Carbonation & Line Cleaning Cap (Stainless Steel) – Duotight Compatible
This stainless steel Carbonation & Line Cleaning Cap is one of those tools you’ll wonder how you brewed without. Designed for quick carbonation, beer line cleaning, and portable “traveller” bottles, it’s compact, durable, and fully duotight compatible.
The updated design now includes an O-ring seal (instead of the old flat washer), giving you a more reliable, leak-free connection when pressurising or squeezing PET bottles.
Perfect for cleaning kegerator lines, force carbonating beer, or safely transporting beer in PET bottles without oxidation.
Key Features
- Stainless steel construction – durable, sanitary, long-lasting
- Duotight compatible (6.5mm)
- duotight 6.5mm → 8mm reducer
- duotight 6.5mm → 9.5mm reducer
- Liquid & Gas Ball Lock compatible
- Barbed fitting fits 4mm, 5mm & 6mm ID hose
- New O-ring sealing design for improved reliability
- Ideal for line cleaning, carbonation & beer travellers
Use Cases
Clean Beer Lines (Kegerator-Friendly)
Use a PET bottle and this cap to push cleaning solution through your beer lines — fast, effective, and no pumps required.
Beer Travellers / PET Bottles
Safely fill and transport beer using PET bottles with minimal oxygen pickup. Works great for camping, mates’ houses, or festivals.
Quick Carbonation
Need carbonation now? Chill your beer, pressurise using the cap, shake if needed — done.