Heating & Cooling Expansion Vessels

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  1. Flamco Flexcon Premium 12 Expansion Vessel - Pre-Charge 2.5 Bar - 6 Bar - 12 Litre

    16945

    Flamco Flexcon Premium 12 Expansion Vessel - Pre-Charge 2.5 Bar - 6 Bar - 12 Litre

    For sealed heating installations (acc. to EN12828) and chilled water (cooling) installations. Expansion vessels keep the pressure of the installation stable by temporarily absorbing the extra water volume that is generated by heating or cooling installations.

    £104.40 RRP £70.14 £58.45
    Free Delivery
    In stock
  2. Flamco Baseflex 35 Heating Expansion Vessel - 35 Litre - 1.5 Bar Pre-Fill

    25305

    Flamco Baseflex 35 Heating Expansion Vessel - 35 Litre - 1.5 Bar Pre-Fill

    For sealed heating (acc. to EN12828) and cooling installations.
    When the temperature in the installation rises, the system water will expand. The ‘expansion water’ is stored temporarily in the expansion vessel to keep the pressure in the installation at the correct level. Each vessel is factory tested.

    £65.12 RRP £38.95 £32.46
    In stock
  3. Flamco Baseflec 50 Heating Expansion Vessel - 50 Litre - 1.5 Bar Pre-Charge

    25306

    Flamco Baseflec 50 Heating Expansion Vessel - 50 Litre - 1.5 Bar Pre-Charge

    For sealed heating (acc. to EN12828) and cooling installations.
    When the temperature in the installation rises, the system water will expand. The ‘expansion water’ is stored temporarily in the expansion vessel to keep the pressure in the installation at the correct level. Each vessel is factory tested.

     

    £112.35 RRP £75.60 £63.00
    Free Delivery
    In stock
  4. Flamco Flextherm PS 1500 Hot Water Storage Vessel - 1500 Litre - 3 Bar

    18816

    Flamco Flextherm PS 1500 Hot Water Storage Vessel - 1500 Litre - 3 Bar

    Buffer vessels for use in closed heating installations. Can also be used as buffer vessel in cooling installations (insulation for cooling installations is not available; for buffer vessels for cooling installations provided with insulation, see Flamco FlexTherm PSK).

    £3,287.81 RRP £2,179.82 £1,816.52
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    Free Delivery
    Out Of Stock
  5. Lowara UK11A0000814 8 Litre Vertical Expansion Tank - 8 Litre - Carbon Steel

    UK11A0000814

    Lowara UK11A0000814 8 Litre Vertical Expansion Tank - 8 Litre - Carbon Steel

    Lowara's range of vertical compact expansion tanks (Blue) for sanitary hot water with a fixed potable water membrane are made of carbon steel. The membrane is designed to avoid any water stagnation and growth of bacteria.

    £128.40 RRP £89.88 £74.90
    Free Delivery
    In stock
  6. Reflex Refix DE 33 ST Diaphragm Expansion Vessel - 33 Litre

    7305500

    Reflex Refix DE 33 ST Diaphragm Expansion Vessel - 33 Litre

    Refix DE Non-flowed through diaphragm expansion tank for water supply installations that are not subject to DIN 1988, e.g. fire extinguishing and service water systems, underfloor heating or heat source installations. Vessels fitted according to DIN EN 13831. Approval according to Pressure Equipment Directive 2014/68/EC.

    £150.14 £125.12
    Free Delivery
    In stock
  7. Reflex Refix DE 8 Diaphragm Expansion Vessel - 8 Litre

    7301000

    Reflex Refix DE 8 Diaphragm Expansion Vessel - 8 Litre

    Refix DE Non-flowed through diaphragm expansion tank for water supply installations that are not subject to DIN 1988, e.g. fire extinguishing and service water systems, underfloor heating or heat source installations. Vessels fitted according to DIN EN 13831. Approval according to Pressure Equipment Directive 2014/68/EC.

    £39.35 £32.79
    In stock
  8. Reflex DE 33 Diaphragm Expansion Vessel - 33 Litre

    7303900

    Reflex DE 33 Diaphragm Expansion Vessel - 33 Litre

    Refix DE Non-flowed through diaphragm expansion tank for water supply installations that are not subject to DIN 1988, e.g. fire extinguishing and service water systems, underfloor heating or heat source installations. Vessels fitted according to DIN EN 13831. Approval according to Pressure Equipment Directive 2014/68/EC.

