Vessels

(374 products)

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  1. Flow Through Vessels

    Flow through ve ...

  2. Heating Expansion Vessels

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

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  1. Mikrofill MikroPro XP Expansion Vessel - 100 Litre - 10 Bar - No Bracket

    210100

    Mikrofill - MikroPro XP Expansion Vessel - 100 Ltr - 10 Bar. - No Bracket

    MikroPro Potable XP Expansion Vessel - 100 Litre Capacity - 10 bar. This range serves heating, chilled and potable (drinking) water systems, with capacities up to 500 Ltrs to suit a wide variety of installations for commercial or residential. This item comes without a wall mount bracket.

    Built for hygiene and durability, all internal surfaces in contact with water are corrosion-protected for potable use, and models from 50–500 Ltrs feature a replaceable diaphragm for straightforward maintenance.

    • Capacity options: 12–500 Ltrs
    • Rated pressure: up to 10 Bar
    • Potable-safe construction: coated internal wetted surfaces
    • Serviceable design: replaceable diaphragm (50–500 Ltrs)

    Vessels are PED 97/23/EC compliant, rated to 70 °C, and supplied with threaded connections and a durable powder-coated finish for long service life.

    £306.00 RRP £348.84 £290.70
    In Stock In stock
    Delivery Icon Free Standard Delivery
  2. Mikrofill MikroPro XP Expansion Vessel - 200 Litre - 10 Bar - No Bracket

    210200

    Mikrofill - MikroPro XP Expansion Vessel - 200 Ltr - 10 Bar. - No Bracket

    MikroPro Potable XP Expansion Vessel - 200 Litre Capacity - 10 bar. This range serves heating, chilled and potable (drinking) water systems, with capacities up to 500 Ltrs to suit a wide variety of installations for commercial or residential. This item comes without a wall mount bracket.

    Built for hygiene and durability, all internal surfaces in contact with water are corrosion-protected for potable use, and models from 50–500 Ltrs feature a replaceable diaphragm for straightforward maintenance.

    • Capacity options: 12–500 Ltrs
    • Rated pressure: up to 10 Bar
    • Potable-safe construction: coated internal wetted surfaces
    • Serviceable design: replaceable diaphragm (50–500 Ltrs)

    Vessels are PED 97/23/EC compliant, rated to 70 °C, and supplied with threaded connections and a durable powder-coated finish for long service life.

    £481.00 RRP £548.34 £456.95
    In Stock In stock
    Delivery Icon Free Standard Delivery
  3. Mikrofill MikroPro XP Expansion Vessel - 300 Litre - 10 Bar - No Bracket

    210300

    Mikrofill - MikroPro XP Expansion Vessel - 300 Ltr - 10 Bar. - No Bracket

    MikroPro Potable XP Expansion Vessel - 300 Litre Capacity - 10 bar. This range serves heating, chilled and potable (drinking) water systems, with capacities up to 500 Ltrs to suit a wide variety of installations for commercial or residential. This item comes without a wall mount bracket.

    Built for hygiene and durability, all internal surfaces in contact with water are corrosion-protected for potable use, and models from 50–500 Ltrs feature a replaceable diaphragm for straightforward maintenance.

    • Capacity options: 12–500 Ltrs
    • Rated pressure: up to 10 Bar
    • Potable-safe construction: coated internal wetted surfaces
    • Serviceable design: replaceable diaphragm (50–500 Ltrs)

    Vessels are PED 97/23/EC compliant, rated to 70 °C, and supplied with threaded connections and a durable powder-coated finish for long service life.

    £608.00 RRP £693.12 £577.60
    In Stock In stock
    Delivery Icon Free Standard Delivery
  4. Mikrofill MikroPro Expansion Vessel - 500 Litre - 10 Bar - No Bracket

    210500

    Mikrofill - MikroPro Expansion Vessel - 500 Ltr - 10 Bar. - No Bracket

    MikroPro Potable XP Expansion Vessel - 500 Litre Capacity - 10 bar. This range serves heating, chilled and potable (drinking) water systems, with capacities up to 500 Ltrs to suit a wide variety of installations for commercial or residential. This item comes without a wall mount bracket.

    Built for hygiene and durability, all internal surfaces in contact with water are corrosion-protected for potable use, and models from 50–500 Ltrs feature a replaceable diaphragm for straightforward maintenance.

