How do I distinguish between a regular and a stout dispense-tube? 08 September 2026 08:52 Updated Stout dispense tubes can be identified by the yellow ring on the connector, while regular tubes have a black ring. Related articles How do I set up the Stout dispense tube? I can’t access the Stout feature in the app. When pouring a Camden Stout beer, why is my PerfectDraft machine pouring much slower than normal? Can I use the Stout dispense tube with a keg other than Camden Stout? What is the difference between Stout and regular dispense tubes?