Generally installed at the end of steam-heated pipelines, it can automatically distinguish between steam and water, continuously discharging condensate from steam-heated pipelines to the outside, thereby achieving the purpose of automatically blocking steam and draining water. Widely used in petrochemical, food and pharmaceutical, power plant and other industries. It can be divided into: inverted bucket steam trap, pilot inverted bucket steam trap, lever float steam trap, thermodynamic (disc) steam trap, thermostatic (bimetallic) steam trap, thermostatic (capsule) steam trap, and pump-type steam trap, etc., according to function, shape and other standards.