    • Capacity options: 12–500 Ltrs
    • Rated pressure: up to 10 Bar
    • Potable-safe construction: coated internal wetted surfaces
    • Serviceable design: replaceable diaphragm (50–500 Ltrs)

    Vessels are PED 97/23/EC compliant, rated to 70 °C, and supplied with threaded connections and a durable powder-coated finish for long service life.

    £995.00 RRP £1,134.30 £945.25
    In Stock In stock
    Delivery Icon Free Standard Delivery
  5. Flamco Flextherm PS 1000 Hot Water Buffer Vessel - 1000 Litre

    18850

    Flamco - 1000 Ltr - Flextherm PS 1000 Hot Water Buffer Vessel

    Purpose-built thermal storage for heat pumps and sealed heating circuits, the Flextherm PS Buffer Vessel stores heated water to stabilise flow, smooth demand and reduce compressor cycling.

    A floor-standing steel tank with 90° opposed connections lets you tuck the vessel neatly into a corner for a smaller plantroom footprint. Models up to 2000 Ltrs include height-adjustable feet for accurate levelling, and there are 4 × G½" temperature sensor ports for precise control. Multiple buffers can be connected in series or parallel for higher volume.

    For cooling applications that require factory insulation, specify the Flextherm PSK variant. Alternative connections, capacities and operating pressures are available on request.

    £1,737.61 £1,448.01
    In Stock 6 week lead time
    Delivery Icon Free Standard Delivery
  6. Flamco Flextherm PS-K 2000 Chilled Water Buffer Vessel - 2000 Litre

    18264

    Flamco - 2000 Ltr - Flextherm PS-K 2000 Chilled Water Buffer Vessel

    Built for closed chilled-water circuits, this flanged buffer vessel adds stable thermal mass to improve control and flow in cooling installations.

    Installation is straightforward thanks to height-adjustable feet for precise levelling and large flange connections that accommodate high circulation rates. Three G½" temperature-sensor ports simplify monitoring and integration.

    • High-flow ready via oversized flange tappings
    • Fast, accurate setup with adjustable feet
    • Service-friendly robust construction; easy to assemble
    • Instrumentation — 3 × G½" sensor connections

    £5,885.70 £4,904.75
    In Stock 6 week lead time
    Delivery Icon Free Standard Delivery
  7. Flamco Flextherm PS-K 2000 Vapour-Tight Insullation

    18274

    Flamco - Flextherm PS-K 2000 Vapour-Tight Insullation

    Insulation for the Flextherm PS-K 2000.

    Flamco (est. 1956) is a Dutch manufacturer of HVAC and plumbing system components, including expansion vessels, air separators and pressurisation accessories. Their ranges are used in heating and chilled-water circuits and potable water systems across domestic and commercial installations.

    £2,572.08 £2,143.40
    In Stock 6 week lead time
    Delivery Icon Free Standard Delivery
  8. Flamco Contraflex Expansion Vessel - 1000 Litre - 6 bar

    17190

    Flamco - 1000 Ltr - Contraflex Expansion Vessel - 6 Bar

    Flamco - 1000 Ltr - Contraflex Expansion Vessel - 6 Bar

    This is a Spares/Kit item, please get in touch for product compatibility.



    Flamco (est. 1956) is a Dutch manufacturer of HVAC and plumbing system components, including expansion vessels, air separators and pressurisation accessories. Their ranges are used in heating and chilled-water circuits and potable water systems across domestic and commercial installations.

    £1,578.64 RRP £1,026.12 £855.10
    In Stock In stock
    Delivery Icon Free Standard Delivery
  9. Flamco Flexconsole Wall Mounting For Flexcon Expansion Vessel - White - 2 To 25 Litre - 3/4 x 1/2

    27989

    Flamco - 25 Ltr - Flexconsole Wall Mounting For Flexcon Expansion Vessel - White - 2 To - 3/4 x 1/2

    Built for sealed LPHW/CHW systems, this Flexconsole Wall Mounting For Flexcon Expansion Vessel delivers reliable performance with a tidy, installer'friendly form.

    Engineered for day'to'day plantroom demands, it helps maintain stable operation, protects equipment, and simplifies maintenance.

    • Reliable absorption of system expansion
    • Factory pre-charge for quick commissioning
    • Durable diaphragm construction

    Pair with suitable isolation, safety devices and treatment to meet site requirements and best practice.

    £33.82 RRP £22.66 £18.88
    In Stock In stock
  10. Flamco - 25 Ltr - Airfix P Expansion Vessel - 4 Bar

    14559

    Flamco - 25 Ltr - Airfix P Expansion Vessel - 4 Bar

    Built for sealed LPHW/CHW systems, this Airfix Expansion Vessel delivers reliable performance with a tidy, installer'friendly form.

