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REFLEX-8216300
Reflex - N Closed Heating & Cooling System Pressure Vessel - 100LtrReflex N, diaphragm expansion vessel for sealed heating and cooling systems, built acc. This product is manufactured by Reflex. to EN 13831. Approval acc. to EU Pressure Equipment Directive 2014/68/EU.
£344.28 RRP £241.00 £200.83
In stock
Free Standard Delivery
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REFLEX-8213300
Reflex - N Closed Heating & Cooling System Pressure Vessel - 200LtrReflex N, diaphragm expansion vessel for closed heating and cooling systems, built acc. This product is manufactured by Reflex. to EN 13831. Approval acc.
£570.96 RRP £399.67 £333.06
In stock
Free Standard Delivery
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RE-8214300
Reflex - N Closed Heating & Cooling System Pressure Vessel - 250LtrReflex N, diaphragm expansion vessel for closed heating and cooling systems, built acc. This product is manufactured by Reflex. to EN 13831. Approval acc.
£687.62 RRP £481.33 £401.11
In stock
Free Standard Delivery
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RE-8215300
Reflex - N Closed Heating & Cooling System Pressure Vessel - 300LtrReflex N, diaphragm expansion vessel for closed heating and cooling systems, built acc. This product is manufactured by Reflex. to EN 13831. Approval acc.
£818.76 RRP £573.13 £477.61
In stock
Free Standard Delivery
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RE-8218000
Reflex - N Closed Heating & Cooling System Pressure Vessel - 400LtrReflex N, diaphragm expansion vessel for closed heating and cooling systems, built acc. This product is manufactured by Reflex. to EN 13831. Approval acc.
£1,053.14 RRP £737.20 £614.33
In stock
Free Standard Delivery
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RE-8218300
Reflex - N Closed Heating & Cooling System Pressure Vessel - 500LtrReflex N, diaphragm expansion vessel for closed heating and cooling systems, built acc. This product is manufactured by Reflex. to EN 13831. Approval acc.
£1,183.68 RRP £828.58 £690.48
In stock
Free Standard Delivery
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RE-8218400
Reflex - N Closed Heating & Cooling System Pressure Vessel - 600LtrReflex N, diaphragm expansion vessel for closed heating and cooling systems, built acc. This product is manufactured by Reflex. to EN 13831. Approval acc.
£1,382.76 RRP £967.93 £806.61
In stock
Free Standard Delivery
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7200310
Reflex - HW Home Booster Expansion Vessel - 25LtrWRAS approved horizontal design diaphragm expansion vessel for mains water installations Built and tested according to EN 13831 Approval according to 2014/68/EC directive for pressure equipment.
£78.53 RRP £54.97 £45.81
In stock
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n800l
Reflex - N Closed Heating & Cooling System Pressure Vessel - 800LtrReflex N, diaphragm expansion vessel for closed heating and cooling systems, built acc. This product is manufactured by Reflex. to EN 13831. Approval acc.
£2,120.33 RRP £1,484.23 £1,236.86
In stock
Free Standard Delivery
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17820
Flamco - 200 Ltr - Flamcomat FG VesselPurpose-built for EN 12828 heating and chilled-water systems, this multifunction sealed-system unit combines automatic expansion control, pressurisation, deaeration and make-up in a single package. Capacity 200 Ltr.
£29,768.23 £24,806.86
In stock
Free Standard Delivery
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17821
Flamco - 300 Ltr - Flamcomat FG VesselPurpose-built for EN 12828 heating and chilled-water systems, this multifunction sealed-system unit combines automatic expansion control, pressurisation, deaeration and make-up in a single package. Capacity 300 Ltr.
£29,213.44 £24,344.53
In stock
Free Standard Delivery
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17822
Flamco - 400 Ltr - Flamcomat FG VesselPurpose-built for EN 12828 heating and chilled-water systems, this multifunction sealed-system unit combines automatic expansion control, pressurisation, deaeration and make-up in a single package. Capacity 400 Ltr.
£29,215.08 £24,345.90
In stock
Free Standard Delivery
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17823
Flamco - 500 Ltr - Flamcomat FG VesselPurpose-built for EN 12828 heating and chilled-water systems, this multifunction sealed-system unit combines automatic expansion control, pressurisation, deaeration and make-up in a single package. Capacity 500 Ltr.
£29,216.71 £24,347.26
In stock
Free Standard Delivery
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17824
Flamco - 600 Ltr - Flamcomat FG VesselPurpose-built for EN 12828 heating and chilled-water systems, this multifunction sealed-system unit combines automatic expansion control, pressurisation, deaeration and make-up in a single package. Capacity 600 Ltr.
£29,774.89 £24,812.41
In stock
Free Standard Delivery
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17825
Flamco - 800 Ltr - Flamcomat FG VesselPurpose-built for EN 12828 heating and chilled-water systems, this multifunction sealed-system unit combines automatic expansion control, pressurisation, deaeration and make-up in a single package. Capacity 800 Ltr.
£29,220.00 £24,350.00
In stock
Free Standard Delivery
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17826
Flamco - 1000 Ltr - Flamcomat FG VesselPurpose-built for EN 12828 heating and chilled-water systems, this multifunction sealed-system unit combines automatic expansion control, pressurisation, deaeration and make-up in a single package. Capacity 1000 Ltr.
£29,778.23 £24,815.19
In stock
Free Standard Delivery
Heating Expansion Vessels
Heating expansion vessels are a key part of any sealed heating system. As water heats up, it naturally expands. Without a vessel in place, that increase in pressure could damage boilers, pumps, or pipework. An expansion vessel safely absorbs the excessive pressure, keeping the system balanced and protected.
By reducing pressure spikes and stress on components, heating expansion vessels help extend the life of your equipment and keep heating systems working reliably day after day. Available in a range of sizes and specifications, they’re designed to suit everything from small domestic systems to larger commercial applications.
At Pumpify, you’ll find a range of heating expansion vessels from big-name brands such as Lowara, Zilmet, Reflex, and Flamco. In most cases, they're relatively small. You may even have one in your home or office already! We make it simple to choose the right one and keep your setup running as it should.