It is often the case that a bath will be fitted with a set of bath taps which includes a shower diverter.
Customer feedback from sales of ShowerPowerBooster is that although a single SPB fitted on the hot only will work.

SP2B Fully Automatic
Shower Power Booster

A better solution is to boost the hot and the cold using a SP22S

SPB Two Linked Automatic Water Pressure Pumps

Our Automatic pump (SP2B) can be used in various applications including boosting taps with a shower diverter. Our website has a wealth of articles and information pages to help you choose the best solution and we will support and help all customers wherever you have purchased your pump.

Click on the link below to see the latest ShowerPowerBooster Fitting Guide.

ShowerPowerBooster Information Manual

Wall Mounted Mixers
It is a fact that most wall mounted mixers are great at balancing differential pressure of 5 to 1 so a single SP2B is all you need for most of the wall mounted mixers. 80% of wall mounted mixers need just the one pump on the hot because a mixed shower takes 2/3 hot and 1/3 cold. Boosting the hot and the cold for a gravity system is always better than boosting just the hot but for most people just boosting the hot is fine.

Bath Taps with a Shower Diverter
Unlike wall mounted mixers, ‘bath taps with a shower diverter’ are very poor at mixing with an unequal hot and cold pressure. We always recommend boosting the hot and the cold with a SP22S if its a gravity system and double boosting the hot with a SP21S if its mains pressure cold and gravity hot system.