The quality of the air compressor valve block and the accuracy of the valve block directly affect the life and effect of the compressor. The valve block is the most impacted part in the compressor and needs to meet the following standards: the design of the valve block must meet the various requirements of the compressor manufacturer; the valve plate material must be precision stamped; the valve block and the valve seat are well sealed ; Long-term stable performance is the most important; qualitative elasticity and recovery. The valve block is placed at the exhaust port of the upper bearing, its function is to seal the refrigerant in the cylinder, and the refrigerant is compressed in the cylinder. When the compression pressure reaches a certain value, the valve block is pressed open, and the compressed refrigerant flows from the upper bearing. exhaust outlet. If there is no valve block, the inside and outside of the cylinder are not connected, and it cannot play the role of compression. During the compression process, the port is blocked, and the port is opened when exhausting. Its action is determined by the internal pressure of the cylinder.