Expansion vessel consisting of a pressure vessel, divided into 2 chambers by a flexible rubber membrane or diaphragm. Trapped air in the closed chamber is pressurised to 3.5 bar, acting as a damper. Single-Appliance Installation Absorbs Shock Easy To Service Compact Size

Price: £14.99 from Screwfix

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Stockist	Product Name	Price
Screwfix	Flomasta Vessel Shock Arrestor 1 1/2" BSP	£14.99	Visit Store