Abstract: A fluid control system includes a directional control valve assembly adapted for use in either an open-center or a closed-center configuration. The system is capable of incorporating one or more control sections, each with a manual control valve and its own individually variable flow control mechanism. Each flow control mechanism is independently responsive to section load pressure, and is capable of controlling the flow rate delivered to its section when the control valve spool is biased to a full power position. Each section contains a kickout mechanism for returning the control valve spool to its neutral position at a predetermined pressure.

Abstract: A fluid control system includes a directional control valve assembly adapted for use in either an open center or a closed center configuration. The assembly is capable of incorporating one or more control sections, each with a manual control valve having its own variable pressure compensated flow controlling mechanism. Motor port lock-out valves are associated with each manual control valve, and a pressure responsive logic circuit automatically actuates the lock-out valves to hold them open when their associated manual control valve is in the power or float positions. When any manual control valve is in the float position, any other manual control valve may be operated in the power positions.