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Twin Screw Pump Guide

Twin Screw Pump Guide


What is a Twin Screw Pump?


A Twin Screw Pump is a Rotary Positive Displacement Pump that operates using 2 screws to move the product through the pump casing. The Twin Screw Pump available from our range is a Sanitary Self-Priming Twin Screw Pump from Pomac Pumps.

Pomac is a family-owned company from The Netherlands that specialises in Hygienic Process Pumps, supplying the Pharmaceutical, Chemical and Food Industries.


How does a Twin Screw Pump work?


The 2 large screws within the pump counter-rotate, without touching. They create a vacuum as they pass the suction port, drawing liquid into the pump housing. As the screws rotate past the discharge port, the volume between them decreases which pushes the liquid to exit the pump through the discharge port.

What are the benefits of using a Twin Screw Pump?


The Twin Screw Pump is EHEDG certified, which is the highest hygiene rating available for a Sanitary Pump. The pump is manufactured from a high-grade Stainless Steel (316L) and is cast rather than welded, which ensures there are no crevices inside the pump that the product can get stuck in. Similarly, the pump is finished with a surface roughness of 0.8 as standard, or 0.5 if requested. As well as the material and finish, the pump has been designed and manufactured with a minimal amount of dead space inside making cleaning of the pump more efficient.

The Sanitary Twin Screw Pump can self-prime up to 8m and can dry run for brief periods of time without causing damage to the pump.

As the screws inside the pump rotate but do not touch, they can handle solids up to 60mm without causing damage to the product or the pump itself.

The operating principle of the pump ensures that the pump provides a steady, pulsation-free flow for those applications that cannot have pulsations in their fluid output.

Twin Screw Pumps can handle high temperatures up to a maximum of 140ºC.

What applications can a Twin Screw Pump be used for?


Twin Screw Pumps can be used for a number of applications, including but not limited to:

For the full list head over to our Sanitary Self-Priming Twin Screw Pump product page.

Troubleshooting your Sanitary Twin Screw Pump


If you have a problem with your Twin Screw Pump, we’ve got a simple list of options for you below. For additional help, make sure you get in contact with TS Pumps as soon as possible, we’d be happy to help!

If a problem arises:

  1. Check that your pump has been installed correctly.
  2. Check that the pump is operating in the conditions specified when the pump was initially quoted.
  3. Check that any pump accessories connected to the installation and your pump are working correctly.

If you’re interested in receiving a competitive quote for a Sanitary Twin Screw Pump, get in contact with the team today. We aim to quote within 24 hours.

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