These solenoid valves carry WRAS (Water Regulations Advisory Scheme) approval for use on potable / drinking water. If you are in the building trade or even a plumber, most domestic water pipeline installations will most likely require a WRAS approved valve. The ASCO ranges available span across a few different valve types, chosen depending on specific applications. There are some specialist valves available with WRAS approval and latching DC coils, for use with a battery-powered auto-flush sensor (See WC Flushing Service Solenoid Valves). Wras Valve Series 210BM, 262BW, L133D, L160P03, L182D, L182D-BIG, L282D, L282D-BIG.