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Free float steam trap

  • US 5,287,878 A
  • Filed: 10/30/1992
  • Issued: 02/22/1994
  • Est. Priority Date: 10/15/1990
  • Status: Expired due to Term
First Claim
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1. A free float steam trap comprising:

  • a trap casing having an inlet port, an outlet port and a valve chest formed therein;

    a valve seat member attached to a lower portion of the valve chest and having a valve orifice opening through which the valve chest communicates with the outlet port;

    a float valve arranged in a free state in the valve chest, rising and descending in accordance with the water level in the valve chest to directly open and close the valve orifice; and

    a vertical dispersing screen having an upper end, a middle section and a lower end, the middle section including an inlet opening and porous sidewalls located below the inlet opening and the lower end closed by an end member, condensate entering the inlet opening of the middle section of the vertical dispersing screen and exiting through the porous sidewalls, the end member forcing the condensate to flow through the porous sidewalls, the vertical dispersing screen being provided in a fluid inlet through which the inlet port communicates via the inlet opening and the porous sidewalls with the valve chest and located substantially above the valve orifice in order to thrust the float valve away from the valve orifice without pressing the float valve on the valve orifice using the falling condensate.

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