hydraulic relief valve, main valve, excavator spare part used on Hitachi, CAT, Komatsu, Shinko, Daewoo, Hyundai, Sunward ENGINEMODELINSTALLATION ... -3main valveM27x234.3MPA HitachiEX200-3filling valve G3/436.7MPA HitachiEX200-2/3 pressure compensating valve M27x234.3MPA CATCAT320 filling valveG3/438 ... M24x1.528.0MPA ZoomlionSE230LCmain valve M24x1.531.9/34.3MPA excavator spare part