30 GPM General Fluid Transfer Pump – Tri-Rotor Model 20D

  • Tri-Rotor Solid Head Pump Model 20D
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Tri-Rotor Pump model 20D, along with model 20CP, is the smallest in the family of Tri-Rotor solid head pumps that provide constant flow rates.  This low cost pump is perfect for simple fluid transfer such as loading and unloading drums, totes, tanks, and trailers.  The pump serves a wide range of industrial markets and applications.  Examples of the 20D model’s diverse applications include pumping phosphate ester, paraffin wax, oil/water emulsion, treated brine, hot turbine oil, and neat cement slurry.

The pump is designed with side suction and top discharge threaded ports and is available in both clockwise (CW) and counterclockwise (CCW) rotations for pump installation flexibility.  Materials of construction for the 20D model include Iron Fitted, All Iron, Bronze Fitted, or All Bronze configurations.  One feature of the pump is that the shaft housing (or stuffing box) is integrated into the pump body, reducing the number of parts and the time required for maintenance.

Specifications of Tri-Rotor Pump Model 20D:
  • Flow rate:  4 to 30 GPM
  • Viscosity range:  4 to 21,625 cPs (40 to 100,000 SSU)
  • Inlet and Discharge Port size:  1-½” NPT Ports (std.) or 1-¼” NPT Ports
  • Operating temperature range:  -40 °F to 650 °F
  • Maximum operating pressure:  125 PSI
  • Pump displacement per revolution:  0.0176 gal/rev
  • Pump speed range:  240 to 1800 RPM
  • Solids passage available:  0.023 in.

Do you know your system parameters and would like us to quote the best pump model?  Please fill out the Pump Systems & Analysis Sheet.
Configure Your 20D Solid Head Pump
Part Number:
20D
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As with all Tri-Rotor pump models, the 20D is available with a Steam Jacketed option for fluids requiring to be heated or cooled in order to be pumped.  Tri-Rotor also offers an interesting option for its’ 20D solid head design: a Reduced Stroke Pump Head.  With this option, the pump can be designed to target a specific flow rate at a percentage of full flow.
 
Other Options for Pump Model 20D:
  • Other Materials of Construction options:
    • Shaft:  Steel (std.), Stainless Steel, or Hardened Stainless Steel
    • Piston:  Iron (std.), Bronze, or Steel
    • Body Gasket options:
      • Standard  {to 250 °F (121 °C)}
      • Heat Resistant  {to 650 °F (345 °C)}
  • Shaft length:  “M” (8-3/8”) (std.), “T” (8-3/8”), “MO” (10-13/16”), or “BD” (10-13/16”)
  • Shaft seal and lubrication:
    • Packing options (grease fitting provided):
      • Teflon Impregnated Packing (std.)  {to 550 °F (288 °C)}
      • FDA Food Grade (PTFE) Packing  {to 500 °F (260 °C)}
      • Heat Packing  {to 650 °F (345 °C)}
      • Zero-Leak #3 (Beaded) Packing  {40 °F to 500 °F (-40 °C to 260 °C)}
      • Zero-Leak #30 (Non-Beaded) Packing  {40 °F to 500 °F (-40 °C to 260 °C)}
    • Mechanical seal options (grease fitting provided):
      • Type 1 Mechanical Seal – Viton  {-40 °F to 300 °F (-40 °C to 150 °C)}
      • Type 1 Mechanical Seal – Buna  {10 °F to 180 °F (-10 °C to 80 °C)}
      • Type 9 Mechanical Seal – PTFE  {to 320 °F (160 °C)}
  • Shuttle design:  Formed Shuttle only
  • Relieved Rotor Group (for higher viscosities: >10,000 SSU/2,150 cPs)
  • Sanitary Preparation of pump internal components for food applications
  • Grease feeder available for shaft lubrication
  • Exterior Protection:  Orange Paint (std.), Black Paint, White Lacquer, or 316SS Epoxy Coating
The bare weight of the pump is approximately 18 lbs.  The estimated shipping weight is 24 lbs.

Besides offering just a bare pump only for the Model 20D, Tri-Rotor offers a complete mounted pump system, including motor drive assembly and mounting.  Replacement parts for all Series 20 pumps can be found here.