Bimetallic Steam Trap Working Principle

BK Type Bimetallic Steam Trap produced by us Goole Valve mainly applies the bimetallic strip's Expansion and  Contracting Property to close and opent the valve..

When condensate occurred, the temperature will be lower, which will cause the inside Bimetallic Strip contracted, and the steam trap will be open at the same time and the condensate flow out after that.

After the condensate have been drained, the continuously flowing steam will heated the bimetallic strip to make it expanding. Thus the steam trap will be closed and the steam will be sealed inside the valve so as to prevent it from leakage.

If the Bimetallic Steam Trap cannot drain anything, the system steam pressure and temperature might be too high, which will stop the valve opening. Under this condition, users can tighten the bonnet bolt first, then loosen it for 6-7 circles so as to loose the valve bonnet. This can help to reduce the system closing pressure. The bimetal strip can expand and contract freely and condensate can be drained after that.

When the steam trap is open and condensate had been drained, if there's steam flowing out, that might be vapor. Or the valve bonnet might be adjusted too loose, which make the bimetal strip cannot expand to the right place to close the steam trap, Under this condition, users have to adjust the valve bonnet bolt again to tighten the valve bonnet. After adjusting the bonnet bolt well, the bimetallic steam trap can work well and can drain the condensate only and seal the steam inside.