Fluid handling – Hydrant type – Removable valve and valve seat
Reexamination Certificate
2005-08-16
2005-08-16
Lee, Kevin (Department: 3753)
Fluid handling
Hydrant type
Removable valve and valve seat
C251S367000
Reexamination Certificate
active
06929022
ABSTRACT:
A fire hydrant having a valve seat flange with an integral liner. In one embodiment, the fire hydrant includes a valve seat flange disposed between a standpipe and a hydrant shoe. The valve seat flange includes a standpipe neck defining internal threads to directly connect to the standpipe and a base flange to directly connect to the hydrant shoe. The liner includes an outer peripheral edge that is entrapped within the valve seat flange and an inner circumferential surface defining threads for receiving the valve seat of a valve assembly. The present invention also discloses a process of manufacturing a valve seat flange, including the steps of: (a) manufacturing the liner, (b) incorporating the liner into a core with the outer peripheral region of the liner exposed, (c) placing the integral core/liner into the valve seat flange mold and (d) forming the valve seat flange around the liner with the valve seat flange entrapping the outer peripheral region of the liner.
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American-Darling Valve and Waterous, American-Darling 5 1/4″ B-84-B Fire Hydrants, Mar., 1992 brochure.
American Flow Control, Ductile Iron 250 P.S.I., Waterous 5 1/4″ Pacer Fire Hydrant, Mar. 1998 brochure.
Brooks Richard J.
Griffin Bryan J.
Ingalls Todd
Wright Kevin J.
East Jordan Iron Works, Inc.
Lee Kevin
Warner Norcross & Judd
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