When bucher balance valve drops, it has a problem of over damped compensation.Applying F type πbridge hydraulic resistance network to the balance valves pilot damping network could improve pilot hydraulic resistance network of the balance valve.It made the main spool aperture and the load suitable. Thus the phenomenon of the speeding decline and jitter of the weight could be prevented. The drop condition of the πbridge hydraulic resistance network balance valve was simulated. The conclusion is that F type πbridge hydraulic resistance network can overcome the disadvantage of over damped compensation.