... 2. long working life; 3.Steering Valve; 4. Model 7-8 for Komatso; We are the reliable manufacturer of Hydraulic ... parts, We can supply SPARE PART FOR EXCAVATOR, HYDRAULIC BREAKER/ROCK HAMMER back head, cylinder, front head, ... bolt, rod pin, stop pin, piston, seal housing, valve, accumulator plug and so on. Our products can match ... SOCOMECT, NOAHTECH. KOMATSU EXCAVATOR MODEL 7-8 GENUINE CONTROL VALVE