Ram Pumps, often referred to as plunger, reciprocating, piston pump, or ram pump they offer a greater suction lift for dredging and pumping sewage, waste water, backwash and grout or effluent. The Positive Displacement EMS RAM PUMPS are robustly designed and constructed of S.G. iron castings with stainless steel features for the most aggressive environments. Our Rams are available in a variety of materials to address our “target applications” of grit & sand removal, dredging, grout pumping, primary sludge transfer, coal slurry, fly ash slurry, digester feed, and filter press feed.
Click on the Model # for dimensional drawings.
Model | Drive | Flow GPM (lit/min) | Pressure range PSI (bar) |
CVR200 | Mechanical | 15-80 (60-300) | 0-60 (0-4) |
VRM175 | Mechanical | 24-55 (90-210) | 0-75 (0-5) |
VRH175 | Hydraulic | 24-55 (90-210) | 0-725 (0-50) |
VRM250 | Mechanical | 65-110 (240-420) | 0-75 (0-5) |
VRH250 | Hydraulic | 65-135 (240-500) | 0-725 (0-50) |
VRH350 | Hydraulic | 130-240 (500-900) | 0-435 (0-30) |
VRH400 | Hydraulic | 240-320 (900-1200) | 0-435 (0-30) |
VRH500 | Hydraulic | 320-475 (1200-1800) | 0-435 (0-30) |
Available in various sizes the heavy duty, hydraulically driven VRH ram pump is the most powerful pump in the range. Sludge valves are large gravity ball type and are suitable for pumping high solids viscous material.
Available in various sizes the mechanically driven VRM ram pump is one of the most popular pumps in the range. The mechanical arrangement features V-belts, a reduction gearbox and a crankshaft final drive providing a basic, simple to understand driveline.
Sludge non-return valves come in various designs and can be positioned in-line or at right angles to each other allowing the ram pump to be installed in tight spaces. All VRM pumps create a suction vacuum equivalent to 9 meters (30 ft) static suction lift.