HYDRAULISCHE RUECKSCHLAGVENTILANORDNUNG FUER EIN RUDERSTEUERUNGSSYSTEM FUER WASSERFAHRZEUGE

摘要

The subject invention is directed to a hydraulic control valve for use between a reversible pump and a rudder operating cylinder in a marine steering system. The valve assembly includes a valve body with first and second fluid passages extending through the body from first and second inlets to first and second outlets. First and second check valves are disposed at the outlets for checking reverse fluid flow through the outlets toward the inlets. Means are included in the body for unseating either of the check valves in response to an increase in pressure in the passage in which the other check valve is disposed. A fluid return passage network is included in the body for connection to a fluid reservoir and intercommunicates the first and second passages. First and second shuttle valves are slidably mounted in the body and are spring biased to an operative position for controlling the fluid flow through the passages.