Professional Records
License Records
George J Paptzun
Address:
Lansdale, PA 19446
License #:
PE034809E - Expired
Category:
Engineers
Type:
Professional Engineer
George Paptzun Phones & Addresses
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1134 Thomas Rd, Lansdale, PA 19446 (215) 361-7188
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North Wales, PA
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Sellersville, PA
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Griffith, IN
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Amarillo, TX
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Fitzwilliam, NH
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Ambler, PA
Publications
Us Patents
Recirculation Valve
View pageUS Patent:
51727161, Dec 22, 1992
Filed:
Jul 1, 1991
Appl. No.:
7/723959
Inventors:
George J. Paptzun - North Wales PA
Assignee:
Keystone International Holdings Corp. - Wilmington DE
International Classification:
G05D 1100
US Classification:
137117
Abstract:
A recirculation valve for cooling a centrifugal pump. The invention comprises a valve casing having a first chamber for connection to a centrifugal pump and a second chamber for connection to a fluid outlet, a recirculation port for redirecting fluid from the first chamber to the centrifugal pump. Between the first and second chambers is a check valve means for permitting fluid flow from the first to the second chamber. Connected to the check valve means is a hollow cylindrical valve stem permitting flow from the first chamber to the second chamber. The check valve means is comprised of a circular disc which opens when the fluid pressure in the first chamber exceeds the fluid pressure in the second chamber and closes when the fluid pressure in the second chamber approaches that in the first and intermediate chambers. A two angle control surface between the check valve disc and the valve casing controls the position of the check valve relative to the flow of fluid past the valve. A recirculation valve means caused by the hollow cylindrical tube controls the amount of fluid flowing from the first chamber to the recirculation port.