Vessels

(374 products)

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  1. Flow Through Vessels

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  2. Heating Expansion Vessels

    Heating expansion vessels are a key part of any ...

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  1. Flamco Flamcomat FB Aux. Vessel - 6500Ltr

    17773

    Flamco - 6500 Ltr - Flamcomat FB Aux. Vessel

    Engineered for EN 12828 heating and chilled-water systems, Flamcomat FB Auxiliary Vessels provide additional, pressureless expansion capacity to stabilise sealed system pressures.

    Used alongside the Flamcomat FG module, the FB vessel stores expansion fluid at atmospheric pressure inside a replaceable butyl bladder. The wider Flamcomat system employs a pressure-step degassing method with patented PALL-ring media for effective dissolved gas removal. Supplied with Flexvent Super and height-adjustable feet.

    • Pressureless auxiliary vessel — increases system expansion volume
    • Replaceable butyl bladder for easy maintenance
    • Atmospheric storage of expansion fluid inside the bladder

    Suitable for systems with a maximum operating temperature of 120 °C (note: additional requirements may apply above 110 °C). Bladder maximum temperature 70 °C.

    £29,689.72 £24,741.43
    In Stock In stock
    Delivery Icon Free Standard Delivery
  2. Flamco Flamcomat FB Aux. Vessel - 8000Ltr

    17774

    Flamco - 8000 Ltr - Flamcomat FB Aux. Vessel

    Engineered for EN 12828 heating and chilled-water systems, Flamcomat FB Auxiliary Vessels provide additional, pressureless expansion capacity to stabilise sealed system pressures.

    Used alongside the Flamcomat FG module, the FB vessel stores expansion fluid at atmospheric pressure inside a replaceable butyl bladder. The wider Flamcomat system employs a pressure-step degassing method with patented PALL-ring media for effective dissolved gas removal. Supplied with Flexvent Super and height-adjustable feet.

    • Pressureless auxiliary vessel — increases system expansion volume
    • Replaceable butyl bladder for easy maintenance
    • Atmospheric storage of expansion fluid inside the bladder

    Suitable for systems with a maximum operating temperature of 120 °C (note: additional requirements may apply above 110 °C). Bladder maximum temperature 70 °C.

    £29,691.37 £24,742.81
    In Stock In stock
    Delivery Icon Free Standard Delivery
  3. Flamco Flamcomat FB Aux. Vessel - 10000Ltr

    17775

    Flamco - Flamcomat FB Aux. Vessel - 10000Ltr

    Engineered for EN 12828 heating and chilled-water systems, Flamcomat FB Auxiliary Vessels provide additional, pressureless expansion capacity to stabilise sealed system pressures.

    Used alongside the Flamcomat FG module, the FB vessel stores expansion fluid at atmospheric pressure inside a replaceable butyl bladder. The wider Flamcomat system employs a pressure-step degassing method with patented PALL-ring media for effective dissolved gas removal. Supplied with Flexvent Super and height-adjustable feet.

    • Pressureless auxiliary vessel — increases system expansion volume
    • Replaceable butyl bladder for easy maintenance
    • Atmospheric storage of expansion fluid inside the bladder

    Suitable for systems with a maximum operating temperature of 120 °C (note: additional requirements may apply above 110 °C). Bladder maximum temperature 70 °C.

    £29,693.04 £24,744.20
    In Stock In stock
    Delivery Icon Free Standard Delivery
  4. Flamco Flexcon Expansion Vessel - 1000Ltr

    16903

    Flamco - 1000 Ltr - Flexcon Expansion Vessel - 6 bar

    Flamco Flexcon Expansion Vessel - 1000Ltr - Engineered for EN 12828 heating and chilled-water systems, this Expansion Vessel stabilises sealed system pressure by absorbing thermal expansion in LPHW/CHW applications.

    Maximum working pressure: 6.0 bar.

    Vessels in accordance with EN13831.

    Suitable for systems with a maximum system temperature of 120 °C.

    Minimum / maximum temperature diaphragm: -10 / 70 °C.

    Suitable for addition of glycol-based anti-freeze up to 50%.

    A flexible rolling diaphragm with a ribbed profile prevents sticking and encourages inflow at the slightest pressure rise, while a nitrogen pre-charge helps maintain set pressure longer. The uncoated connection thread supports quick, watertight installation.

