & Pipe Floats
Hydraulic Power Units
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Appalachian 65-250C High Head Self-Priming Surface Pump