Thermostatic valve for regulating coolant of cooling circuit of heat engine of motor vehicle, has secondary shutter with elastic support unit that maintains main shutter in seal support position against main seat

摘要

The valve (1) has main and secondary shutters (30, 40) movable relative to main and secondary seats (12A, 31B), respectively, and controlled in displacement by a movable part (21) i.e. shell, of a thermostatic element (20) and in opposite direction by a pull off spring (50). The secondary shutter has an elastic support unit (45) i.e. elastic tab, which presses the main shutter against the main seat and maintains the main shutter in a seal support position against the main seat when the secondary shutter is moved between seal support and opposite spacing positions of the secondary seat.