Here's a simple, 12 volt ON / OFF Heater Valve operated by a solenoid.
15mm Inlet and Outlet. 1/4" male spade terminals. Inlet has gauze filter.
Size 104mm inlet to outlet x 69mm high x 42mm wide.
Normally closed valve. Opens when 12v applied.
NOTE: This valve will not regulate the water flow. It is just ON or OFF.
SOLENOID OPERATED ON/OFF HEATER VALVE 15mm (5/8") #HVSOL