Cooling system thermostat with two opposing valves

摘要: The thermostat has two valves (3,4) opening and shutting in opposite directions between an engine a radiator. plugs (31,41) of both are coupled to one component (51,52) the itself (5), movement taking place against spring (6). first valve (3) opens as coolant heats up, its plug (31) being thrust by seat controlling radiator inlet or outlet. second (4) is open when cold shuts heat increases, (41) off by-pass passage, cylindrical thermostat's piston cylinder (52,51) secured fixed bracket (2) housing (1). plug, which masks axial ports bracket, via cage drive (42) passing through bracket. held sealing face on another after moving for maximum distance.