4 - WAY DIRECTIONAL CONTROL VALVE • SMALL AND COMPACT to fit your design requirements. • POSITIVE METERING in either direction with the manually shifting handle. • PRECISION GROUND Iosso PLATED SPOOL that assures long life. • OPTIONAL O'RING PORTS to eliminate leakage. • Std. Port sizes (Consult factory for others). work ports. • 30 - Micron filtration recommended. • Cast Iron Body • IOSSO Plated Steel Spool • Consult Factory for Stainless Steel Spools • Black Nylon Ball Knob

4-way Directional Control AO – CREATING A MODEL CODE FOR AO’S: A O __ __ __ __ __ __ __ __ PORT SIZE: 755 – 3/4” inlet/outlet and 1/2” work ports 120 – #12SAE inlet/outlet and #10SAE work ports SPOOL ACTION: S – Spring center D – Three-position detent F1 – Ball friction detent WC – Norm. close elec. switch (use for S, D and F1) WO – Norm. open elec. switch (use for S, D and F1) SO – Spring offset (P to B and neutral) SO2 – Spring offset (P to B, neutral and P to A) SD – Spring center / detent SF1 – Spring center / friction detent (P to B in friction detent) 2D – Two-position detent P to B D2...

4-way Directional Control SPOOL SCHEMATICS: A A B B P T Tandem Center (T) - Powers cylinder or motor in both directions. Pump unloads to tank when spool is in neutral. Cylinder or motor blocked when spool in neutral. A B P T Open Center (O) - All of the ports are connected to tank when the spool is in neutral. Allows cylinder to move or motor to rotate when spool is in neutral. A B P T Fine Metering Spool (M) - Requires external locking valves to hold cylinder when spool is in neutral position. Extremely fine metering control. This spool requires a pressure compensated pump. P T Closed Center...