GWS 8 Litre Heating Expansion Vessel c/w Bracket

The GWS Heatwave Expansion Vessel is designed specifically for closed-loop heating and hydronic systems (including underfloor heating, radiators, and solar thermal systems). Important: This vessel is NOT suitable for potable (drinking) water applications. It features a durable butyl diaphragm and is pre-charged with nitrogen, offering reliable pressure management within your heating system to accommodate thermal expansion and help maintain stable pressure. Supplied complete with a robust mounting bracket for secure installation.

Why Choose This Vessel?
Specifically engineered for UK heating systems, this WRAS-approved expansion vessel ensures compliance and reliable performance in non-potable water circuits. The included galvanised bracket offers hassle-free installation flexibility. Always ensure the pre-charge pressure matches your system requirements.

Key Features:

• Application: Heating Systems / Hydronic Systems (Non-Potable Water Only)
• Type: Diaphragm Expansion Vessel
• Diaphragm Material: Butyl Rubber
• Pre-charge Pressure: 3.5 bar (adjustable as required)
• Maximum Working Pressure (PS): 6 bar
• Maximum Working Temperature (TS): 99°C
• Connection: 3/4" BSP M
• Body Material: Carbon Steel
• Internal Lining: Epoxy Coating

Why Choose This Vessel?
Specifically engineered for UK heating systems, this WRAS-approved expansion vessel ensures compliance and reliable performance in non-potable water circuits. The included galvanised bracket offers hassle-free installation flexibility. Always ensure the pre-charge pressure matches your system requirements.

Please note: Delivery times may vary depending on location, with specific details outlined below.

Standard Delivery

UK Mainland 

• Delivery Time: 2–4 working days
• Free Delivery on all orders

Express Delivery

UK Mainland

• Delivery Time: 1–3 working days
• Delivery fee of £15

Channel Islands

• Postcodes Covered: GY*, IM*, JE* 
• Minimum Order: £50
• Delivery Fee: £70

Northern Ireland, Offshore Territories & Scottish Islands 

• Postcodes Covered: BT*, HS*, KW, ZE
• Minimum Order: £50
• Delivery Fee: £35

Same Day Delivery 

• Eligible Postcodes:
  E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW*
• Minimum Order: £50
• Same Day Delivery Fee: £60
• Special Requests or Locations:
  For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.

Collections

Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.

Collection address: 284 Water Rd, Unit 9, London, HA0 1HX