    For use in potable water, or fresh-water installations.

    The Airfix D expansion vessels operate in such a way that the water flows right through and they are continuously flushed with fresh water from the mains.

    This prevents tepid, stagnant water from collecting in the vessel in which bacterial growth could occur.

    Therefore, users can be assured of high quality potable water.

    Applying an Airfix D expansion vessel to a water heater prevents the opening of the safety group or safety valve each time the potable water is heated.

    Engineered for day'to'day plantroom demands, it helps maintain stable operation, protects equipment, and simplifies maintenance.

    • Reliable absorption of system expansion
    • Factory pre-charge for quick commissioning
    • Durable diaphragm construction

    Pair with suitable isolation, safety devices and treatment to meet site requirements and best practice.

    £257.04 RRP £179.93 £149.94
    In Stock In stock
    Delivery Icon Free Standard Delivery
  11. Flamco - 1000 Ltr - Flexcon M Expansion Vessel - 6-10 Bar

    22016

    Flamco - 1000 Ltr - Flexcon M Expansion Vessel - 6-10 Bar

    Built for sealed LPHW/CHW systems, this Flexcon M Expansion Vessel delivers reliable performance with a tidy, installer'friendly form.

    Engineered for day'to'day plantroom demands, it helps maintain stable operation, protects equipment, and simplifies maintenance.

    • Reliable absorption of system expansion
    • Factory pre-charge for quick commissioning
    • Durable diaphragm construction

    Pair with suitable isolation, safety devices and treatment to meet site requirements and best practice.

    £6,681.09 RRP £4,342.72 £3,618.93
    In Stock In stock
    Delivery Icon Free Standard Delivery
  12. Reflex N Closed Heating & Cooling System Pressure Vessel - 800Ltr

    n800l

    Reflex - N800 Closed Heating & Cooling System Expansion Vessel - 800Ltr

    The Reflex N 800 diaphragm expansion vessel is designed for sealed heating and cold water systems, providing reliable pressure control in closed-system installations.

    £2,120.33 RRP £1,484.23 £1,236.86
    In Stock In stock
    Delivery Icon Free Standard Delivery
  13. Flamco Airfix D 12 Expansion Vessel - 12 Litre - 10 bar

    14349

    Flamco - 12 Ltr - Airfix D 12 Expansion Vessel - 10 Bar

    Designed for mains-fed potable and fresh water systems, the Flamco Airfix D Expansion Vessel is a full flow-through potable vessel that prevents stagnation and nuisance safety-valve discharge by absorbing thermal expansion.

    For use in potable water, or fresh-water installations.

    The Airfix D expansion vessels operate in such a way that the water flows right through and they are continuously flushed with fresh water from the mains.

    This prevents tepid, stagnant water from collecting in the vessel in which bacterial growth could occur.

    Therefore, users can be assured of high quality potable water.

    Applying an Airfix D expansion vessel to a water heater prevents the opening of the safety group or safety valve each time the potable water is heated.

    A synthetic flow-through insert and the supplied brass flow-dividing T-piece (3 R ¾") divert all connection flow through the vessel, continuously flushing it to inhibit bacterial growth. The butyl diaphragm is taste/odour neutral, while corrosion-resistant internal coatings protect both water and nitrogen sides. Each vessel is factory tested, nitrogen pre-charged for longer pre-pressure retention, and internationally approved.

    • Flow-through operation constant refresh prevents tepid, stagnant water
    • Protects safety devices reduces safety-valve lift and leakage risk
    • Potable-safe butyl diaphragm adds no colour, odour or taste
    • Efficient & hygienic no waste of potable water during operation
    • Durability vessel halves coated before assembly; clamp ring protected
    • Nitrogen pre-charge for better long-term pressure stability
    • Includes: special brass flow-dividing T-piece (3 R ¾")
    • Optional: Airfixcontrol for quick annual pre-charge checks

    £180.50 RRP £117.32 £97.77
    In Stock In stock
    Delivery Icon Free Standard Delivery
  14. Flamco Airfix D 18 Expansion Vessel - 18 Litre - 4 bar

    14459

    Flamco - 18 Ltr - Airfix D 18 Expansion Vessel - 4 Bar

    Designed for mains-fed potable and fresh water systems, the Flamco Airfix D Expansion Vessel is a full flow-through potable vessel that prevents stagnation and nuisance safety-valve discharge by absorbing thermal expansion.

