Vessels

(196 products)

View as Grid List

196 Items

Page
per page
Filters
Set Descending Direction
  1. Wilo XT500V 500 Litre Verticle Vessel
    £644.28 £536.90
    Free Delivery
    In stock
  2. Reflex DE Pressure Vessel - 60Ltr

    RE-7306400

    Reflex DE Pressure Vessel - 60Ltr

    Reflex DE 60L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 10 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 4.0 bar.

    £144.00 £120.00
    Free Delivery
    In stock
  3. Reflex DE Pressure Vessel - 80Ltr

    PV80W

    Reflex DE Pressure Vessel - 80Ltr

    Reflex DE 80L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 10 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 4.0 bar.

    £180.00 £150.00
    Free Delivery
    In stock
  4. Reflex DE Pressure Vessel - 100Ltr

    RE-7306600

    Reflex DE Pressure Vessel - 100Ltr

    Reflex DE 100L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 10 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 4.0 bar.

    £216.00 £180.00
    Free Delivery
    In stock
  5. Reflex DE Pressure Vessel - 200Ltr

    RE-7306700

    Reflex DE Pressure Vessel - 200Ltr

    Reflex DE 200L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 10 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 4.0 bar.

    £330.00 £275.00
    Free Delivery
    In stock
  6. Reflex DE Pressure Vessel - 300Ltr

    RE-7306800

    Reflex DE Pressure Vessel - 300Ltr

    Reflex DE 300L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 10 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 4.0 bar.

    £408.00 £340.00
    Free Delivery
    In stock
  7. Reflex DE Pressure Vessel - 500Ltr

    RE-7306900

    Reflex DE Pressure Vessel - 500Ltr

    Reflex DE 500L Vessel for heating and chilled water applications. This vessel has threaded connections and has a Max. working pressure of 10 bar with a Max. operating temperature of 70c. It comes pre-pressurised at 4.0 bar.

    £662.00 RRP £528.00 £440.00
    Free Delivery
    In stock
  8. Reflex NG Closed Heating & Cooling System Pressure Vessel - 80Ltr

    RE-7001200

    Reflex NG Closed Heating & Cooling System Pressure Vessel - 80Ltr

    Reflex NG 80L 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.

    £126.00 £105.00
    Free Delivery
    In stock
  9. Reflex NG Closed Heating & Cooling System Pressure Vessel - 100Ltr

    REFLEX-8001411

    Reflex NG 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.

    £166.80 £139.00
    Free Delivery
    In stock
  10. Reflex NG Closed Heating & Cooling System Pressure Vessel - 140Ltr

    RE-7001600

    Reflex NG Closed Heating & Cooling System Pressure Vessel - 140Ltr

    Reflex NG 140L 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.

    £216.00 £180.00
    Free Delivery
    In stock
  11. 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.

    £318.00 £265.00
    Free Delivery
    In stock
  12. Reflex N Closed Heating & Cooling System Pressure Vessel - 250Ltr

    RE-7214300

    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.

    £342.00 £285.00
    Free Delivery
    In stock
  13. Reflex N Closed Heating & Cooling System Pressure Vessel - 300Ltr

    RE-7215300

    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.

    £408.00 £340.00
    Free Delivery
    In stock
  14. Reflex N Closed Heating & Cooling System Pressure Vessel - 400Ltr

    RE-7218000

    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.

    £558.00 £465.00
    Free Delivery
    In stock
  15. Reflex N Closed Heating & Cooling System Pressure Vessel - 500Ltr

    RE-7218300

    Reflex N Closed Heating & Cooling System Pressure Vessel - 500Ltr

    Reflex NG 500L 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.

    £684.00 £570.00
    Free Delivery
    In stock
  16. Reflex N Closed Heating & Cooling System Pressure Vessel - 600Ltr

    RE-8218400

    Reflex N Closed Heating & Cooling System Pressure Vessel - 600Ltr

    Reflex NG 600L 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.

    £760.80 £634.00
    Free Delivery
    In stock
View as Grid List

196 Items

Page
per page
Filters
Set Descending Direction

Not sure what you're looking for?

Rated excellent on

Rated excellent on trustpilot

We're the largest independent pump distributor in the UK

Call us to get expert advice

Call us to get expert advice:

0800 008 6405

The role of pressure vessels and expansion vessels in a heating or cooling system is to act as a method of compensating for fluid volumes. With water systems, fluids flowing through the circuit will change in volume as the temperature changes. The fluids expand with higher temperatures and contract with lower temperatures. The pressure of the entire system, however, has to be maintained within strict upper and lower limits for optimal operation. Both expansion and pressure vessels are usually made of drawn and welded steel. The exterior surface is treated with an anti-corrosion compound, while a diaphragm is installed within the tank interior and effectively divides the interior space into two. Water on one side of the diaphragm is connected via pipework to the heating and cooling system. When the heating system is operational, the water within the system expands. Too great an expansion of water volumes could damage the system’s pipework, so excess volumes are directed to the tank. Water cannot be compressed, and older heating systems could double pressures within the pipework, causing some catastrophic failures. With an expansion tank, the water will accumulate by compressing the air present on the other side of the diaphragm. If a tap in the system withdraws the water, or the temperature falls and the water contracts, the air will push the water out of the tank to resume circulating around the heating or cooling system. Such vessels are a vital part of relieving excess pressures in domestic, commercial and industrial heating and cooling systems.