Because of the elastic element (spring) and the moving mass (cone valve) is present, hydraulic repair facility, constitute the conditions for an oscillation, and the pilot valve chamber underway before a resonant cavity effect, so the vibration of the cone valve occurs easily resonance entire valve and noisy, mixer hydraulic repair, and more generally accompanied by intense pressure beats noise occurs. Hydraulic transmission with torque converter replaced the mechanical transmission in the clutch, with piecewise variable speed capability. Its advantage is having a close hyperbolic output torque - speed characteristics, with the rear of the power shift transmission can automatically match the mechanical load and prevent power transmission overload. Converter power density is large and the load stress is lower, hydraulic repair, mass production and high costs nor it can be widely applied to medium-sized shovel earth machinery, material handling machinery and vehicles, tanks and other high-speed vehicle. However, their characteristics and layout to match the restricted, less variable torque range, dynamic braking ability, not suitable for applications requiring speed and stability of the occasion. Hydraulic Repair mixer _ Xi'an-through hydraulic maintenance (certification) _ Hydraulic Repair Xi'an Chengtong hydraulic maintenance Limited. Xi'an-hydraulic-repair Ltd. (www.xayeya.com) (www.xayeya.com) is Xi'an, industrial maintenance, installation of leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Xi'an Chengtong hydraulic service leadership with the staff warmly welcome all inquiries negotiations to create Xi'an Chengtong hydraulic service better future.