Roper Pumps 2835 Series

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Roper Pumps 2835 is a unique gear pump built for handling high-viscosity fluids at high shaft speeds. The external helical gear design and extra-large ports allow the Roper 2835 pump to easily handle even winter-thickened feed supplements. A highly viscous feed can be pumped at speeds of up to 1800 RPM.


Design Advantages

  • Operates at standard motor speeds for viscous fluids up to 100,000 SSU
  • Low horsepower requirements allow use of low-cost drivers
  • Angled gear arrangement for pumping viscous fluids easily
  • Built-in relief valve helps protect pump from excessive discharge pressure
  • Precise tolerances for maximum efficiency
  • Quiet and smooth-running gears

Available Options

We customise pumps according to your specific application. Get in touch with us today to get a complete list of your options.

  • Option for gas engine drive
  • Option for direct coupling with electrical motor
  • Integral pressure relief valve
  • Sealing options: lip seal, mechanical seal, packing
  • Materials: gears, bearings, shafts, housing
  • Baseplates
  • Spare parts

Key Specifications

  • Flow: Up to 11.3 GPM (42.8 lpm)
  • Pressures: Up to 75 PSI (5.2 bar)


Mixing, blending, recirculating, fixed and mobile transfer of:

  • Molasses
  • Roofing compounds
  • Honey
  • Feed supplements


A gear pump creates flow by carrying fluid between the teeth of two meshed gears. One gear is driven by the drive shaft, which in turn drives the other gear. Pumping chambers are formed between the teeth and are enclosed by the pump housing and side plates.
A partial vacuum is created at the inlet of the pump as the teeth unmesh. Fluid starts to flow in at this point and fills the space/vacuum. The fluid is then carried around the outside of the gears. As the teeth mesh again at the outlet, the fluid is forced out.

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