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Dexpro Delux 2ltr Expansion Vessel And Check Valve

£44.40 £37.00
In stock
Delivery Time:
Next Working Day
2 Years
Quick Code:
Order Line:
01977 663331
  • Supplied with check valve
  • Suitable for water heaters 5ltr up to 15ltr

Dexpro Delux 2ltr Expansion Vessel And Check Valve


The Dexpro Delux expansion vessel allows the heated water in the tank to expand naturally.

Unvented water heater systems are basically a closed loop, consisting of the water heater boiler and copper pipework.

Therefore it is necessary to provide some space for the water to expand into.

This is why the expansion vessel is required and must be fitted on the cold water inlet side for all unvented water heaters.


  • Supplied with check valve
  • Suitable for water heaters 5ltr up to 15ltr
Type Expansion Vessel 
Suitable Water Heater Types  5, 6, 10 & 15ltr
Expansion Vessel Volume (ltrs) 2ltrs
Membrane EPDM 
Check Valve Supplied 
Expansion Vessel Charge (Bar)   3.5
Maximum Water Pressure (Bar)   10.0 
Maximum Working Temperature 100C 
Vessel Connections ¾"BSP
Weight (kg) 1.6
Height / Width / Projection (mm) 225 / 150 /  150
EAN 0604220226891



How often should i replace the expansion vessel?

Between 5 and 10 years is the average lifespan of and expansion vessel!

What size water heater is the Dexpro Delux 2ltr expansion vessel suitable for?

The Dexpro Delux is suitable for unvented water heaters from 5ltr up to 15ltrs!

Can you install the expansion vessel horizontally?

The Dexpro Delux expansion tanks can be installed in any direction!

What fittings are supplied with the vessel?

The Dexpro Delux is supplied with the check valve!

Do i need to install this expansion vessel in small unvented water heaters?

If there is a minimum of 1.7m (6ltr) 2.7m (10ltr) 4.2m (15ltr) of 15mm copper pipework in the system with no other draw off points then you do not need to install the expansion vessel. Your plumber will advise you if the expansion vessel is required for your installation!

Our Delivery Charges and times are explained:


Delivery Charges
All deliveries have a standard charge of £7.99 + VAT up to 20kg. Where stated, certain products are delivered FREE of charge (mainland UK only*). Check the description of the desired product and if it says free delivery then you will not be charged for delivery*

Extra Charges
Where the weight is over 20kg we reserve the right to charge more dependent on product type and delivery postcode, our customer service team will be in touch and inform you of any extra charges before we despatch.

Delivery Times
All products will have a delivery time stated in their description. Next Working Day - these products will be delivered Next Working Day if ordered before 12.00, or in certain circumstances up until 4:00 pm. Please call if you require a Next Working Day and we will try our best to get it to you. Certain products will state within 48hrs, within 3 Days or within 5 days. These products will be delivered within the time stated. If you require delivery on a certain day please put this in the comments and we will aim to deliver on that day.

Certain products such as radiators are delivered after 5 working days, when purchasing a radiator please put in the desired delivery date which is 5 working days after ordering. In some cases, stock permitting, we can get radiators out sooner. Please call or put in the customer comments if you need something urgently and we will try our best.

Saturday Deliveries
We can arrange for a Saturday delivery for certain products, please call 01977 663331 for more details.

Please note: Although we will do our utmost to deliver your product in the time stated we cannot be held responsible for any unforeseen delays. Please do not book a plumber, electrician, etc until you have received the goods as we will not be held responsible for their time. Please read our terms and conditions for further details.

additional charges may be applicable dependent on your location please double-check with our customer service team

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