This is a General Port diagram for many steering control valves on the market. This diagram is applicable to many Sauer Danfoss, Eaton Char Lynn, and similar aftermarket valves.
Often the valve housing will have cast-in symbols, or a routing diagram
L = Left Turn
P = Pressure IN, usually from the Power Steering Pump
R= Right Turn
T = Return to Tank (Reservoir)
For a PDF view please CLICK HERE