By-pass solenoid with integral check valve

Year	Description
1999	Invention patented by Carl G. Jr. Gluf on December 8th, 1999. Abstract: A by-pass solenoid (32) with an integral check valve assembly (36) for by-passing excess pump (16) fluid flow. The integral check valve assembly (36) positioned in a first chamber (120) of a valve sub-assembly (52) allows fluid flow from an inlet (34) to an outlet port (40) in a normal mode of operation. Upon actuation of the solenoid sub-assembly (50), the by-pass solenoid (32) diverts excess fluid flow to a by-pass port (42) for re-circulation during periods when fluid flow demand is low and still maintains a fairly constant system pressure. Check valve assembly (36) prevents re-circulated fluid from directly entering the working hydraulic circuit and maintains system pressure. The present invention advantageously provides a compact integral fluid flow control device for bleeding excess pump flow.
Source: selected by the editor from original sources.

Invention: By-pass solenoid with integral check valve