Stuart Turner Mainsboost 200S Accumulator Vessel (Add-on Unit) – 200 Litre Pressurised Water Storage

The Stuart Turner Mainsboost 200S Accumulator Vessel (Add-on Unit) offers a 200-litre nominal capacity pressurised cold water storage solution designed to expand existing Mainsboost systems. It provides a usable volume of approximately 110 litres and features the robust construction and WRAS approval expected from Stuart Turner’s Mainsboost range, ensuring reliable pressure stabilisation and enhanced water flow in medium to large residential or commercial properties.

Why Buy the Mainsboost 200S Accumulator Vessel?

• Expandable Capacity: Easily adds pressurised water storage capacity when existing Mainsboost vessels require additional volume to meet demand peaks.
• Durable Build: Epoxy-coated steel vessel with virgin butyl diaphragm for longevity and maintenance-free operation.
• WRAS Approved: Certified safe for potable water supply systems and compliant with UK regulations.
• Includes Installation Kit: Supplied with a comprehensive Upstream Line-in Kit (ULK) featuring 22mm fittings for easy integration.
• Silent Operation: Requires no electricity or moving parts, ensuring quiet running while supporting mains pressure boosting.
• Extended Warranty: Comes with a 5-year manufacturer’s warranty for peace of mind.

Suitable For

• Mainsboost systems needing increased water storage for larger properties or high water demand.
• Domestic and commercial buildings requiring robust, maintenance-free water pressure stabilisation.
• Situations where WRAS-compliant, high-quality pressure vessels are mandated.
• Systems aiming to enhance flow consistency and reduce pump cycling.

Technical Specifications

MPN: 44628

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