... backhoe loader 4x4 1,front loader,back digger 2,buffer valve hydraulic system 3,Engine type/power(KW):Weichai ... front loader,back digger ,backhoe loader 4x4small type backhoe loader buffer valve hydraulic system, ensure reliable, efficient, stable job.Adopt ... piece even installed reversing valves, moving arm rotary control assembly buffer valve hydraulic system, ensure reliable, efficient, stable job. ...