    • Rolling-diaphragm design for smooth expansion control
    • Nitrogen pre-charge for extended pre-pressure retention
    • Top-quality steel with epoxy-powder finish
    • Factory tested for reliability

    Built for long service life in domestic, commercial and industrial plant rooms, with continuous medium temperatures from −10 to 70 C.

    £3,100.74 RRP £2,015.48 £1,679.57
    In Stock 2-3 day delivery
    Delivery Icon Free Standard Delivery
  5. Flamco Flexcon Top Expansion Vessel - 110Ltr

    16103

    Flamco - 110 Ltr - Flexcon Top Expansion Vessel - 10 bar

    Flamco Flexcon Expansion Vessel - 110Ltr - Engineered for EN 12828 heating and chilled-water systems, this Expansion Vessel stabilises sealed system pressure by absorbing thermal expansion in LPHW/CHW applications.

    Maximum working pressure: 10.0 bar.

    Vessels in accordance with EN13831.

    Suitable for systems with a maximum system temperature of 120 °C.

    Minimum/maximum temperature diaphragm: -10 / 90 °C.

    Suitable for addition of glycol-based anti-freeze up to 50%.

    A flexible rolling diaphragm with a ribbed profile prevents sticking and encourages inflow at the slightest pressure rise, while a nitrogen pre-charge helps maintain set pressure longer. The uncoated connection thread supports quick, watertight installation.

    • Rolling-diaphragm design for smooth expansion control
    • Nitrogen pre-charge for extended pre-pressure retention
    • Top-quality steel with epoxy-powder finish
    • Factory tested for reliability

    Built for long service life in domestic, commercial and industrial plant rooms, with continuous medium temperatures from −10 to 70 C.

    £929.65 RRP £604.27 £503.56
    In Stock In stock
    Delivery Icon Free Standard Delivery
  6. Flamco Flexcon Top Expansion Vessel - 140Ltr

    16133

    Flamco - 140 Ltr - Flexcon Top Expansion Vessel - 10 bar

    Flamco Flexcon Expansion Vessel - 140Ltr - Engineered for EN 12828 heating and chilled-water systems, this Expansion Vessel stabilises sealed system pressure by absorbing thermal expansion in LPHW/CHW applications.

    Maximum working pressure: 10.0 bar.

    Vessels in accordance with EN13831.

    Suitable for systems with a maximum system temperature of 120 °C.

    Minimum/maximum temperature diaphragm: -10 / 90 °C.

    Suitable for addition of glycol-based anti-freeze up to 50%.

    A flexible rolling diaphragm with a ribbed profile prevents sticking and encourages inflow at the slightest pressure rise, while a nitrogen pre-charge helps maintain set pressure longer. The uncoated connection thread supports quick, watertight installation.

    • Rolling-diaphragm design for smooth expansion control
    • Nitrogen pre-charge for extended pre-pressure retention
    • Top-quality steel with epoxy-powder finish
    • Factory tested for reliability

    Built for long service life in domestic, commercial and industrial plant rooms, with continuous medium temperatures from −10 to 70 C.

    £992.37 RRP £645.04 £537.53
    In Stock In stock
    Delivery Icon Free Standard Delivery
  7. Flamco Flexcon Top Expansion Vessel - 200Ltr

    16193

    Flamco - 200 Ltr - Flexcon Top Expansion Vessel - 10 bar

    Flamco Flexcon Expansion Vessel - 200Ltr - Engineered for EN 12828 heating and chilled-water systems, this Expansion Vessel stabilises sealed system pressure by absorbing thermal expansion in LPHW/CHW applications.

    Maximum working pressure: 10.0 bar.

    Vessels in accordance with EN13831.

    Suitable for systems with a maximum system temperature of 120 °C.

    Minimum/maximum temperature diaphragm: -10 / 90 °C.

    Suitable for addition of glycol-based anti-freeze up to 50%.

    A flexible rolling diaphragm with a ribbed profile prevents sticking and encourages inflow at the slightest pressure rise, while a nitrogen pre-charge helps maintain set pressure longer. The uncoated connection thread supports quick, watertight installation.

