Potable Water Expansion / Pressure Vessels

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  1. Flamco Airfix Expansion Vessel - P 2Ltr

    FL-Airfix P02

    Flamco Airfix Expansion Vessel - P 2Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £46.07 RRP £29.94 £24.95
    In stock
  2. Flamco Airfix Expansion Vessel - P 3Ltr

    FL-Airfix P03

    Flamco Airfix Expansion Vessel - P 3Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £51.43 RRP £33.43 £27.86
    In stock
  3. Flamco Airfix Expansion Vessel - P 5Ltr

    FL-Airfix P05

    Flamco Airfix Expansion Vessel - P 5Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £53.19 RRP £34.57 £28.81
    In stock
  4. Flamco Airfix Expansion Vessel - P 8Ltr

    FL-Airfix P08

    Flamco Airfix Expansion Vessel - P 8Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £59.46 RRP £38.65 £32.21
    In stock
  5. Flamco Airfix Expansion Vessel - P 100Ltr

    FL-Airfix P100

    Flamco Airfix Expansion Vessel - P 100Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £401.14 RRP £260.74 £217.28
    Free Delivery
    In stock
  6. Flamco Airfix Expansion Vessel - P 1000Ltr

    FL-Airfix P1000

    Flamco Airfix Expansion Vessel - P 1000Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £5,721.98 RRP £3,719.28 £3,099.40
    Free Delivery
    In stock
  7. Flamco Airfix Expansion Vessel - P 12Ltr

    FL-Airfix P12

    Flamco Airfix Expansion Vessel - P 12Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £60.93 RRP £39.60 £33.00
    In stock
  8. Flamco Airfix Expansion Vessel - P 150Ltr

    FL-Airfix P150

    Flamco Airfix Expansion Vessel - P 150Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £598.00 RRP £388.70 £323.92
    Free Delivery
    In stock
  9. Flamco Airfix Expansion Vessel - P 16Ltr

    FL-Airfix P16

    Flamco Airfix Expansion Vessel - P 16Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £72.32 RRP £47.00 £39.17
    In stock
  10. Flamco Airfix Expansion Vessel - P 18Ltr

    FL-Airfix P18

    Flamco Airfix Expansion Vessel - P 18Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £75.20 RRP £48.89 £40.74
    In stock
  11. Flamco Airfix Expansion Vessel - P 200Ltr

    FL-Airfix P200

    Flamco Airfix Expansion Vessel - P 200Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £704.24 RRP £457.75 £381.46
    Free Delivery
    In stock
  12. Flamco Airfix Expansion Vessel - P 24Ltr

    FL-Airfix P24

    Flamco Airfix Expansion Vessel - P 24Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £89.23 RRP £58.00 £48.33
    In stock
  13. Flamco Airfix Expansion Vessel - P 300Ltr

    FL-Airfix P300

    Flamco Airfix Expansion Vessel - P 300Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £944.41 RRP £613.86 £511.55
    Free Delivery
    In stock
  14. Flamco Airfix Expansion Vessel - P 35Ltr

    FL-Airfix P35

    Flamco Airfix Expansion Vessel - P 35Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £175.94 RRP £114.36 £95.30
    Free Delivery
    In stock
  15. Flamco Airfix Expansion Vessel - P 50Ltr

    FL-Airfix P50

    Flamco Airfix Expansion Vessel - P 50Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £209.84 RRP £136.39 £113.66
    Free Delivery
    In stock
  16. Flamco Airfix Expansion Vessel - P 500Ltr

    FL-Airfix P500

    Flamco Airfix Expansion Vessel - P 500Ltr

    The Airfix P is an expansion vessel that is intended for use on unvented potable systems. The vessel is comprised of a high strength steel shell and EPDM diaphragm. Installation is subject to building regulations. Features include WRAS approved product, suitable for potable systems, standard BSP threaded connection.

    £1,477.62 RRP £960.46 £800.38
    Free Delivery
    In stock
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Closed heating and hot water systems, unlike older gravity-fed systems, need a potable expansion vessel in order to relieve excess pressure that might otherwise cause damage to the system or lead to unpleasant noise from water hammer.

 

The tank buffers pressure changes caused due to the expansion of water as it’s heated up. They help to ensure there's a constant water pressure, making the operation of showers and mixer taps more predictable.

 

We stock potable water expansion vessels in a range of different sizes. The Varem range of vessels starts from 2 litres in size; they can be used for hot and chilled systems, with a wide operating temperature range from minus 10 to plus 99 Celsius.

 

They come pre-pressurised at 2.0 bar and are available in sizes up to 25 litres, making them suitable for different types and sizes of installation. Stainless-steel flanges are used on all 8-10 bar vessels to ensure a long, reliable life.

 

A potable expansion vessel suitable for larger installations, the Reflex DE range starts at 60 litres capacity. Again, these are suitable for chilled and heating applications with a maximum pressure of 10 bar and a maximum temperature of 70 Celsius. They’re pre-pressurised to 4.0 bar and come in sizes up to a generous 500-litre capacity, which is suitable for large commercial or multi-occupancy applications.

 

All connections on Reflex DE vessels are threaded for ease of installation. The full range of sizes for both types of potable expansion vessel is available to view on our website so that you can order the one you need.