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    • Heating Expansion Vessels Reliance RWC - 12 Litre Aquasystem ARB12 Potable Expansion Vessel with Bracket - 3 Bar - XVES050045

    Reliance RWC - 12 Litre Aquasystem ARB12 Potable Expansion Vessel with Bracket - 3 Bar - XVES050045

    520-147-0128

    £50.59 inc. VAT

    £42.16 ex. VAT

      10+ in stock for nationwide delivery

    • The Reliance Water Controls (RWC) Aquasystem ARB12 is a high-performance, 12-litre potable water expansion vessel specifically engineered for unvented hot water systems. Its primary function is to safely accommodate the natural thermal expansion of water as it heats up within a cylinder or sealed system (for instance, water heating from 0°C to 100°C increases in volume by approximately 4.5%). By absorbing this extra volume, the vessel prevents dangerous pressure spikes and protects system components from premature wear.

      • Accommodates hot water expansion from unvented cylinders
      • Includes wall mounting bracket
      Brand
      Reliance Water Controls
      Guarantee
      5 Years
      Category
      Expansion Vessel - Potable
      Product Code
      520-147-0128
      Size
      12 Litres
      Main Material
      Steel
      Main Colour
      White
      Box Quantity
      1
      Weight
      2325 g
      Width
      280 mm
      Height
      295 mm
      Diameter
      280 mm
      Max Pressure
      10 Bar
      GTIN
      0708747445763

    • Collect in-store

      Collection is available between 7:30 am and 4:30 pm.

      Please bring your order confirmation/number with you on collection.

      Please wait for us to contact you before making your way to collect your items.

      We will hold your order for 1 working week before returning the items.

      Estimated collection Thursday 29th.

    • Our delivery policy

      We will deliver goods as soon as we can. An estimated delivery date will be provided on the checkout pages. For stock items, this may be as soon as the next day; for out-of-stock items, it may take a day or two longer.

      £5 standard delivery across the UK for most products on our website, with free delivery on orders above £100 for customers within 10 miles of our Welwyn Garden City location. Some larger items may incur an additional surcharge to cover our delivery costs.

      See our 'Terms of Sale' for more information on our delivery policy.

      Doorstep delivery only.

      Order before 2.00pm for estimated delivery on Tuesday 27th.

    • Our returns policy

      See our 'Terms of Sale' for more information on our returns policy.

      Restocking charges apply.

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