Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1976-03-04
1977-11-08
Nilson, Robert G.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137514, F16K 1704
Patent
active
040570720
ABSTRACT:
A valve housing has opposed inlet and outlet ports connected by a straight through first passageway. A one-way check valve is mounted in the passageway adjacent the outlet port. A bypass port communicates with the first passageway by means of a second passageway having an inner end providing a valve seat for a bypass valve element in the first passageway. The bypass valve element is connected to a piston movable in a cylindrical chamber in the housing and dividing the chamber into a pressure chamber portion and an outer chamber portion, the outer chamber portion communicating with the exterior of the housing. The piston and bypass valve element are yieldingly urged toward valve closing engagement of the bypass valve element with the valve seat by spring means in the outer chamber portion, the housing further defining a third passageway extending from the first passageway adjacent the outlet port to the pressure chamber portion.
REFERENCES:
patent: 906508 (1908-12-01), Carroll
patent: 3168108 (1965-02-01), Patrick
patent: 3331583 (1967-07-01), Baker
patent: 3411523 (1968-11-01), Lapera
patent: 3451416 (1969-06-01), Nyberg
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