Bimetallic Steam Traps Manufacturers

Bimetallic steam traps operate on the same principle as the balanced-pressure steam trap. The mechanism in this trap is a bimetallic strip formed from two dissimilar metals that have very different coefficients of expansion. As the bimetallic strip is heated, the difference in the expansion rate of the metals causes the strip to bend. The trap is fabricated so that when the strip is heated to the steam’s temperature there, is enough movement to close off the valve. The bimetallic thermostatic trap has a slow response to load conditions, requiring as much as 100°F of sub-cooling and is not self-adjusting to changes in inlet pressure. These traps are suited for superheated steam applications and situations where a great deal of condensate sub-cooling is required to prevent flashings in the return line. Normally these traps are applied to steam-tracing lines that can tolerate partial flooding.