Free Delivery

Free Standard Delivery

On Most Products Over £100 ex VAT

Secure Payments

Secure Payments Online

We Accept All Major Credit Cards & PayPal

Our Experience

Our Experience

We Are Experts in Product Selection

Service Maintenance

Service and Maintenance

Network of Engineers throughout the UK

Poly Red Primary Expansion Cistern

Product Code: RED4
Poly Red Primary Expansion Cistern
Delivery Estimate
3 - 5 working days
Our Price £65.00 ex. VAT £78.00 inc. VAT
Shipping Cost £20.00

Want to speak to us?

Open 8.30am - 5pm Mon to Fri

Order by phone and get advice.

Freephone 0333 323 2329


Poly Red Primary Expansion Cistern

Poly Red Primary Expansion Cistern

The POLYRED expansion tank is unique and saves plumbers and installers valuable time. POLYRED comes to the plumber or installer complete and is the perfect product to work alongside a domestic boiler.
POLYRED is the only approved insulated fully assembled primary feed and expansion cistern on the market today.

This insulation is a high density specialist fibreglass. When tested in accordance with BS4213: 2004 gives improved figures of heat retention over all other methods of insulation.

The 18 ltr PolyRED primary expansion tank comes with a fitting kit, which includes:

  • POLYRED Byelaw 30 kit & fitting instructions
  • POLYRED lid
  • 22mm push fit connector
  • 15mm x ½” push fit service valve
  • POLYRED insulation
  • ½” BS1212 Part 2 Ball valve 4½” float


  • Capacity: 18 Litres / 4 Gallons (minimum to waterline)
  • Length: 540mm / 21" 
  • Width: 320mm / 13" 
  • Height: 350mm / 14"

No Measuring - No fitting of components - No Drilling - No Mess - Installed in No Time. 

See the Video for further help.

Product Downloads
Weight (kg) 9.0000
Dimensions 540 x 320 x 350mm high
Volume 18 Litre