Other Options Available for Your Tri-Rotor Pumps

Material Options

• Pump:  Cast iron (std.) or bronze
• Bushing:  Iron (std.) or bronze
• Piston:  Cast iron (std.), steel, or bronze
• Rotor:  Cast iron (std.) or bronze
• Shuttle:  Cast iron (std.) or bronze
• Seal Gland:  Cast iron (std.) or bronze
• Shaft:  Steel (std.), stainless steel, or hardened stainless steel

Gaskets – Body and Head

• Standard                   to 250 °F (121 °C)
• Heat Resistant          to 650 °F (345 °C)

Paint or Coating Options

• Orange paint (std. for most pumps)
• Black paint (std. for asphalt pumps)
• White lacquer (std. for food pumps)
• 316 Stainless steel epoxy coated (std. for edible oil pumps)
• Unpainted

Relieved Rotor Group

The relieved rotor group option is required for fluid viscosities of 10,000 SSU (2,150 cPs) and above.  Relieving the rotor group entails machining each pumping member (the rotor, piston, and shuttle) a few thousandths of an inch smaller than standard, thus increasing the clearances between these members.  Standard Relieving (for viscosities from 10,000 SSU to 100,000 SSU) ranges from machining approximately 0.004” per part for Series 20 pumps to 0.009” per part for Series 200 and 220 pumps.  Special Relieving (for viscosities above 100,000 SSU) ranges from machining approximately 0.006” for Series 20 pumps to 0.022” for Series 200 and 220 pumps.

Rotation

All Tri-Rotor pumps are available with either clockwise (CW) or counter clockwise (CCW) rotation, when viewed from the shaft end of the pump.  This allows the customer to select the best Tri-Rotor pump for installation based on the design of their piping system.

Sanitary Preparation

Tri-Rotor offers their pumps to be sanitized at the factory prior to shipment for food related applications.  All pump parts are soaked and thoroughly washed with a sanitizer specially designed for food dispensing equipment.  The parts are then allowed to air dry before assembly.  The pump is performance tested on clean vegetable oil, after which the pump is emptied and the ports are sealed.

Shaft Length Options

Tri-Rotor offers multiple pump shaft lengths to accommodate different mounting and drive application needs.  These shaft lengths are differentiated from each other by letter (or letters) and are available for every pump series.  Please refer to shaft length conversion chart for more details.

• “M” Shaft – standard shaft length for all Tri-Rotor pumps
• “T” or “TS” Shaft – shaft length for truck-mounted pumps
• “BD” Shaft – typical shaft length for belt-driven pumps
• “MO” Shaft – typical shaft length for applications requiring a longer shaft length and requires an outboard bearing support
• “OSBD” or “OSMO” – “Old Style” (Obsolete) versions of the BD and MO shafts

Tri-Rotor also offers custom length shafts as required for the application at no additional cost.

Shaft Lubrication

• Grease feeder
• Oil cup

Shaft Seal Options

Standard Packing (PTFE Impregnated)

• Temperature range       to 550 °F (288 °C)
• pH range                       3 to 12

Teflon Packing

• Temperature range       to 500 °F (260 °C)
• pH range                       0 to 14

Shuttle design

• Block
• Formed (requires a counter bored rotor)

Spring Options – Bypass Head

• Standard
• Heavy Duty
• Heavy Duty Hi Temp

Spring Options – Variable Volume Control Head

• Standard
• Heavy Duty