Title: Drain trap valve mechanism

Abstract: A float actuated valve mechanism for automatically removing a predetermined amount of accumulated liquid condensate from a sump area of a gas pressurized drain trap or the like so as to regulate the level of liquid in such a sump area. A four-bar linkage between a float and a valve plug provides a non-linearly varying mechanical advantage throughout the movement of the float. In a closed position the valve plug mates with a rigid seating surface and an elastomeric seating surface to provide a wear-resistant seal.

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Inventors: Hilmer, Milton (Quakertown, PA, US)

Application Number: 906930
Filing Date: 1978-05-18
Publication_date: 1980-03-11
Assignee: Sarco Company, Inc. (Quakertown, PA)
Primary Class(es): 137/445 137/192, 137/449, 251/80, 251/279
Other Classes:
US Patent Ref:

1529140	Mar, 1925	Muller	137/445.
1893859	Jan, 1933	Gleason et al.	137/445.
2092670	Sep, 1937	Hess et al.	137/445.
2790456	Apr, 1957	Shaw et al.	137/434.
3324878	Jun, 1967	Dill	137/445.
3363643	Jan, 1968	Skulski	137/445.
3599659	Aug, 1971	Nuter	137/445.
3835882	Sep, 1974	Barker et al.	251/279.
3916945	Nov, 1975	Bennett	137/445.

Other Refs:
Primary Examiner: Schwadron, Martin P.
Assistant Examiner: Walton, G. L.
Attorney: Sessions, Pearne, Gordon