Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent
1987-05-26
1988-09-06
Schwadron, Martin P.
Fluid handling
With repair, tapping, assembly, or disassembly means
Assembling, disassembling, or removing cartridge type valve
92151, 137599, 251 635, 251367, F16K 1122, F16K 2702
Patent
active
047685441
ABSTRACT:
A digital valve unit comprised of a plurality of valve orifice sections which have orifice sizes in a binary relationship. The orifice sections are detachable from the valve unit such that the unit may be modified to have different size orifices in different combinations. The unit also comprises a plurality of stackable air powered actuators. The valve actuators may each comprise a single or multiple stage, depending on the application required.
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Final Control Elements, Chester Beard, pp. 254-255, Rimbach Publications, 1969.
Beam Benjamin H.
Cato Michael W.
Beam Engineering, Inc.
Hepperle Stephen M.
Schatzel Thomas E.
Schwadron Martin P.
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