The C/D VALVE MFG CO CD4460S Valve Core is a replacement service component that regulates refrigerant flow and maintains a sealed access point in HVAC and refrigeration systems. This valve core features a tapered positive-stop barrel and a PTFE seal that opens and closes when service equipment is connected or removed, helping control refrigerant movement and system pressure. Installed... https://www.hnkparts.com/c-d-valve-mfg-co