THERMOSTAT VALVE

摘要

Thermostat valve for guiding of coolant flow in a coolant system in an internal combustion engine between, on the one hand, a first and a second channel (4, 5) in the coolant system and, on the other hand, the first channel and a third channel (6) in the coolant system. Said valve consists of, on the one hand, a holder (27) having external attachment members (8) which hold the valve in place in a fixed position in a valve chamber (2), with which said channels communicate, and, on the other hand, a tubular valve body (12) having a first opening (14). The opening is permanently open towards the first channel. An opposite, second opening (15) faces the second channel. The valve body is movable along an axle (16) between a first valve seat (18) which is arranged in the valve chamber at the first channel, and a second valve seat (20) which is supported by the holder. The holder discloses a third opening which is permanently open towards the second channel. The holder supports a temperature-sensitive switch-over mechanism (22) which extends along the axle and is intended to, in dependence upon the temperature of the coolant, switch over the valve body between a first and a second end position. The holder supports, on the one hand, a collar-like casing wall (27) which extends from said attachment members (8) and peripherally connects to the valve body (12) at a distance from the second seat, and, on the other hand, a closed end wall (21) which is adapted to close the second opening (15) of the valve body in the second end position.