CV-18 wafer spring check valve

when the refrigerant flow to the direction of magnetic check valve ,the clack seat and the diaphragm will open automatically ,and it will close automatically if there is no refrigerant flow into the valve .When the direction which refrigerant flow to magnatic check valve is opposite .the clack seat will be closed , it won't open no matter the pressure reduced .The diaphragm magnatic check valve will use magnatic diaphragm ,metal and metal sealing ,used in exhaust tube on the compressor .IT will use guide device ,self-absorption institution design ,and then the magnatic check valve's installation of angle and the opposite pressure won't take influence on closed automatically of valve ,almost equal to zero leakage on negative direction .