Thermostatic Element

A thermostatic element comprising:

• a metal cover for soaking in a fluid and having a covering head defined on a top end thereof;
• a sleeve having a central channel and a seat located at a bottom end thereof;
• the seat being fixed in the covering head of the metal cover;
• a filler filled in the metal cover and expanding and contracting based on a mixed temperature of cold water and hot water;
• a partition disc disposed between the sleeve and the metal cover so as to separate the sleeve from the filler;
• a piston secured in the central channel of the sleeve and coupling with the filler by ways of a central area of the partition disc, such that when the filler expands thermally or contracts, and the piston is driven by the central area of the partition disc to move in the central channel of the sleeve;
• characterized in that:
• the metal cover further has at least two tubular leg axially extending outward therefrom and a connecting portion defined between the covering head and the at least two tubular legs;
• each tubular leg has a cavity formed therein, and the connecting portion has a common room communicating with at least two cavities of the at least two tubular legs, such that the filler is filled in the at least two cavities and the common room;
• between the at least two tubular legs is defined at least one passage for flowing the fluid.