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Edelmann & Associates, Inc. is a factory authorized distributor of Trillium Flow Technologies for customers in Minnesota, Western Wisconsin, North Dakota, and South Dakota. We carry the Wemco Self Primer and Roto-Jet® lines of specialty centrifugal pumps,  sometimes compared to Gorman-Rupp Pumps.

The Wemco Self Primer trash pump is designed for moving liquids with solids, and is built with many robust features and options. Constructed with durability in mind, Wemco pumps utilize ductile iron casings and fill port cover, stainless steel shaft, and silicon carbide seal faces, with time saving features such as tool-less and shim-less impeller adjustment. It is available with maximum head up to 129′, and up to 3,200 gpm and can accommodate solids sizes up to 3″.

Roto-Jet® high pressure pitot tube pumps are designed for a wide range of operating specifications. This heavy duty high pressure pump is manufactured in models that can accommodate pressure up to 2,250 psi, 750 gpm, 5,200′ of head, operating temperatures up to 550°F, and maximum speeds of 6,321 rpms. The API 610 RO-FT pump meets all requirements for refining, petrochemical and chemical.

For quotes and selection assistance on Wemco and RotoJet, please fill out the form on the right>>>

Trillium Flow Technologies Selection

WEMCO SELF PRIMING Solid Handling Self Primer Pumps

WEMCO is the US brand market-leader for vortex and screw centrifugal pumps that are reliable, rugged & dependable.  Wemco serves municipal and industrial industries in water and wastewater, food and beverage, solids and high grit applications, chemical, and general industrial markets.

WEMCO Torque-Flow Pump is the industry’s toughest grit-handling vortex pump, it easily moves pipe size solids without clogging. Abrasion resistant construction – a robust solids handling pump.

WEMCO Hydrogritter removes and dewaters grit from primary sludge or influent and features an enduring operational life of over 25 years.

WEMCO screw-flo centrifugal pump provides clog-resistant movement of solids, fibrous and stringy materials. The additional head-capacity helps push through any partial blockages.

  • Ductile Iron Casing
  • Ductile iron fill port cover
  • Hi-Chrome and CD4MCU fitted options
  • Stainless Steel 17-4PH Shaft
  • Tool-less impeller adjustment
  • Passes stated solid size
  • Shim-less impeller adjustment
  • Solid silicon carbide seal faces
  • 66 month warranty
  • Pump interchangeability
  • Max Head: 129'
  • Max Flow: 3,200 gpm
  • Max Solid Size: 3

ROTO-JET High Pressure Pitot Tube Pumps

Roto-Jet pumps meet the demands of low-flow, high-head applications.  Roto-Jet high pressure pumps add energy to the fluid via the rotor, and the stationary pitot tube converts the fluid velocity energy into static pressure.  The advantages over a standard centrifugal pump include:

  • No external lube system required 
  • No wear rings or close running clearances  
  • Pulsation free flow over the entire head-flow curve 
  • Reduced life cycle cost by optimizing hydraulic efficiency 
  • Process seals exposed only to suction pressure for maximum seal life 
  • High heads achieved in a single stage at low operating speeds compared to other low-flow, high-head pumps
  • Designed and manufactured to achieve a broad operating range without creating damaging hydraulic forces in the pump
  • Stationary in the 12 o’clock position to facilitate venting of the rotor during start-up.
  • Max Capacity: 750 gpm
  • Max Head: 5,200'
  • Max Pressure: 2,250 psi
  • Max Temp: 550°F
  • Max Speed: 6,321 rpm
  • API Options
weir roto jet pump


The Roto-Jet® RO-FT API 610 pump is rugged, reliable and robust designed for refining, petrochemical and chemical processing.

  • Designed specifically for demanding low-flow high-head services, this pump fully meets the requirements of API 610.
  • Increase Mean Time between Failure with improved mechanical seal and bearing life
  • Decrease operational and maintenance costs with this most economical pump for low-flow high-head applications.

Additional Resources:

API 610 Roto-Jet Pump for Reliability and Robust Performance


  • Max Capacity: 450 gpm
  • Max Head: 5,000'
  • Max Pressure: 300 psi
  • Max Temp: 550°F
  • Max Speed: 6,000 rpm
  • API 610

At Edelmann & Associates, we know Trillium Flow Technologies


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