RAM Pumps by EMS

Filter Press Feed Pumps/Grit Removal/Primary Sludge Transfer Pumps/Food Waste Pumps

Often referred to as plunger, reciprocating or piston pumps, EMS RAM PUMPS offer a greater suction lift for dredging and pumping sewage, waste water, filter press feed, backwash and grout or effluent.

EMS Robust Pumps for Filter Press Feed, Sludge and Slurry Transfer, Grit, and Food WasteThe 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 PUMPS are available in a variety of materials to address "target applications" of grit & sand removal, dredging, grout pumping, primary sludge transfer, filter press feed, kaolin and clay pumping.


EMS Pump Size Chart

Click on the Model# for dimensional drawings.



Flow lit/min

Pressure range (bar)

CVR200 Mechanical 60-300 0-4
VRM175 Mechanical 90-210 0-5
VRH175 Hydraulic 90-210 0-50
VRM250 Mechanical 240-420 0-5
VRH250 Hydraulic 240-500 0-50
VRH350 Hydraulic 500-900 0-30
VRH400 Hydraulic 900-1200 0-30
VRH500 Hydraulic 1200-1800 0-30



The heavy duty, hydraulically-driven VRH is the most powerful pump in the range. Available in sizes shown above, the VRH line of EMS RAM PUMPS is suitable for pumping high solids viscous material and features large gravity ball type sludge check valves.


  • Ideal for heavy duty sludge transfer
  • Tungsten carbide coated sludge ram
  • Suitable for continuous use
  • Slow speed operation
  • Huge suction draws thick sludge
  • Numerous hydraulic and electronic control designs & options
  • Up to 500m delivery head
  • Up to 30 lit/sec flow
  • Minimal maintenance
  • Duplex and triplex options with near laminar flow



The mechanically-driven VRM is one of the most popular pumps in the range. The mechanical arrangement features vee belts, a reduction gearbox and a crankshaft final drive providing a basic, simple to understand driveline. VRM Pumps are available in various sizes.

Sludge non-return valves come in various designs and can be positioned in-line or at right angles to each other allowing the pump to be installed in tight spaces. All VRM pumps create a suction vacuum equivalent to 9 meters (30 ft) static suction lift.


    • Ideal for heavy duty desolating
    • Hard wearing tungsten carbide coated ram
    • Suitable for continuous use 24/7
    • Slow speed, quiet operation
    • Huge suction draws thick sludge up to 15%ds
    • Simple construction
    • Up to 50m (165 ft) delivery head
    • Up to 6.5 lit/sec (103 gpm)
    • Minimal maintenance

    Slurry Pumping Applications

    • Abrasive/Aggressive
    • Biogas Feed
    • Cement
    • Ceramic
    • Clay
    • Delicate Shear Sensitive
    • De-sludging
    • Dredging
    • Filter Press Feed Pump
    • Food Waste Pump
    • Grit & Sand
    • Grout
    • High Pressure
    • High Solids
    • High Viscosity
    • Kaolin
    • Mining/Ore
    • Primary Sludge Transfer
    • Tailings: Coal, Ore

    Pump Capabilities

    • Flow Rates: 15-475 GPM /(3-108 m3/hr)
    • Suction Lift: 9 meters /(30 feet)


Filter Press Feed Pump

Valencia, California

EMS Filter Press Feed Pump


Factory Testing an EMS Filter Press Feed Pump

EMS Filter Press Feed Pump Factory Test


Grit Removal

Grit Removal Pump
Pump for Grit Removal


Primary Sludge Transfer

Primary Sludge Transfer Piston Pump by EMS
Primary Sludge Transfer Ram Pumps by EMS


Food Waste Pump

Installed Spring 2017

EMS Food Waste Pump


Contact us for more information for your pumping solution: (770) 592-8664 or info@universalpumping.com


© Universal Pumping. A Division of Universal Filtration & Pumping Solutions Inc. All Rights Reserved.
625 Apache Trail, Woodstock, Georgia 30189 USA. Phone (770) 592-8664

Email us at info@universalpumping.com for more information. Follow us on: LinkedIn

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