    For use in potable water, or fresh-water installations.

    The Airfix D expansion vessels operate in such a way that the water flows right through and they are continuously flushed with fresh water from the mains.

    This prevents tepid, stagnant water from collecting in the vessel in which bacterial growth could occur.

    Therefore, users can be assured of high quality potable water.

    Applying an Airfix D expansion vessel to a water heater prevents the opening of the safety group or safety valve each time the potable water is heated.

    A synthetic flow-through insert and the supplied brass flow-dividing T-piece (3 R ¾") divert all connection flow through the vessel, continuously flushing it to inhibit bacterial growth. The butyl diaphragm is taste/odour neutral, while corrosion-resistant internal coatings protect both water and nitrogen sides. Each vessel is factory tested, nitrogen pre-charged for longer pre-pressure retention, and internationally approved.

    • Flow-through operation constant refresh prevents tepid, stagnant water
    • Protects safety devices reduces safety-valve lift and leakage risk
    • Potable-safe butyl diaphragm adds no colour, odour or taste
    • Efficient & hygienic no waste of potable water during operation
    • Durability vessel halves coated before assembly; clamp ring protected
    • Nitrogen pre-charge for better long-term pressure stability
    • Includes: special brass flow-dividing T-piece (3 R ¾")
    • Optional: Airfixcontrol for quick annual pre-charge checks

    £217.03 RRP £141.07 £117.56
    In Stock In stock
    Delivery Icon Free Standard Delivery
  15. Flamco Airfix D 35 Expansion Vessel - 35 Ltre - 4 bar

    14659

    Flamco - Airfix D 35 Expansion Vessel - 35 Ltre - 4 Bar

    Designed for mains-fed potable and fresh water systems, the Flamco Airfix D Expansion Vessel is a full flow-through potable vessel that prevents stagnation and nuisance safety-valve discharge by absorbing thermal expansion.

    For use in potable water, or fresh-water installations.

    The Airfix D expansion vessels operate in such a way that the water flows right through and they are continuously flushed with fresh water from the mains.

    This prevents tepid, stagnant water from collecting in the vessel in which bacterial growth could occur.

    Therefore, users can be assured of high quality potable water.

    Applying an Airfix D expansion vessel to a water heater prevents the opening of the safety group or safety valve each time the potable water is heated.

    A synthetic flow-through insert and the supplied brass flow-dividing T-piece (3 R ¾") divert all connection flow through the vessel, continuously flushing it to inhibit bacterial growth. The butyl diaphragm is taste/odour neutral, while corrosion-resistant internal coatings protect both water and nitrogen sides. Each vessel is factory tested, nitrogen pre-charged for longer pre-pressure retention, and internationally approved.

    • Flow-through operation constant refresh prevents tepid, stagnant water
    • Protects safety devices reduces safety-valve lift and leakage risk
    • Potable-safe butyl diaphragm adds no colour, odour or taste
    • Efficient & hygienic no waste of potable water during operation
    • Durability vessel halves coated before assembly; clamp ring protected
    • Nitrogen pre-charge for better long-term pressure stability
    • Includes: special brass flow-dividing T-piece (3 R ¾")
    • Optional: Airfixcontrol for quick annual pre-charge checks

    £314.64 RRP £204.52 £170.43
    In Stock In stock
    Delivery Icon Free Standard Delivery
  16. Flamco Airfix D-E 100 Expansion Vessel - 100 Litre - 10 bar

    14750

    Flamco - 100 Ltr - Airfix D-E 100 Expansion Vessel - 10 Bar

    Engineered for potable and general water services, the Flamco Airfix D-E Expansion Vessel uses a full flow-through construction to prevent stagnation and support hygienic, high-quality water delivery.

    A replaceable butyl bladder (DIN 4807/5) is formulated to add no colour, odour or taste, while a coated two-way system connection ensures complete vessel flow-through with low pressure drop. The Airfix D-E includes a pressure gauge with blow-back protection, nitrogen pre-charge for long pre-pressure retention, and an anti-oxidation coating on the inside of the connection flange.

    • Full flow-through design to minimise bacterial growth
    • Potable-safe bladder — no impact on taste, colour or odour
    • Nitrogen pre-charge for longer pressure stability
    • Coated flange & two-way connection to prevent oxidation and ensure flushing

    £4,659.72 RRP £3,028.82 £2,524.02
    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.