What is Progressive Cavity Pump? Everything You Need to Know.

What is Progressive Cavity Pump? Everything You Need to Know.

What is Progressive Cavity Pump?

A Progressive Cavity Pump is a type of positive displacement pump, which consists of a rotor and stator. The metal rotor drives the stator through the chain and begins to fill the cavities with equal amounts of liquid which then get pushed through the pump outlet. They are a highly robust pumping system that ensures maximum performance and reliability.

How does a Progressive Cavity Pump work?

The rotor inside the pump rotates within the stator, as it turns, the cavities within the stator are filled with the process media and are carried towards the pump outlet under pressure. The pockets of fluid have a set volume that decides the volumetric flow rate of the pump, this is directly proportional to the rotational speed of the rotor and results in low levels of shearing and little to no pulse.

Are Progressive Cavity Pumps Self Priming?

Progressive cavity pumps do have the added benefit of self-priming capabilities. They cannot however run dry for very long. This is due to the rubber stator needing to be lubricated prior to liquid entering the pump. The Nova Rotas progressive cavity pump version has a suction lift of up to 8m and low NPSHa preventing cavitation occurring inside the pump.


Who are Nova Rotors?

Tapflo UK is proud to have partnered with Nova Rotors SRL, a leading Italian manufacturer of Progressive Cavity Pumps. Founded in 1990 they are now a world-renowned and industry-leading force in the design, manufacture and production of Progressive Cavity Pump & Wobble Pumps.

Benefits included with our Pump partner Nova Rotas:

  1. Reliable manufacturer with an advanced control system for quality control
  2. Highly qualified staff
  3. Good delivery times
  4. Competitive pricing & quick response times
  5. Customisable & Modular design
  6. European Origin & Quality
  7. Quality management and production standards to meet industry requirements

Advantages & Use of Nova Rotors’ Progressive Cavity Pump

  • Feature a uniform flow which is proportional to the speed of rotation
  • Suitable for low NPSHa & suction lift (up to 8 m) applications, dependent on size, number of stages and speed
  • Able to handle shear sensitive and heterogeneous fluids containing gases, solids, abrasive particulates & fibrous materials
  • Can pump both low and high viscosity fluids
  • Can be used for low flow and dosing applications
  • Wide Temperature range from -40ºC to +150ºC
  • Low pulsation with minimal impact on the process media
  • High discharge pressures, up to 48 Bar (6 Bar / Stage). Units are available with 1 – 8 stages
  • Reversible Operation, effective up to 12 bar
  • Pumps can be manufactured to meet a wide variety of materials available meaning pumps can be specifically catered to individual applications
  • Modular design based around the Diamond Series which means accessories and design tweaks can be added to build up customised units whilst ensuring the main spare parts are kept standard.
  • Patented Pin Joint design which provides increased solids passage & protection as well as high reliability & operational life span of up to 8000 hrs before maintenance or failure.