Steam trap with bimetal valve control

A steam trap including a fluid inlet port, a fluid outlet port, valve means for controlling fluid flow through said steam trap from said inlet port to said outlet port and a bimetallic assembly responsive to temperature variations for controlling opening and closing of said valve means, said bimetallic assembly comprising a plurality of bimetallic members having insert means separating each of said bimetallic members from a next adjacent bimetallic member, said bimetallic assembly being configured as an elongated stack with said bimetallic members arranged to vary the length of said stack by temperature responsive movement of each of said bimetallic members between a first position at a higher temperature and a second position at a lower temperature, said bimetallic members and said inserts being arranged to effect variation in the length of said stack when said bimetallic members move between said first and said second positions, and means interconnecting said bimetallic assembly with said valve means to open or close said valve means in response to movement of said bimetallic members between said first and said second positions, both said bimetallic members and said insert means comprising a generally annular curved configuration with said bimetallic members being configured with a convex side and a concave side and adapted to reverse said concave side and said convex side thereof when moving between said first and second positions, the curvature of said bimetallic members generally conforming to the curvature of said insert means when said bimetallic members are in one of said first and said second positions.