Upper overflow valve and lower overflow valve for truck cranes

Core Guarantee for Control: Specialized Control Valve Relief Valves for Construction Machinery, Precisely Compatible with Full Range of Hoisting Equipment As the core hydraulic control components of construction machinery such as truck cranes, crawler cranes, and rough-terrain cranes, the upper control valve relief valves and lower control valve relief valves directly determine the stability and safety of equipment operation, and are the key guarantee for the efficient conduct of hoisting operations. Our company specializes in supplying control valve relief valves dedicated to construction machinery, covering the full range of upper and lower categories. The models are precisely matched with equipment from mainstream OEMs such as S a n y, X C M G, and Z o o m l i o n. From core parameters to installation dimensions, they are strictly aligned with original factory standards, enabling direct adaptation without modification. Adopting high-quality valve cores and sealing materials, the products have undergone cyclic tests under high-pressure working conditions, featuring strong pressure resistance and good sealing performance. They can effectively stabilize the pressure of the hydraulic system, prevent overload impact, and extend the service life of equipment. Relying on the advantage of factory direct supply, we achieve sufficient spot inventory and fast delivery. Meanwhile, we provide quality assurance and technical adaptation guidance services, fully guaranteeing the quality of accessories and installation adaptability. Whether for equipment maintenance and replacement or bulk matching, we can accurately meet the needs, building a solid core defense line for the efficient and safe operation of construction machinery.