British Craftsmanship

LOW AND HIGH PRESSURE KITCHEN TAPS – What is the difference between a high and low pressure water system?

Quooker Tap
In UK homes, generally speaking, you will find two types of water system, either; pressurised or non-pressurised

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When it comes to choosing kitchen taps for your home as well as showers, understanding your homes water pressure system is important before purchasing, matching the right kind of tap to your system is the difference between getting good or bad performance – mismatching can cause issues such as slow running taps and different flow rates for cold & hot water causing an imbalance.

In UK homes, generally speaking, you will find two types of water system, either; pressurised or non-pressurised.

• Pressurised water systems can come in two different variations:

• High Pressure Water Systems are most of the time modern combi boilers or gas water heaters that give you a continuous flow of hot water. If this is the setup you have, you are likely to have a boiler unit but no hot water cylinder or storage tank.

• High Pressure Pumped Water Systems consist of a hot water cylinder with an expansion vessel on top.  Water will be stored at mains pressure in a hot water tank, where it’s heated by immersion heaters attached to the side of the tank or a central heating boiler. Most times this can be located in an airing cupboard or similar. You will likely have the option to choose from most taps with this particular set-up.

• Non-pressurised water systems – can be referred to as a Gravity fed system – usually have a cold water tank in the attic and the hot water tank in the airing cupboard. With a gravity fed system, this will limit your tap options, however by installing a water pump this will increase the pressure and give you a wider range of tap options along with a better shower experience.


Here is a nifty little test you can do yourself which will test the water pressure in your taps.

  1. Grab yourself a water jug between one and two litres in size and a stopwatch.
  2. Put the jug under a tap in your house then turn it on and time for 6 seconds
  3. Turn your tap off.

You will then multiply the amount of water in the jug (in litres) by 10. The figure you get will then show your flow rate in litres per minute.

Anything that is less than 10 litres per minute means you have low water pressure. Between 10-15 litres per minute is acceptable/average, and then above 15 litres per minute will be regarded as good.


Installing a tap specified for a pressurised system on a non-pressurised system will ultimately leave you with a very weak flow of hot water and in some instances too weak a flow to supply any water whatsoever.

There are specific low pressure kitchen taps that are designed for lower pressures, if you have a gravity fed system this wold ensure a steady flow.

If you have a high pressure system, generally speaking, you will have a lot more options as most kitchen taps will be suitable. However, if you are ever unsure seek assistance from a plumber or someone who is knowledgeable on the subject.

At Paul Alexander Kitchens, we can provide taps for your kitchen from a number of top brands suitable for all water systems. Some of the brands we offer are:

Blanco – For over 90 years Blanco kitchen taps have blended style, quality and functionality together to create the perfect choice for your kitchen.

1810 – A simple philosophy from 1810, which is to supply innovative and contemporary European design to those who appreciate superior quality and style.

Quooker – the Company that brought you the tap that does it all; 100 °C boiling, chilled and sparkling water. Energy efficient, safe and sustainable.

Franke – Designed to deliver superior performance and longevity, this brand is known for its high quality finish. They are particularly suited to contemporary design

Caple – Caple taps give you cutting edge designs, high performance technology as well as great value.

If you would like any information or help regarding ordering a new kitchen tap, please contact our sales team based in Windsor, Berkshire on 01753 840004 who will be happy to assist.



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