Fluid handling – Removable valve head and seat unit – Retained by bonnet or closure
Patent
1997-02-25
1998-01-27
Ferensic, Denise L.
Fluid handling
Removable valve head and seat unit
Retained by bonnet or closure
1375272, 1375274, 137557, 251337, F16K 2500
Patent
active
057113416
ABSTRACT:
A swing-check valve for controlling fluid flow includes a valve housing and a valve assembly that engages a removable cover of the valve housing for rigid positioning of the valve assembly within the interior of the valve housing when the cover is mounted to the housing. Moreover, the valve assembly includes a valve seat subassembly in addition to a clapper subassembly and a spring subassembly. The valve seat subassembly includes a valve seat that is frictionally disposed within a port of the valve housing for controlling fluid flow therethrough when the cover is fastened to the valve housing. The clapper subassembly includes a clapper pivotal between a first position in engagement with the valve seat for blocking fluid flow through the port and a second position for permitting fluid flow through the port. The spring subassembly includes a spring and a spring base engageable with the clapper subassembly for urging the clapper into the first position. In one embodiment, the clapper subassembly includes a pivot arm having a roller which engages the spring base and, in another embodiment, the clapper subassembly includes a cam arm on the clapper which engages the spring base. No fasteners are provided for the valve assembly within the interior of the valve housing and, furthermore, upon the unfastening and removal of the cover, the valve assembly can be removed as a single modular unit from the valve housing by simple manual manipulation.
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Funderburk Robert Vernon
Price Timothy Duane
Conbraco Industries, Inc.
Ferensic Denise L.
Kim Joanne Y.
LandOfFree
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