Paper Series Positive Displacement Pumps

Waukesha Cherry-Burrell has been a leader in the design, manufacturing and application of external circumferential piston (ECP) style, rotary positive displacement pumps. Waukesha Cherry-Burrell's PD pumps are in thousands of challenging chemical and industrial applications.

The Waukesha ECP positive displacement pump offers a number of unique advantages. This pump will handle settled slurries that jam up lobe pumps or progressing cavity pumps with ease. It also imparts very low shear forces to the pumped product, far lower shear than lobe pumps or progressive cavity pumps. The ECP pump is designed for 300° F and is not damaged by hot products. If we flush the mechanical seal, the pump can run dry forever as there is no internal contact.

The Waukesha ECP positive displacement pump has features the paper industry has demanded for a long time.

Watch a short animated video about our ECP Style rotors to learn more.
SP Paper Universal 2 Pump SP Paper 5000 Pump SP Paper 420/520 UHC Pump
SP-U2 Pumps
(1” to 6”) for pressures up to
450 psi (31.0 bar).		 SP-5000 Pumps
(1.5” to 6”) for pressures up to
200 psi (13.8 bar).		 SP-420/520 UHC pumps
(6” and 8”) for high-volume
capacities up to 830 GPM
(187 m3/hr)
Features Installation Flexibility Benefits
• 316L stainless steel pump body and cover.
• Pumps with water flush seals will run dry indefinitely with/ water.
• Up to 500 (34.5 bar) psi pressure capability.
• No bearing in product zone.
• Larger diameter 17-4 PH shafts in seal area for greater strength and stiffness. Helps eliminate vibration; extends seal life on SP-U2 and SP-420/520.
• Heavy duty bearing frame.
• Double tapered roller bearings on all models. Contribute further to precise rotor position and longer seal life.
• Grease lubed bearings for positive lubrication to all bearings over entire speed, temperature and pressure range.
• Operates up to 300°F capacity upon application.
• No internal rotor contact eliminates need to rely on pump fluid as a lubrication.
• NPT or ANSI flange configuration available.
• Bi-directional flow. Rotors rotate securely in either direction, locked with belleville washers and torqued nuts.
• Versatile 3-Way mounting of gear case, including vertical alignment of ports on SP-U2 and SP-5000.
• Upper or lower drive shaft position.
 • Pumps with water flushed seals. can run dry indefinitely.
• Pumps filled with settled slurries will start without damaging pump or seals.
• Will not damage shear sensitive products.
• Smooth pulsation free flow.
• No internal rotor contact.
• Requires less horsepower than Progressing Cavity Pumps.
• Shaft timing is not critical like on lobe pump designs.
• No cross contamination of oil into product zone due to unique gear case design.

Typical Product Applications

  • Coating Pigments
  • Polymers
  • Starch Slurry
  • GCC Fillers
  • PCC Fillers
  • TiO2 Fillers
  • Kaolin
  • Cooked Starch
  • Emulsions
  • Resins
  • Retention Aids
  • TiO2 Slurry
  • Specialty Chemicals
 Paper Mill

Product Literature:

Site Map | SPX Corporation | SPX Flow Technology