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The Varem Extravarem LC 18-Litre Expansion Vessel is a commercial-grade, WRAS-approved safety device designed specifically for unvented domestic hot water (DHW) storage systems. When water is heated within a sealed, unvented cylinder, it naturally expands. Because water is non-compressible, this expansion creates a dangerous build-up of hydraulic pressure. The Extravarem LC absorbs this expanded water volume into its internal chamber, maintaining a stable system pressure and preventing the cylinder's high-limit pressure relief valve (PRV) from constantly dripping or lifting.
- Expansion vessel with fixed membrane for domestic hot water systems
- Carbon steel body with epoxy-polyester paint finish and stainless steel flange
- Complete with welded wall mounting bracket
- Brand
- Varem
- Category
- Expansion Vessel - Potable
- Product Code
- 634-147-0185
- Size
- 18 Litres
- Main Material
- Stainless Steel
- Main Colour
- White
- Box Quantity
- 1
- Weight
- 3450 g
- Width
- 270 mm
- Height
- 430 mm
- Diameter
- 270 mm
- Min Pressure
- 0.5 Bar
- Max Pressure
- 8 Bar
- GTIN
- 0708747448788
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Collect in-store
Collection available between 7:30 am and 5 pm Monday to Friday, and between 8:00 am and midday on Saturdays.
Please bring your order confirmation with you on collection.
Please wait for us to contact you before making your way to collect your items.Estimated collection Tuesday 30th.
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Our delivery policy
We will deliver goods as soon as possible. An estimated delivery date will be provided on the checkout pages. For in-stock items, this may be as soon as the next day; for out-of-stock items, it may take a few days longer.
Local deliveries are available for customers based within a 10-mile radius of our store in Hayes, West London (UB3 1DS), with free delivery for orders over £100 ex VAT.
Courier deliveries are available to the rest of the UK, excluding Northern Ireland, the Channel Islands, the Isle of Man, the Isle of Wight, Llandudno (Wales) and the Scottish Highlands. Free standard delivery for orders over £250 ex VAT (note that for some products, an additional delivery surcharge may apply).
Please see our 'Terms of Sale' for more information regarding our delivery policy.Order before 2.00pm for estimated delivery between Monday 29th and Thursday 2nd.
There is a delivery surcharge of £3.00 inc. VAT£2.50 ex. VAT for this product, in addition to the standard delivery rate.
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Our returns policy
Please see our 'Terms of Sale' for more information regarding our Returns Policy.
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