Metering valve for automatic fluid metering devices, particularl

Details Metering valve for automatic fluid metering devices, particularl Metering valve for automatic fluid metering devices, particularl

1994-09-12

1996-08-27

Fox, John C.

Fluid handling

Systems

With flow control means for branched passages

137871, 251120, F16K 1104

Patent

active

055491367

ABSTRACT:
A metering valve wherein an outer casing defines a first and second chamber communicating with each other via a hole and respectively communicating externally of the casing via a fluid inlet conduit and a fluid recirculating conduit. The first chamber also communicates externally via a supply conduit, and houses a shutter movable axially inside the chamber between a first position wherein a first portion of the shutter closes the aforementioned hole, and a second position wherein a second portion of the shutter closes the supply conduit. For any intermediate position between the first and second positions, the total area of the gaps between the supply conduit and the second portion and between the hole and the first portion is notably constant, so that, for any position of the shutter, the total section of the fluid passage of the metering valve is constant.

REFERENCES:
patent: 2169043 (1939-08-01), Goehring
patent: 2916061 (1959-12-01), Hahn et al.
patent: 2933285 (1960-04-01), Tucker
patent: 3180360 (1965-04-01), Pavlin et al.
patent: 3327992 (1967-06-01), Billeter et al.
patent: 3426798 (1969-02-01), Chernak
patent: 4846226 (1989-07-01), Merritt
International Publication WO 88/06690 published Sep. 7, 1988.

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