Whale System 12mm Electric Solenoid Valve. Quick Connect system is suitable for all types of cold and hot water mobile installations and mobile heating systems. Ideal for redirecting water flow for on-board tank filling Can be connected to existing 12 mm plumbing , suitable for both cold and hot water. Fitted with 12 mm Whale Quick Connect fittings for direct connection. Valves remains closed until 12 V d.c. is applied Part Number WU1273 Genuine Whale Part