Lever floating ball type steam trap with small volume and large displacement

The utility model relates to a lever floating ball type steam trap with small volume and large displacement, which is structurally characterized in that a valve body (1) is connected with a valve cover (7), a screw plug (3) is arranged at the upper end of the valve body (1), a filter screen (11) is arranged in a cavity (7-1) positioned at the upper end of the right side of the valve cover (7), an end cover (10) is arranged at the end part (7-2) of the cavity (7-1), and an outlet runner (7-5) is arranged in the cavity (7-1). A pressure balance blowoff valve (4) is installed at a threaded hole in the upper portion (7-4) of the left side of the valve deck, control frame assemblies (5) are arranged at the two positions of the lower portion of the valve deck (7), and an auxiliary valve seat (9) is installed at a threaded hole in the bottom of the valve deck (7). The utility model has the beneficial effects that the design of small volume and large discharge capacity reduces the flash evaporation amount in the cavi