20mm Caliber~Ball Valve Drum Adapter Barrel Valve Tap Spigot for 200 L - AliExpress
3/4” Male Barrel Faucet White Plastic Manual Handle Drum Faucet PE Plastic Drum Tap for Plastic or Steel Oil Drum or Water Container by GWENB(6PCS) - Amazon.com
3/4-Inch Nickel Plated Brass Drum Tap - DRME110 - New Pig UK