    £116.88 £97.40
    Free Delivery
    In stock
  9. Reflex NG 12 Welded Diaphragm Expansion Vessel - 12 Litre

    8240100

    Reflex NG 12 Welded Diaphragm Expansion Vessel - 12 Litre

    Reflex Reflex NG 12 Diaphragm expansion tank for sealed heating and cooling water systems. Vessels are fitted according to Reflex company standard CS-004 based on DIN EN 13831. Approval according to Pressure Equipment Directive 2014/68/EC.

    £37.60 £31.33
    In stock
  10. Reflex N 80 Expansion Vessel - 80 Litre

    8210200

    Reflex N 80 Expansion Vessel - 80 Litre

    Reflex Reflex N 80 Diaphragm expansion tank for sealed heating and cooling water systems. Vessels fitted according to DIN EN 13831. Approval according to Pressure Equipment Directive 2014/68/EC.

    £143.84 £119.87
    Free Delivery
    In stock
  11. Reflex Reflex N 35, expansion vessel - 34  Litre

    8208401

    Reflex Reflex N 35, expansion vessel - 34 Litre

    Reflex Reflex N 35 Diaphragm expansion tank for sealed heating and cooling water systems. Vessels fitted according to DIN EN 13831. Approval according to Pressure Equipment Directive 2014/68/EC.

    £66.44 £55.37
    Free Delivery
    In stock
  12. Reflex N Closed Heating & Cooling System Pressure Vessel - 100Ltr

    REFLEX-8216300

    Reflex N Closed Heating & Cooling System Pressure Vessel - 100Ltr

    Reflex N 100L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 6 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 1.5 bar.

    £344.28 RRP £241.00 £200.83
    Free Delivery
    In stock
  13. Reflex N Closed Heating & Cooling System Pressure Vessel - 200Ltr

    REFLEX-8213300

    Reflex N Closed Heating & Cooling System Pressure Vessel - 200Ltr

    Reflex NG 200L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 6 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 1.5 bar.

    £570.96 RRP £399.67 £333.06
    Free Delivery
    In stock
  14. Reflex N Closed Heating & Cooling System Pressure Vessel - 250Ltr

    RE-8214300

    Reflex N Closed Heating & Cooling System Pressure Vessel - 250Ltr

    Reflex NG 250L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 6 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 1.5 bar.

    £687.62 RRP £481.33 £401.11
    Free Delivery
    In stock
  15. Reflex N Closed Heating & Cooling System Pressure Vessel - 300Ltr

    RE-8215300

    Reflex N Closed Heating & Cooling System Pressure Vessel - 300Ltr

    Reflex NG 300L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 6 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 1.5 bar.

    £818.76 RRP £573.13 £477.61
    Free Delivery
    In stock
  16. Reflex N Closed Heating & Cooling System Pressure Vessel - 400Ltr

    RE-8218000

    Reflex N Closed Heating & Cooling System Pressure Vessel - 400Ltr

    Reflex NG 400L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 6 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 1.5 bar.

    £1,053.14 RRP £737.20 £614.33
    Free Delivery
    In stock
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Heating & Cooling Expansion Vessels

At Pump Sales Direct we stock a range of expansion vessels for both heating and cooling systems.

 

We supply products from some of the country’s leading suppliers that pride themselves on manufacturing high-quality and durable systems, including Gitral and Reflex.

 

A heating expansion vessel is fitted within a closed heating system when an increase in water volume needs to be facilitated as the temperature rises. When the temperature of the water increases, additional volume is created to allow the water into the vessel. The water then flows back through the heating system when the temperature drops again.

 

This helps to reduce the system’s energy consumption by maintaining the same pressure.

 

The products we have in stock have been designed for a range of different systems and can accommodate varying requirements. We offer a choice of maximum working pressures and operating temperatures, and have vessels with capacities ranging from 25 litres to 600 litres.

 

The heating expansion vessel is supplied pre-pressurised at 1.5 bar, which makes it easy to install and use. The connection is ready to go and the vessel simply needs to be fitted into the plumbing system.

 

The size of the heating expansion vessel you require will depend on the capacity of the calorifier that is installed. In practice you should allow for an expansion tank that can accommodate 10% of the capacity.

 

If you are unsure about the exact type of expansion vessel you require, a member of our friendly and experienced team will be happy to provide assistance.

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