progressive cavity pump problems


Progressive cavity pump main problems

Focus on the main problem working with PCP pumps

Progressive cavity pumps are notable for their effectiveness in transferring viscous and abrasive fluids with constant pressure and uniform flow. However, like any machinery, they can encounter some issues. Here are some potential problems with progressive cavity pumps:

  1. Internal parts wear: Internal parts, such as the rotor and stator, are subject to wear over time due to rotational movement and direct contact with the fluid. This can lead to efficiency losses and decreased performance.
  2. Overheating: In situations where the pump is overloaded or the pumped fluid is too viscous, overheating can occur. This can damage internal parts and reduce the pump’s lifespan.
  3. Blockage or obstruction: Solid particles in the pumped fluid can cause blockages or obstructions in the system, compromising flow and damaging the pump’s internal parts.
  4. Seal leakage: Seal leaks can occur due to seal wear or damage to the rotor and stator. This can lead to fluid losses and compromise the overall efficiency of the pump.
  5. Cavitation: If the fluid pressure drops below its vapor pressure, cavitation can occur. This can damage the pump’s internal parts and affect its ability to pump fluid effectively.
  6. Corrosion: If the pump is exposed to corrosive fluids, internal metal parts can corrode over time, compromising structural integrity and reducing pump performance.
  7. Speed control issues: Some progressive cavity pumps are controlled by drive systems that may encounter speed control issues, leading to unwanted variations in flow and pressure.
  8. Sedimentation or scaling: If the pumped fluid contains sediment or solid material that can deposit on the pump’s internal walls, scaling can occur, negatively impacting performance and requiring additional maintenance.
  9. Fluid shortage: If the pump is started without fluid to pump, significant damage can occur to internal parts, especially the rotor and stator. Contact between metal surfaces without lubrication can cause overheating and premature wear.
  10. Risk of catastrophic damage: If the pump runs dry for a prolonged period, significant wear can occur, leading to catastrophic damage to internal parts, necessitating complete pump replacement.

To prevent fluid shortages, it’s important to implement fluid level monitoring systems or pressure switches that halt pump operation when the fluid level drops below a critical point. Additionally, training personnel on the importance of regularly checking fluid levels and intervening promptly in emergencies is crucial.

Addressing these issues requires proper preventive maintenance, regular performance monitoring, and correct pump selection and installation to suit the specific application requirements.






PCP Pumps


dnFlanged industrial series ideal for heavy duty applications.
It is the best solution for the industrial sector for pumping a vast range of fluids; available with UNI, DIN and ANSI flanged and GAS BSP threaded connections.- See pump detail




Standard model equipped with hopper and auger feed screw to move the product to the hydraulic part. Suitable to convey the Bentonite and Drilling Mud, as well as Cuttings.- See pump detail



 Vertical Series developed for pumping from tanks and wells immersed directly in the product to be pumped. The length can be adapted to suit the installation requirements. The stainless steel version (AISI 304 or AISI 316) is supplied with a stator jacket as standard to prevent corrosion of the stator. Two standard configuraions are available: the short version and the long version with split casing and bottom mounted guiding cone – See pump detail


DV SERIES (long vertical)





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Order Original spare parts with NOVA ROTORS manufacturing quality.

For all products we are able to send worldwide with short delivery times – the right partner for the global players.

Despite production site in Italy we are able to delivery on all five continents (please request with delivery transport cost included), we are the deal partner, for companies operating globally as well. Our specialists are happy to provide consultation and support with trouble shooting and part identification for all our pump models.

Spare parts request

Spare parts request

for the section spare parts of the pump you can see here for:diamond series-wobble pumps or MN series
for the other series you can finad on the web site, in case follow the sample video help (click here)





DH pump for conveying cuttings at the drilling mud handling skid. See pump detail








DN Pump

DN pump used for transferring the drilling mud to the high pressure pump. See pump detail





DN Pump

DN pump used for recovering the mud. See pump detail










Oil/ Water Separation

DN pump to feed the separator. The gentle handling of Novarotors-Pump ensures high efficiently of separator.


  Novarotors Pumps do almost no damages to the oil droplets



DN pump used for tansferring the oil from the separator.








SPE (Society Petroleum Engieneers)   Paper SPE 18204 compares how different pump types damage oil droplets when put through them. Ranking found
1)PCP 2) Lobe pumps 3) Sliding Vain
4)Centrifugal 5) Twin screw





Open Drain / Closed Drain Pumps




DV pump for Open Drain application. Novarotors Pumps are able to handle very low NPSHa application, vertical pumps have a NPSHr of 1.2m or less.







DN Pump
DN pump used for closed Drain Application. Also the horizontal pumps can be sized to handle a NPSHa of 1 .0m.







DV Pump canned
A canned DV pump designed for very low NPSHa.The NPSHr can be designed for 0.5m upon request.







Crude Oil Transfer Pumps


DN pump Installation for crude oil transfer. These pumps mostly are located somewhere between in the field, at booster station or just as stand-alone unit, transferring the crude oil down stream.






SN Pump
SN pump for Russia. They handle the various viscosities. Due to the slow shaft speed the reliability and lifetime of the wear components rises up.





JN Pump
MOL pumps transferring the Oil from the Gathering station.






Multiphase Boosting Pumps

JN pump Installation for Multiphase Boosting. The single well boosting increases the production and reduces the well head pressure.





JN Pump
The JN Pumps, installed in Algeria, have to be controlled auto remote, it is an unmanned station in the desert. Failure is not an option.







JN Pump Skid
Multiphase Pump Skid including liquid hold-up tank and injection pump, suitable for Multiphase transferring with heavy oil, suitable to handle poor gas slugs of 30 minutes and more, manual or auto remote controllable.






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