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8 Litre Expansion Vessel – Safety for Unvented Hot Water Systems

8 Litre Expansion Vessel – Safety for Unvented Hot Water Systems

£34.79 GBP
£39.99 GBP £34.79 GBP
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Description

The 8 Litre Expansion Vessel is an essential safety component for any unvented hot water system. Specially engineered for compatibility with TESY hot water cylinders ranging from 30 to 150 litres, this vessel ensures your installation remains safe, efficient, and fully compliant with UK regulations. Its robust capacity and compact footprint make it suitable for a wide range of domestic and light commercial applications.

During the heating cycle, water naturally expands. This expansion vessel is designed to absorb that excess water pressure, maintaining stable system conditions and protecting your pipework, appliances, and fittings from unnecessary stress, over-pressurisation, and potential leaks.

Installation & Compliance
Proper installation of an expansion vessel is a strict requirement under UK Building Regulations G3 for any unvented hot water system. For complete peace of mind and system safety, we highly recommend pairing this vessel with a compatible TESY hot water cylinder and a high-quality pressure relief valve. The unit features a standard 22mm thread for straightforward integration into your existing pipework.

Delivery & Support
Enjoy free delivery on all orders over £100, with next working day dispatch available for orders completed before 1pm. If you require trade support or have questions about system compatibility for your specific property, contact our UK technical support office directly on 0161 439 1400.

Specifications

  • Vessel Capacity: 8 Litre expansion volume.

  • System Compatibility: Suitable for hot water cylinders from 30L up to 150L.

  • Dimensions: 345mm in length × 190mm in width.

  • Connection Size: 22mm thread diameter for straightforward connection to standard UK plumbing.

  • Compliance: Fully compliant with UK Building Regulations G3 for unvented systems.

  • Mounting Type: Flexible orientation, designed to keep installation simple without requiring extra wall brackets for most setups.

Key Features & Benefits

  • Absorbs excess water pressure created during the heating cycle to protect your pipework, fittings, and appliances from stress and leaks.

  • Perfect TESY compatibility specifically engineered to pair with unvented hot water cylinders ranging from 30 to 150 litres.

  • Essential G3 compliance component designed to meet stringent UK Building Regulations for safe unvented hot water systems.

  • Space-saving compact footprint allows for an easy, tidy fit inside standard airing cupboards, tight voids, or plant rooms.

  • Maintains stable system pressure throughout the heating cycle, drastically reducing the risk of long-term plumbing wear and tear.
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