Amazon.com: Da by Rain Barrel Spigot Faucet Kit PVC Bulkhead Fitting with Ball Valve and Garden Hose Adapter Barb 16mm(5/8") OD and Stainless Steel Pipe Clamps and Thread Seal Tape(Kit fits 16mm
OATEY 4 in. PVC DWV Saddle Tee Kit 43791 - The Home Depot