Water System Guide

Identifying your water system is key to providing the correct products, So you can enjoy your new bathroom to the full potential. To help you understand which water system you have use the guide below. In order to obtain accurate water pressure measurements, We always recommend using a plumber/installer to obtain this information with a water pressure gauge before you finalise any orders.

Gravity fed system

Gravity fed systems are commonly found in older properties where you will find a cold water tank in the loft and a hot water cylinder to provide water at low pressure.

Low Pressure – (LP) 0.2BAR

  • 0.2 BAR
Gravity fed system

Combi boiler system

Combination boiler systems heat water directly from the mains and provide hot water on demand.

• No storage tanks in property

 A 28KW combi boiler will typically provide between 1Bar – 1.5Bar pressure

*Pressure is dependent upon the age and size of the combi boiler plus the mains water pressure.

  • 1.0 / 1.5 BAR
Combi Boiler Illustration

Mains high pressure

Unvented pressurised cylinders such as a megaflow, store hot water at mains pressure and deliver it to multiple outlets without losing pressure.

• Unvented cylinder with an expansion cylinder
• No cold water storage tank in the loft
• Stored hot water
• Balanced Pressure
• Limited to Mains Pressure

High Pressure – (HP) 1.0 – 3.0 BAR

  • 1.0 / 3.0 BAR
Unvented Cylinder Illustration

We hope that you found this guide useful, If you have any questions regarding any of our products we’re always at the end of the phone or email.