Progressive Cavity Pump Type Series EP

For relatively low conveyed volumes at comparatively high pressures, for thick or thin media with or without solids or fibres. Ideal for paper or cellulose industry, chemical industry, self-priming pumping under high pressure.


Technical Data

up to 40 m³/h
Differential Pressure: 
up to 80 bar
up to 1,000,000 mm²/s
Solids Capacity: 
over 75 mm (3-inch) diameter fluid borne particles
180 °C (360 °F)




The Bornemann progressive cavity pumps consists of only one basic moving part - a driven metal (inelastic) rotor rotating within an elastomer lined (elastic) stator.

As the rotor turns, chambers are formed between the rotor and stator. These chambers progress axially from the suction to discharge end, moving the fluid. By increasing the pitch of the rotor and stator, additional chambers, or stages, are formed.

As the number of stages increases, the pressure capability of the pump increases proportionately. This design permits pumping in either direction and provides the high suction lift capability and smooth, pulsation-free delivery for which Bornemann pumps are known. Available in numerous rotor/stator material combinations, their ability to handle fluids gently and with extremely low shearing makes the progressive cavity pump ideally suited for metering and dosing services.


Advantages for Users

EP pumps are used for high pressure applications up to 80 bar at comparatively low capacities.

The fluids handled may have low or high viscosities and may contain fibres or solids. This suits for operations with sludge, chemicals and petrochemicals, crude oil and condensates, etc. The pumps are available in 40, 64 and 80 bar ratings.