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The Zilmet OEM-PRO 12-Litre Expansion Vessel is a high-quality, space-saving safety component designed to manage thermal expansion within sealed central heating systems and domestic combi or system boilers. When water is heated, it expands; in a sealed loop, this volume change creates rapid pressure spikes. The OEM-PRO vessel houses a pressurised air cushion that absorbs this fluctuating fluid volume, stabilising internal pressure and preventing the boiler’s 3-bar safety relief valve from lifting or dripping.
- High quality and compact heating expansion vessel suitable for boilers
- Flat and round, crimped or welded, carbon steel shell
- Synthetic SBR rubber membrane according to DIN4807-3
- Brand
- Zilmet
- Guarantee
- 5 Years
- Category
- Expansion Vessel - Heating
- Product Code
- 775-146-0123
- Size
- 12 Litres
- Main Material
- Carbon Steel
- Main Colour
- Grey
- Box Quantity
- 1
- Weight
- 4700 g
- Width
- 324 mm
- Height
- 166 mm
- Diameter
- 324 mm
- Max Pressure
- 3 Bar
- GTIN
- 0708747451214
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Our delivery policy
We will deliver goods as soon as we can. An estimated delivery date will be provided on the checkout pages. For 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 within 40 miles of our Dorchester branch. We deliver via courier to other areas of the UK excluding the channel islands.
See our 'Terms of Sale' for more information on our delivery policy. -
Our returns policy
Please see our 'Terms of Sale' for more information regarding our Returns Policy.