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    Sludge / Sewage Diaphragm Pumps

    Gas Engine, Electric or Air Motor Drive

    These 3" Self-Priming Diaphragm Pumps feature 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud Pumps or Sludge Pumps, diaphragm pumps are designed to pump mud, slurry, sewage and thick liquids that have the ability to flow. Industrial Duty. Suction and discharge port size cannot be reduced.

    • Sand Cast Aluminum Construction for Portability & Durability
    • Thermoplastic Rubber Diaphragm
    • 1-5/8" Diameter Solids Handling Capability
    • Modular Component Design Permits Easy Maintenance & Cleanout; Suction Strainer Included
    • Primes to 20' After Initial Prime
    • Delivers up to 88 GPM; Maximum Temperature is 180 Deg. F.
    • Gas Engine, Electric or Air Motor Drive
    • Wheel Kit with 10" Semi-Pneumatic Transport Wheels for Portability


    DO NOT USE in explosive atmosphere or for pumping volatile, flammable liquids.

    Manufacturer: Gorman Rupp Pumps
    Part No. Catalog Pump Type Body Material Inlet Size Outlet Size Max Diam. Solids Inlet Connection Outlet Connection Max GPM Max Temp (Deg. F) Self-Priming Pump Mfg Drive Engine Mfg Engine HP Price
    Picture of Sludge Diaphragm Pump, 3", Less Engine, 88 Max Flow
    SKU: GR3354-K6 Catalog: E3128 Pump Type: Diaphragm Body Material: Aluminum Inlet Size: 3" Outlet Size: 3" Max Diam. Solids: 1-5/8" Inlet Connection: FPT Outlet Connection: FPT Max GPM: 88 Max Temp (Deg. F): 180 Self-Priming: Yes Pump Mfg: Gorman-Rupp Pumps Drive:   Engine Mfg:   Engine HP:   Price: $1,733.00 / EA
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    Picture of Sludge Diaphragm Pump, 3", Less Motor, 58 Max Flow
    SKU: GR3355-K6 Catalog: E3128 Pump Type: Diaphragm Body Material: Aluminum Inlet Size: 3" Outlet Size: 3" Max Diam. Solids: 1-5/8" Inlet Connection: FPT Outlet Connection: FPT Max GPM: 58 Max Temp (Deg. F): 180 Self-Priming: Yes Pump Mfg: Gorman-Rupp Pumps Drive:   Engine Mfg:   Engine HP:   Price: $1,802.00 / EA
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    SKU: GR337H-96 Catalog: E0725 Pump Type: Diaphragm Body Material: Aluminum Inlet Size: 3" Outlet Size: 3" Max Diam. Solids: 1-5/8" Inlet Connection: FPT Outlet Connection: FPT Max GPM: 88 Max Temp (Deg. F): 180 Self-Priming: Yes Pump Mfg: Gorman-Rupp Pumps Drive: Gas Engine Engine Mfg: Honda Engine HP: 5.5 Price: $2,475.00 / EA
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