Direction of fluid flow is controlled by rotary member 1. In the position shown, fluid from the pump passes from port a through passage d and port b to the system. Port f is connected through passage e to the tank. When the valve is switched over by turning valve member 1 through 45° about fixed axis A-A, either by means of handle 2 or by trip dogs of the machine tool actuating lugs 3, port b is connected through passage e to the tank. Ball-click stop 4 holds the rotary member in the required positions.
$3914$LHP,FC$