Oatey
20 DFU (Drainage Fixture Unit) capacity. Complies to ASSE (American Society of Safety Engineers) Standard 1050 and 1051 for use a a secondary vent. One size approved to handle up to 3' vent pipe. Opens and closes as needed by building's plumbing system, 1-1/2 - 2'.
American Granby NLCBXFC33 Pex Female Adapter NL 1/2P X 1/2 FIP
Genova Products PVC DWV Fittings Reducing Double Sanitary Tee
Apollo Press Caps
Apollo Press Couplings & Unions 3/4 in. Copper Press Coupling with Stop -20 Pack Jar
Anderson Metals 1/2 In. Brass Compression Cap