G 3/4'' x M34x2 F/M Stainless steel Bulkhead Fitting 40 Bar | Tameson.com
Green Leaf Bulkhead Fittings
Brass Bulkhead Fitting 1/4" NPT Female 1/2" Male Bulk Head Pipe Fitting Coupling | eBay
Proline Series 3/4-in x 3/4-in Threaded Female Adapter Union Fitting in the Brass Fittings department at Lowes.com
Aquarium Bulkhead Fittings (Slip x Slip) | 1/2", 3/4", and 1" Sizes – Aquarium Co-Op
Speedfit Bulkhead Union | Part PI1212S | John Guest Acetal Fittings | Kleen-Rite
Amazon.com: 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 (4 Pieces) : Industrial & Scientific
Banjo Bulkhead Tank Fitting,1 1/2 In,316 SS TF150SS - Walmart.com
Hayward Bulkhead Fitting, 1-1/2 In, PVC, EPDM BFAS1015CES - Walmart.com
Hayward BFA1040TES Hayward Bulkhead Tank Fitting: 4 in Pipe Size, FNPT x FNPT, 5 3/4 in Required Hole Size, EPDM Gasket BFA1040
Air Quick Coupler Bulkhead Fitting (AQC-2)
15870 – Bulkhead Fitting, AN-6 Male to AN-6 Male, Straight, Black | My CMS
Everbilt 1-1/4 in. FIP x MIP Barrel Bulkhead Union with EPDM Washer Fitting 800459 - The Home Depot