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Do I need a high or low pressure tap?

The water pressure in your home will determine the type of kitchen tap you need

High Pressure kitchen tap Carena S Vario
High Pressure tap Carena S Vario

BLANCO has an extensive range of kitchen taps and the different designs, finishes and features ensure the largest choice for our customers. Each model is designed for the modern household, however spray features, tap height, colour and finish aren't the most important factors to consider when selecting a tap for your kitchen; first you must check whether your kitchen needs a high or low pressure tap.

What is the difference between a high and low pressure tap?


UK homes generally have one of two main types of hot water system - pressurised and non-pressurised, so before purchasing a tap it is important to find out which system is fitted in your home.

Pressurised water systems come in two different versions:

  • High Pressure Water Systems are usually modern combi boilers or gas water heaters that give you a continuous flow of hot water. If your home has this system 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 – brands include companies like Megaflo. These cylinders form what is known as an unvented system which is pressurised to mains water pressure, ensuring a strong flow of hot water when you turn a tap on in the home, regardless of where it is located. These are usually found in the airing cupboard and with this system you would usually not have a cold water tank.

Non-pressurised water systems – occasionally referred to as Gravity fed systems – usually have a cold water tank in the attic and the hot water tank in the airing cupboard.

What happens if I fit the wrong type of kitchen tap?


If you install a tap that requires a pressurised water system and your system is non-pressurised (gravity fed), you will have an extremely weak flow of hot water; sometimes the flow is too weak to enable the tap to supply water at all.

Homes that have a low pressure water system require specific kitchen taps that are designed to operate at low pressures, ensuring a steady flow of water.

Alternatively, homes that have a high pressure water system are generally able to use any kitchen tap and will still have a steady flow of water.

If you are unsure about the type of system you have, or what type of kitchen tap will be suitable for your home, it is a good idea to enlist the help of a plumber who can easily identify what you need.

How do I find the right kitchen tap for my home?


Once you know the type of kitchen tap required, BLANCO has a range of models to suit all pressure types. Use our kitchen tap selector tool to identify which kitchen tap is right for you; simply filter by pressure type to discover a range of models.

Our kitchen mixer taps employ ceramic disc valve technology to ensure a controlled flow of water at full pressure in a single, smooth, quarter-turn of the lever. And if your home has a traditional gravity-fed unbalanced supply, we can also offer low pressure kitchen taps that combine ceramic disc control technology with built-in features designed to provide the maximum flow rate from your system.

Use our guide to water pressure and diagrams below to help determine which type of pressure system is installed in your home.

Download our guide to water pressure


How to determine whether you have a high or low water pressure system

High Pressure

High Pressure Water System

Pressurised water systems are usually modern combi heaters or gas water heaters that give you a continuous flow of hot water.

If you have this system you are likely to have a boiler unit but no hot water cylinder.

The boiler is usually found in the kitchen giving hot water on demand.

If this is your system you should be able to choose from both the high or low pressure kitchen taps in our range.

BLANCO

High Pressure Pumped Water System

The other version of a high pressured system is a pumped system. This consists of a hot water cylinder with an expansion vessel on top often called a Megaflo. These are usually found in the airing cupboard and with this system you would usually not have a cold water tank. With this high pressure system you can also choose from any of our high pressure kitchen taps or low pressure kitchen taps.

Low pressure gravity fed system

Gravity Fed System

Non-pressurised systems or otherwise known as Gravity fed systems normally have a cold water tank in the attic and the hot water tank in the airing cupboard. If your system looks like this then you should choose taps that state they are suitable for low pressure systems.