1. Check valve, also known as one-way valve, is to allow the liquid in the pipeline to flow in one direction without backflow. If the check valve is used in the hydraulic system, it can prevent the oil from flowing in the opposite direction. And if it is used in the starting system, it can prevent the reverse flow of compressed air.
2. If an ordinary one-way valve is used, it only has the ability to let the oil flow in a fixed direction. If the one-way valve is installed in the outlet area of the pump, when the pressure suddenly rises, it can avoid damage to the oil pump, play a better check effect, and prolong the service life of the oil pump.