    • Rolling-diaphragm design for smooth expansion control
    • Nitrogen pre-charge for extended pre-pressure retention
    • Top-quality steel with epoxy-powder finish
    • Factory tested for reliability

    Built for long service life in domestic, commercial and industrial plant rooms, with continuous medium temperatures from −10 to 70 C.

    £1,282.06 RRP £833.34 £694.45
    In Stock In stock
    Delivery Icon Free Standard Delivery
  8. Flamco Flexcon Top Expansion Vessel - 300Ltr

    16293

    Flamco - 300 Ltr - Flexcon Top Expansion Vessel - 10 bar

    Flamco Flexcon Expansion Vessel - 300Ltr - Engineered for EN 12828 heating and chilled-water systems, this Expansion Vessel stabilises sealed system pressure by absorbing thermal expansion in LPHW/CHW applications.

    Maximum working pressure: 10.0 bar.

    Vessels in accordance with EN13831.

    Suitable for systems with a maximum system temperature of 120 °C.

    Minimum/maximum temperature diaphragm: -10 / 90 °C.

    Suitable for addition of glycol-based anti-freeze up to 50%.

    A flexible rolling diaphragm with a ribbed profile prevents sticking and encourages inflow at the slightest pressure rise, while a nitrogen pre-charge helps maintain set pressure longer. The uncoated connection thread supports quick, watertight installation.

    • Rolling-diaphragm design for smooth expansion control
    • Nitrogen pre-charge for extended pre-pressure retention
    • Top-quality steel with epoxy-powder finish
    • Factory tested for reliability

    Built for long service life in domestic, commercial and industrial plant rooms, with continuous medium temperatures from −10 to 70 C.

    £1,436.80 RRP £933.92 £778.27
    In Stock In stock
    Delivery Icon Free Standard Delivery
  9. Flamco Flexcon Top Expansion Vessel - 425Ltr

    16413

    Flamco - 425 Ltr - Flexcon Top Expansion Vessel - 10 bar

    Flamco Flexcon Expansion Vessel - 425Ltr - Engineered for EN 12828 heating and chilled-water systems, this Expansion Vessel stabilises sealed system pressure by absorbing thermal expansion in LPHW/CHW applications.

    Maximum working pressure: 10.0 bar.

    Vessels in accordance with EN13831.

    Suitable for systems with a maximum system temperature of 120 °C.

    Minimum/maximum temperature diaphragm: -10 / 90 °C.

    Suitable for addition of glycol-based anti-freeze up to 50%.

    A flexible rolling diaphragm with a ribbed profile prevents sticking and encourages inflow at the slightest pressure rise, while a nitrogen pre-charge helps maintain set pressure longer. The uncoated connection thread supports quick, watertight installation.

    • Rolling-diaphragm design for smooth expansion control
    • Nitrogen pre-charge for extended pre-pressure retention
    • Top-quality steel with epoxy-powder finish
    • Factory tested for reliability

    Built for long service life in domestic, commercial and industrial plant rooms, with continuous medium temperatures from −10 to 70 C.

    £2,013.44 RRP £1,308.73 £1,090.61
    In Stock 1 week lead time
    Delivery Icon Free Standard Delivery
  10. Flamco Flexcon Top Expansion Vessel - 600Ltr

    16593

    Flamco - 600 Ltr - Flexcon Top Expansion Vessel - 10 bar

    Flamco Flexcon Expansion Vessel - 600Ltr - Engineered for EN 12828 heating and chilled-water systems, this Expansion Vessel stabilises sealed system pressure by absorbing thermal expansion in LPHW/CHW applications.

    Maximum working pressure: 10.0 bar.

    Vessels in accordance with EN13831.

    Suitable for systems with a maximum system temperature of 120 °C.

    Minimum/maximum temperature diaphragm: -10 / 90 °C.

    Suitable for addition of glycol-based anti-freeze up to 50%.

    A flexible rolling diaphragm with a ribbed profile prevents sticking and encourages inflow at the slightest pressure rise, while a nitrogen pre-charge helps maintain set pressure longer. The uncoated connection thread supports quick, watertight installation.

