Pressure & Expansion Vessels

Pressure & Expansion Vessels

Pumps UK LTD can provide WRAS Approved high quality steel expansion tanks and pressure vessels across a range of sizes and manufactures. The vessels are designed for heating and chilled water expansion and as draw down vessels on cold water systems.

Our range includes:

Pressure vessel is a closed container made to hold liquids at a pressure different from that of normal ambient pressure. For use in pressure boosting and boiler systems. The vessels have a membrane or diaphragm that is pressurised by an air charge. The water expands against this void. Normally the vessels air charge is equal to the fill pressure of the system before the boiler is turned on. The vessel will start to take expansion when the water starts to heat up.  If vessel sizing or air charge is is incorrect the system will over expand and lift the safety valve in the system. On booster pump systems the vessel charge should be .2 Bar below the cut in pressure of the pump. If the pressure is not correct the pumps will hunt and cause fluctuation in the system.

For more information on any of the expansion tanks we have to offer please contact the office or fill out our online quotation form.


  • Reflex Vessels

    Reflex Vessels

  • Zilmet Vessels

    Zilmet Vessels

  • Varem Vessels

    Varem Vessels

  • Cimm Vessels

    Cimm Vessels

  • Lowara Vessels

    Lowara Vessels

Items 1-18 of 24

Set Descending Direction
per page
Page
View as Grid List
  1. Varem 1000 Litre Vertical Pressure Vessel (16 Bar)
  2. Varem 750 Litre Vertical Pressure Vessel (16 Bar)
  3. Varem 500 Litre Vertical Pressure Vessel (16 Bar)
  4. Varem 300 Litre Vertical Pressure Vessel (16 Bar)
  5. Varem 200 Litre Vertical Pressure Vessel (16 Bar)
  6. Varem 100 Litre Vertical Pressure Vessel (16 Bar)
  7. Varem 20 Litre Vertical Pressure Vessel (16 Bar)
  8. Varem Horizontal tank
  9. Varem expansion tank
  10. Varem 2 litre Vertical Vesse
  11. VAREM 8 Litre
  12. Varem 20 Litre Pressure vessel
  13. Varem 20 litre Horizontal pressure vessel
  14. Varem 60 Litre Vertical Pressure Vessel (10 Bar)
  15. Varem 60 litre horizontal vessel
  16. Varem 100 litre Vertical Vessel
  17. Varem 100 litre vertical vessel
  18. Varem 200 Litre Pressure vessel

Items 1-18 of 24

Set Descending Direction
per page
Page
View as Grid List