Grundfos STR2 Shower Pump 1.5bar Twin

Grundfos STR2 Shower Pump 1.5bar Twin
Grundfos Shower Pumps

Grundfos watermill are a specialist shower pump manufacturer and supplier who offer a wide selection of pumps designed to boost water pressure to your shower, transforming any compatible shower system into an enjoyable and invigorating power shower.

Please note: Shower pumps are only suitable for open vented hot and cold water systems and are not designed for systems using combi-boilers.

Types of Shower Pump

Positive Head Shower Pumps

These pumps are used in situations where there is at least 70cm between the base of the cistern and the shower head as they rely on gravity fed water to trigger their flow switch and begin pumping the feed to your shower.

Negative Head Shower Pumps

These have a pressure switch rather than flow switch and are used in systems where the cold water tank outlet is level or below the shower head, for example in loft conversions, or where natural water flow is not sufficient to provide a comfortable shower (less then 2 litres per minute). The pressure switch triggers when water is flowing.

Twin Impeller Shower Pumps

These are ideal for most households where incoming mains pressure is appreciably higher than the domestic hot water supply. The twin impeller design takes both hot and cold water feeds and balances the pressures to ensure a comfortable shower.

Single Impeller Shower Pumps

Designed to boost a single water feed, be this either hot, cold or 'pre-mixed' and are ideal for boosting the cold feed to an electric shower.

Regenerative and Centrifugal Pumps

These two terms simply refer to how the increased water pressure is achieved.

STR2 - 1.5 Bar Twin - Positive Head
  • Exceptionally low noise
    • Quiet induction motor
    • Minimised pump head turbulence
    • Anti-vibration feet
  • 1.5 Bar
  • Positive Head
  • Fitted with long life silicone carbide seals for increased reliability
  • Continuously rated pump
  • Twin impeller design delivers both hot and cold water to the mixer at an equal rate
  • WRAS compliant
  • IPX2 water ingress protection
  • Regenerative impeller designed to overcome air pockets

    • The installation of a Surrey Flange is recommended for maximum shower pump efficiency
    • Not suitable for systems using combi-boilers

Write a review

Note: HTML is not translated!
    Bad           Good




Shipping for orders over £100 are free of charge. Orders under £100 are charged at £9.99.


Items are usually shipped same day (Orders before 1pm) - Order can take 2-5 days to arrive at your location, depnding on items size and weight etc.


Free Shipping on Orders Over £100

Free shipping on all orders over £100. Orders Under are shipped at £9.99.

  • Brand: Bathroom Zone
  • Product Code: BMZGW-04-2215
  • Availability: In Stock
  • £187.82 (Inc Vat)
  • Ex Vat: £156.52

Tags: Grundfos, STR2, Shower, Pump, 1.5bar, TwinBMZGW-04-2215Bathroom, Zone, Wet, Room, Systems