Value Collection - 3″ PVC Plastic Pipe Bulkhead Tank Adapter - 37003720 - MSC Industrial Supply
How to Size Bulkhead Fittings - Plumbing Basics, Part 2 - Bulk Reef Supply
Amazon.com: FVIEXE 10PCS 1 Inch PVC Bulkhead Fitting, Double Threaded Bulkhead Water Tank Connector for Rain Barrels, Aquariums, Water Tanks : Industrial & Scientific
Everbilt 3/4 in. Polyoxymethylene Bulkhead Union With Washer Fitting 800479 - The Home Depot
Doolland PVC Bulkhead Fitting Double Threaded Bulkhead Water Tank Connector for Rain Barrels, Aquariums, Water Tanks, Tubs, Pools, Spigot, Black, 3/4 Inch Male 1/2 Inch Female - Walmart.com