Screened Overflow Kits

Screened Overflow Kits

Water Regulations           

Here at Precolor Tank Division, we specialising in providing a range of different kinds of water tanks and their components, including screened overflow kits. When you purchase your overflow kit from us, you can rest assured that you will be following the relevant Water Regulation rules in the UK.

Byelaw 30

Previously known as byelaw 30, the water regulations in place in the UK is all about protecting stored water from contamination. Screen overflow kits consist of the screened overflow fitting, screened warning pipe and screened tank vent. Screened overflow kits are designed to contain a screening mesh, which enables the flow of liquids through the flow passage, whilst preventing solids from getting through the system.

Our screened overflow kits are available in a range of different sizes, including ¾"/22mm, 1½"/38mm, 2"/50mm, 2½"/67mm or 3"/75mm. Additionally, we also supply UPVC overflows in either 4 inches, 6 inches, 8 inches, or 12 inches. The overflow is recommended to be twice the size of the inlet into the tank.

Furthermore, we offer rodent screens for water tanks, which are designed to keep out insects and rodents from both the water tank and any connected pipework, so as to not restrict any overflow.

For more information about our screened overflow products, please get in touch with our sales team, or email us at to make your enquiry. You can also talk with a member of our team directly by calling us on 01630 657281. We will be glad to help with any question that you may have for us about screened overflow kits or any other products.

Example of 50mm Screened Overflow Kit

Precolor supplies a full range of fittings all of which meet the requirements of the UK Water Regulations, formerly known as Byelaw 30, we are able in many cases, to bring existing tanks up to current water regulations.

Our screened overflow kits include:-

  • Screened Overflow fitting
  • Screened Warning Pipe
  • Screened Tank Vent

Precolor recommend the overflow to be a minimum of twice the size of the inlet into the tank.

Screened Overflows

Sizes of kits available:- 

¾" 22mm
1½" 38mm
2" 50mm
2½" 67mm
3" 75mm

For larger sizes we have UPVC overflows available in:-

4", 6", 8" & 12"

We can also offer various sizes of Rodent Screens.

Please contact our Sales Team for more information.

Screened Overflow Kit