Hydraulic winch consists of various flow distributors which consisting of one-way balancing valves and various high-pressure shuttle valves for controlling brakes.NYJ model hydraulic winch has its own valve group , It not only simplifies the hydraulic system but also improves the working reliability of the transmission. This hydraulic valve group successfully solves the problem of the empty hook jitter and the secondary slip in the general winch. Since the clutch is provided at the final stage of the transmission, it has the function of freely releasing the hook.