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The RWC Aquasystem Heating Expansion Vessel, finished in red, is designed to manage thermal expansion in heating systems effectively. With an 18-liter capacity and a 1.5 Bar pressure rating, it is suitable for a range of domestic and commercial applications. The vessel features an internal membrane that isolates water from the steel shell, preventing internal corrosion and ensuring long-lasting performance. A replacement membrane is included, allowing for easy servicing without the need to remove the vessel. It also comes equipped with a pre-charge valve for convenient air pressure adjustments, offering flexibility and reliability. Available in various sizes to meet different system requirements, this expansion vessel is a durable and practical choice. Please note that brackets are not included and must be purchased separately.. RWC Aquasystem Heating Expansion Vessel Red 1.5 Bar - 18l Reliance Water Controls (RWC) XVES100050