STRUCTURE AND FUNCTION CONTROL VALVE CONTROL VALVE (4-SPOOL) SUPER HIGH-FLOW C B B4 A4 A3 A PA3 B3 Pi J J PB3 H H G G PA2 F F PB2 E E B2 A2 PA1 B1 A1 PB1 D D T P1 B TS A C P2 RKS00370 P1. from gear pump P2: from gear pump T: to tank Ts: to tank Pi2: From solenoid valve group ST2 (S port) A1: to lift arm cylinder (head side) A2: to bucket cylinder (head side) A3: to attachment port A4: to High - Flow port B1: to lift arm cylinder (bottom side) B2: to bucket cylinder (bottom side) B3: to attachment port B4: to High-Flow attachment port 10-35 SK818-5 SK820-5 turbo