The Hydraulic Check Valve Spring provides the necessary force to keep the valve closed when there is no flow and backflow, preventing reverse flow in the system. When there is flow in the desired direction, the pressure differential across the valve overcomes the spring force, allowing the valve to open and permit fluid or gas flow. Once the flow stops, the spring returns the valve to its closed position, preventing backflow and maintaining system integrity.Attributes:• Has a maximum solid length of 53.1 millimeters.• Has a spring rate of 18.286 newtons per millimeter.• The direction of the coil is right hand.• Total coils are 11.5 millimeters.• Active coils are 9.5 millimeters.Applications: The Hydraulic Check Valve Spring is located inside the body of a hydraulic check valve to regulate valve opening and closing by applying the required preload, ensuring that fluid flows only in one direction.