3/4" Barb X 3/4" Female Pipe Thread Non Swivel Adapter Is For Ultra Pex Plumbing Systems. It Is Made From Forged Brass And Certified To B137.5. It Is Made From Forged Brass Which Is 15% Stronger Than Brass Counterparts And Are Free Of Imperfections. This Adapter Is High Quality As It Is Certified By The Canadian Standard For Pex Pipe And Fittings, As It Has Passed Pressure Testing At Three Temperatures. It Has A Maximum Working Pressure Of 690Kpa.