Fluid handling – Systems – Multi-way valve unit
Patent
1998-10-15
1999-12-07
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
13762569, F15B 1302
Patent
active
059966270
ABSTRACT:
A fluid diaphragm pump is provided with a means for controlling the flowrate of fluid to the main fluid valve. Specifically, in the main fluid valve, a sleeve accommodates a sliding spool. The sleeve may include control orifices disposed at either end of the sleeve for controlling the flowrate of fluid past the spool to the outlet of the main fluid valve. The pilot valve housing may also include removable inserts for regulating the flow of fluid to the inlet side of the main fluid valve which results in a restriction of the flowrate of fluid to the main fluid valve. In both embodiments, the flowrate can be changed by either changing one or more components of the sleeve to increase or decrease the diameter of the control orifices or by removing the inserts in the pilot valve housing to either increase or decrease the diameter of the control orifices defined in by the inserts.
REFERENCES:
patent: 2767689 (1956-10-01), Moog
patent: 2920650 (1960-01-01), Moog
patent: 3385166 (1968-05-01), Kroffke
patent: 3418002 (1968-12-01), Hennells
patent: 3799200 (1974-03-01), Tipton
patent: 4085655 (1978-04-01), Olson
patent: 4377183 (1983-03-01), Johansson et al.
patent: 4509556 (1985-04-01), Scanlon
patent: 4770209 (1988-09-01), Neff
Michalsky Gerald A.
Warren Rupp, Inc.
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