    • Rolling-diaphragm design for smooth expansion control
    • Nitrogen pre-charge for extended pre-pressure retention
    • Top-quality steel with epoxy-powder finish
    • Factory tested for reliability

    Built for long service life in domestic, commercial and industrial plant rooms, with continuous medium temperatures from −10 to 70 C.

    £2,439.00 RRP £1,585.36 £1,321.13
    In Stock In stock
    Delivery Icon Free Standard Delivery
  11. Flamco Flexcon Top Expansion Vessel - 800Ltr

    16793

    Flamco - 800 Ltr - Flexcon Top Expansion Vessel - 10 bar

    Flamco Flexcon Expansion Vessel - 800Ltr - Engineered for EN 12828 heating and chilled-water systems, this Expansion Vessel stabilises sealed system pressure by absorbing thermal expansion in LPHW/CHW applications.

    Maximum working pressure: 10.0 bar.

    Vessels in accordance with EN13831.

    Suitable for systems with a maximum system temperature of 120 °C.

    Minimum/maximum temperature diaphragm: -10 / 90 °C.

    Suitable for addition of glycol-based anti-freeze up to 50%.

    A flexible rolling diaphragm with a ribbed profile prevents sticking and encourages inflow at the slightest pressure rise, while a nitrogen pre-charge helps maintain set pressure longer. The uncoated connection thread supports quick, watertight installation.

    • Rolling-diaphragm design for smooth expansion control
    • Nitrogen pre-charge for extended pre-pressure retention
    • Top-quality steel with epoxy-powder finish
    • Factory tested for reliability

    Built for long service life in domestic, commercial and industrial plant rooms, with continuous medium temperatures from −10 to 70 C.

    £3,163.51 RRP £2,056.28 £1,713.57
    In Stock In stock
    Delivery Icon Free Standard Delivery
  12. Flamco Flexcon Top Expansion Vessel - 1000Ltr

    16893

    Flamco - 1000 Ltr - Flexcon Top Expansion Vessel - 10 bar

    Flamco Flexcon Expansion Vessel - 1000Ltr - Engineered for EN 12828 heating and chilled-water systems, this Expansion Vessel stabilises sealed system pressure by absorbing thermal expansion in LPHW/CHW applications.

    Maximum working pressure: 10.0 bar.

    Vessels in accordance with EN13831.

    Suitable for systems with a maximum system temperature of 120 °C.

    Minimum/maximum temperature diaphragm: -10 / 90 °C.

    Suitable for addition of glycol-based anti-freeze up to 50%.

    A flexible rolling diaphragm with a ribbed profile prevents sticking and encourages inflow at the slightest pressure rise, while a nitrogen pre-charge helps maintain set pressure longer. The uncoated connection thread supports quick, watertight installation.

    • Rolling-diaphragm design for smooth expansion control
    • Nitrogen pre-charge for extended pre-pressure retention
    • Top-quality steel with epoxy-powder finish
    • Factory tested for reliability

    Built for long service life in domestic, commercial and industrial plant rooms, with continuous medium temperatures from −10 to 70 C.

    £3,557.55 RRP £2,312.41 £1,927.01
    In Stock In stock
    Delivery Icon Free Standard Delivery
  13. Flamco Flexcon M Expansion Vessel - 100Ltr - 3-6 Bar

    22000

    Flamco - 100 Ltr - Flexcon M Expansion Vessel - 3-6 Bar

    Flamco Flexcon M Expansion Vessel - 100Ltr - 3-6 bar. - Tailored for sealed heating and chilled-water systems, the Flexcon M 100/3.0 [6Bar] is a replaceable-bladder expansion vessel designed to stabilise pressure in accordance with EN 12828.

    It excels where static pressure and safety-valve setpoint differ significantly, helping maintain pre-pressure while minimising cycling. Supplied ready to install with a pressure gauge and height-adjustable feet, plus an inspection flange for servicing.

    • Replaceable butyl bladder for fast maintenance
    • Pressure gauge and height-adjustable feet included
    • Inspection flange for internal access
    • Robust steel vessel with durable epoxy-powder finish
    • Uncoated connection thread for easy, watertight installation

    For larger models (12008000 Ltrs), a Flexvent Super can be fitted to enhance air removal.

