A check valve is used in hydraulic systems to control the flow of fluid from the pump case drain line. A drain check valve is designed to allow fluid to flow freely from the pump case drain line to an external reservoir or drain while preventing any reverse flow back into the pump.Attributes:• Withstand the hydraulic system's pressure and fluid compatibility requirements• Providing with Crack pressure exceeding 225 kPa, the check valve opens and allows the fluid to flow out, preventing any potential damage.Applications:A Check Valve is used to ensure the proper functioning of the hydraulic system.