Thermostat valve with electrically heatable operating element

A thermostat valve for a coolant circuit of an internal combustion engine, the thermostat valve comprising a stationary housing containing an electrically heatable thermostatic operating element, a work piston arranged for extension and retraction relative to the housing in response to the thermostatic operating element, a valve element forming a cage-like surrounding to the housing and having a plate-like valve seating flange sealed with respect to the housing and extending outwardly therefrom, the valve element being connected with the work piston for movement with the extension and retraction thereof, a base plate fixed to the housing and supporting a fixed abutment in spaced facing relation to the plate-like flange of the valve element, and a restoring spring disposed between the abutment of the base plate and the plate-like flange of the valve element for loading the valve element.