The invention relates to a paraffin type
thermostat. The paraffin type
thermostat comprises a main valve 1, a cover and seal
gasket assembly 2, an upper support 3, a rubber
pipe 4, a
valve seat 5, a vent hole 6, a lower support 7, paraffin 8, an
inductor 9, a
bypass valve 10, a central rod 11 and a spring 12. The upper support, the lower support and the
valve seat of the
thermostat are riveted into a whole. The upper end of the central rod is fixed to the center of the upper support. The lower portion of the central rod is inserted into a central hole of the rubber
pipe. The lower end of the central rod is conical. A cavity between the rubber
pipe and a shell of the
inductor contains the paraffin. The upper portion and the lower portion of the shell of the
inductor are provided with the main valve and the
bypass valve which are in linkage. The vent hole is formed in the main valve. The paraffin type thermostat is high in heat
conductivity and guarantees that an engine cannot be excessively cold.