REFRIGERANT RETENTION CONTROL VALVE R22 R32 R410 R407 R404 COMPRESSOR

THIS VALVE ONTROL SHRADER VALVE CORE OF ACCESS FITTING, ELIMINATE SPRAYING OF LEAK-DETECTION DYE & REFRIGERANT, ALSO RETAIN REFRIGERANT IN HOSE WHEN DISCONNECTION. 

HS-1221 R410A R32

HS-1222 R22 R404A R407C