    £1,703.86 RRP £1,107.50 £922.92
    In Stock In stock
    Delivery Icon Free Standard Delivery
  14. Flamco Flexcon M Expansion Vessel - 200Ltr - 3-6 Bar

    22001

    Flamco - 200 Ltr - Flexcon M Expansion Vessel - 3-6 Bar

    Flamco Flexcon M Expansion Vessel - 200Ltr - 3-6 bar. - Tailored for sealed heating and chilled-water systems, the Flexcon M 100/3.0 [6Bar] is a replaceable-bladder expansion vessel designed to stabilise pressure in accordance with EN 12828.

    It excels where static pressure and safety-valve setpoint differ significantly, helping maintain pre-pressure while minimising cycling. Supplied ready to install with a pressure gauge and height-adjustable feet, plus an inspection flange for servicing.

    • Replaceable butyl bladder for fast maintenance
    • Pressure gauge and height-adjustable feet included
    • Inspection flange for internal access
    • Robust steel vessel with durable epoxy-powder finish
    • Uncoated connection thread for easy, watertight installation

    For larger models (12008000 Ltrs), a Flexvent Super can be fitted to enhance air removal.

    £1,793.53 RRP £1,165.80 £971.50
    In Stock In stock
    Delivery Icon Free Standard Delivery
  15. Flamco Flexcon M Expansion Vessel - 300Ltr - 3-6 Bar

    22002

    Flamco - 300 Ltr - Flexcon M Expansion Vessel - 3-6 Bar

    Flamco Flexcon M Expansion Vessel - 300Ltr - 3-6 bar. - Tailored for sealed heating and chilled-water systems, the Flexcon M 100/3.0 [6Bar] is a replaceable-bladder expansion vessel designed to stabilise pressure in accordance with EN 12828.

    It excels where static pressure and safety-valve setpoint differ significantly, helping maintain pre-pressure while minimising cycling. Supplied ready to install with a pressure gauge and height-adjustable feet, plus an inspection flange for servicing.

    • Replaceable butyl bladder for fast maintenance
    • Pressure gauge and height-adjustable feet included
    • Inspection flange for internal access
    • Robust steel vessel with durable epoxy-powder finish
    • Uncoated connection thread for easy, watertight installation

    For larger models (12008000 Ltrs), a Flexvent Super can be fitted to enhance air removal.

    £2,724.40 RRP £1,770.85 £1,475.71
    In Stock In stock
    Delivery Icon Free Standard Delivery
  16. Flamco Flexcon M Expansion Vessel - 400Ltr - 3-6 Bar

    22003

    Flamco - 400 Ltr - Flexcon M Expansion Vessel - 3-6 Bar

    Flamco Flexcon M Expansion Vessel - 400Ltr - 3-6 bar. - Tailored for sealed heating and chilled-water systems, the Flexcon M 100/3.0 [6Bar] is a replaceable-bladder expansion vessel designed to stabilise pressure in accordance with EN 12828.

    It excels where static pressure and safety-valve setpoint differ significantly, helping maintain pre-pressure while minimising cycling. Supplied ready to install with a pressure gauge and height-adjustable feet, plus an inspection flange for servicing.

    • Replaceable butyl bladder for fast maintenance
    • Pressure gauge and height-adjustable feet included
    • Inspection flange for internal access
    • Robust steel vessel with durable epoxy-powder finish
    • Uncoated connection thread for easy, watertight installation

    For larger models (12008000 Ltrs), a Flexvent Super can be fitted to enhance air removal.

    £3,097.52 RRP £2,013.38 £1,677.82
    In Stock In stock
    Delivery Icon Free Standard Delivery
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Vessels

Vessels are key to keeping water and heating systems safe, reliable, and running efficiently. They help manage pressure, protect components, and make sure everything works smoothly day after day. At Pumpify, we offer vessels from top manufacturers like Flamco, Mikrofill, Stuart Turner, and Zilmet, so you can pick the right option with confidence.

 

From classic pressure and expansion vessels that balance system pressure to smart heating vessels that adjust automatically, there’s a solution for every setup. Maybe a flow-through vessel to keep water moving and prevent stagnation is what you need, or a potable water vessel for safe drinking water storage and regulation suits your project better.

 

With Pumpify, it’s easy to find the right vessel, helping your projects run smoothly and efficiently, every time.