204 Litres Combination Cold Water Loft Tank - 590 x 590 x 870mm


Available Options (Prices ex. VAT)

£339.12 £282.60


Lead Time
Next day delivery is available. 2-3 working days
Delivery Cost
Free UK Mainland Delivery


More Information
Length - mm 590
Width - mm 590
Height - mm 870
Weight - kg 11
Capacity - Litres 204
Capacity - Gallons 45
Suitable for Drinking Water (Potable) Yes
WRAS Approved No
Construction Material Polyethylene


This water tank is a complete solution for loft water storage. This combination tank simply means you get two tanks in one; a larger cold water tank and a smaller feed and expansion tank. The expansion tank supplies water to the radiator circuit whilst the cold water tank supplies water to the boiler. The tank is supplied with an installation kit as standard; which is sealed inside the tank for delivery purposes. The only extras you need are the copper tubes/pipes. 

This water tank is manufactured from polyethylene plastic, creating a strong and durable mould. The frame is manufactured form galvanised steel, designed to create extra support that guarantees a long product life. Loft water tanks are mainly used as part of a gravity fed (fully vented) central heating system.

This WRAS approved loft tank complies with British standards to hold potable water. This product can be used as a replacement tank, extra tank or to be installed in new builds. 

Optional insullation jacket and ties are available at an additional cost. These stop the water from fluctuating temperature and therefore reducing the risk of bacteria.

Kit includes;

Byelaw 30 kit; which includes

  • Screened warning pipe elbow
  • Dip tube
  • Ball valve back plate (suitable for ½” or ¾” ball valve)
  • Plastic support washer
  • Rubber sealing washer
  • Screwed breather 
  • Screwed vent pipe sleeve

Also included;

  • Snap on lid
  • ½” BS1212 Part 2 ball valve
  • 4½” Float
  • 22mm compression tank connector
  • Ball valve back plate x2
  • 15mm x½” angled service valve
  • Installation instructions


  • Length: 590mm
  • Height: 870mm
  • Width: 590mm

This product comes with a 12-month manufacturer’s warranty.

Below is a diagram of the installation required showing where inlet and outlets should be drilled. 

Tank Installation

The optional Poly A30 is a backflow and back siphonage prevention device also known as an AB air gap. It protects incoming mains water from contaminants which may have entered the cold water storage tank for processes which are carried out at the point of use or from water that has been added to the tank that isn’t mains supplied.

It is ideal for use in industrial situations such as in dentist’s surgeries (bodily fluids) and bakeries (yeast) or where water is fed to animals (disease).

It protects against the highest level, fluid category 5 risk laid down by the Department of the Environment and WRAS (Water Regulations Advisory Scheme).

The package includes:

  • A raised chamber which fits to the lid area of the tank
  • Extended ball valve arm which replaces the arm supplied as standard with the tank
  • Fixing screws
  • J4 Insulation
  • Seal