Boss - Supastor Cylinder Spares

Downloadable PDF Installation and Servicing Manuals can be found below:

Boss Unvented Cylinder – Technical Data

10 items

  • Boss - 11" Immersion Heater Element & Thermostat

    Boss – 11″ Immersion Heater Element & Thermostat

    SKU: BS-39-15
    EXCL. TAX £21.23 INCL. TAX £25.47     Add to cart

  • Boss – 15mm to 22mm Tundish

    SKU: BS-10-9
    EXCL. TAX £10.73 INCL. TAX £12.87     Add to cart
  • Boss - 18 Litre White Potable Water Expansion Vessel

    Boss – 18 Litre White Potable Water Expansion Vessel

    SKU: BS-26-24
    EXCL. TAX £33.31 INCL. TAX £39.97     Add to cart
  • Boss - 24 Litre White Potable Water Expansion Vessel

    Boss – 24 Litre White Potable Water Expansion Vessel

    SKU: BS-26-22
    EXCL. TAX £34.56 INCL. TAX £41.47     Add to cart
  • Boss - 3 Bar Pressure Reducing Limiting Valve

    Boss – 3 Bar Pressure Reducing Limiting Valve

    SKU: BS-9-28
    EXCL. TAX £39.56 INCL. TAX £47.47     Add to cart
  • Boss - 35 Litre Potable Expansion Vessel

    Boss – 35 Litre Potable Expansion Vessel

    SKU: BS-26-13
    EXCL. TAX £122.69 INCL. TAX £147.23     Add to cart
  • Boss - 60 Litre Potable Expansion Vessel

    Boss – 60 Litre Potable Expansion Vessel Alternative

    SKU: BS-23-6
    EXCL. TAX £188.04 INCL. TAX £225.65     Add to cart
  • Boss - 7 Bar 22mm Pressure & Temperature Relief Valve

    Boss – 7 Bar 22mm Pressure & Temperature Relief Valve

    SKU: BS-9-13
    EXCL. TAX £23.73 INCL. TAX £28.47     Out of Stock
  • Boss - Limit & Control Thermostat

    Boss – Limit & Control Thermostat

    SKU: BS-38-2
    EXCL. TAX £24.31 INCL. TAX £29.17     Add to cart
  • Honeywell V4043H 1056 - 2 Port Motorised Zone Valve 22mm V4043H1056

    Suitable for Boss – 2 Port Motorised Valve Alternative

    SKU: BS-25-2a
    EXCL. TAX £70.81 INCL. TAX £84.97     Add to cart