Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent
1997-04-22
1998-11-03
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Assembling, disassembling, or removing cartridge type valve
251 612, 251 614, 251 615, 137556, F16K 4300, F16K 31126
Patent
active
058294732
ABSTRACT:
A hydraulic control valve comprising a housing fitted with an inlet port and an outlet port, a sealing port intermediate the inlet port and the outlet port, dividing the housing into an inlet chamber and an outlet chamber with a diaphragm sealingly dividing the outlet chamber and forming a first control chamber at one side of the diaphragm and comprising a first control port. A stem is connected to the diaphragm and is axially displaceable within the housing and a sealing member is fixed to the stem and is shiftable between a first position in which the sealing port is open and a second position in which the sealing port is closed. The housing further comprises a releasably retained partition plate sealingly dividing the outlet chamber so as to form a second control chamber at a second side of the diaphragm and a second control port, the plate having an opening for slidingly and sealingly supporting the stem. The valve is operable in either a first operative mode where the partition plate is removed from the housing and the second control port is sealed, or a second operative mode where the partition plate is retained within the housing and the second control port is aired.
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Chaplinskii, A. V., "Pneumatic Diaphragm Actuating Mechanisms", Instrumentation and Control, No. 9, pp. 27-31, Sep. 1970.
Bahir Yizhar
Hajbi Yeheskiel
Naor Giora
Dorot Valve Manufacturers
Walton George L.
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