Hammelmann GmbH

Hammelmann GmbH, headquartered in Oelde, Germany, has manufactured high-pressure plunger pumps and application systems for over 75 years as part of the Interpump Group. The company's HDP series vertical plunger pumps span from compact units rated at 18.5 kW to large 1,100 kW models, delivering operating pressures up to 4,500 bar and flow rates approaching 3,000 liters per minute. Key models include the HDP 10 through HDP 1200 range, with 3-cylinder configurations for smaller units and 5- or 7-cylinder designs for the highest-capacity pumps, all featuring solid ceramic or tungsten carbide plungers, stainless steel pump heads, hermetic bellows seals, and FEM-optimized crank sections for continuous-duty operation. For sewer and pipe cleaning, the HDP 146 L/S and HDP 196 L/S horizontal and vertical models deliver 160–230 bar at 270–605 liters per minute with diesel or electric drive options. The AQUAJET line packages Hammelmann pumps into diesel-driven mobile units for on-site high-pressure cleaning, available in road-going and stationary configurations with Super-Silent noise reduction and Tier 5 emissions compliance. The THERMOJET hot water unit provides cleaning capability up to 95 degrees Celsius. Application accessories include PIPEMASTER rotating hose devices for pipe interior cleaning, TURBOJET turbo nozzles for blocked pipes, MASTERJET flange cleaners, AQUAMAT tank cleaning devices, and a full range of sewer cleaning nozzles for pipes from 200 mm to 2,000 mm diameter. The company serves water supply, sewer maintenance, industrial cleaning, surface preparation, and descaling markets through 40 international agencies.