LPCB Type Ae and FM approved fire sprinkler tanks as manufactured by CST Vulcan incorporate a rubber liner manufactured from material generally known as EPDM. This material is not WRC approved for use with potable water.
A BUTYL rubber liner manufactured from material that has received WRC approval (BS6920) and is listed by the Water Byelaws Scheme as approved for use in contact with potable water is available for lining potable water tanks.
