This refrigerant retainer clip is compatible with the Refrigerant 48" Dip Tube and Refrigerant Liquid/Vapor Stack Valve CGA660 with Dual Outlet. Premium Construction & Features. Polymer with Kynar (PVDF) coating for excellent wear and abrasion resistance. Designed according to both European and U.S. standards. Chemical and Thermal Resistant. Fits 48" Kynar Tube. Fits 1/2" Outer Diameter Tube. Valve and Dip Tube Sold Separately. Rotarex Brand. Must be installed by a qualified cylinder technician due to torque specifications. Compressed gas cylinders and valves are dangerous. Please use caution.