What is Duotight?
Duotight fittings are high-performance rigid beverage tubing connectors that use a "push-fit" design. Inside, a stainless steel collet grips the tube while two internal O-rings create the seal.
Material Update: KegLand recently upgraded Duotights to include one EPDM and one Silicone O-ring. This hybrid design ensures a perfect seal across different temperatures and pressures, combining chemical resistance with cold-weather flexibility.
Monotight are the original plumbing and irrigation fittings with single internal O-ring.
EVABarrier Tubing
PVC/BPA-free, Double-Walled Protection: Features a smooth, PVC-free inner layer for flavor purity and a high-barrier outer layer that prevents oxygen ingress and CO2 loss
Superior Balancing: The rigid walls allow for smaller internal diameters (like 4mm), giving you proper flow resistance in much shorter line lengths than traditional vinyl
Sizing Options
6.5mm OD: The compact choice. Pairs with 4mm ID tubing. Perfect for tight shanks or small-scale draft setups where space is at a premium.
8mm OD: The most popular standard. Pairs with 4mm ID for kegerator beer lines and 5mm ID for gas lines and longer draft lines.
9.5mm (3/8") OD: Used for higher flow rates, typically with 6.3mm ID tubing for main gas trunks or large manifolds.
Why Choose Duotight Over Barbs?
Speed: Assemble or teardown your entire draft leak-free in seconds. No tools required.
Reusability: Simply push the collar to release the tubing. No more cutting expensive lines off barbs.
Better Flavor: Designed specifically for EVABarrier tubing, which is PVC/BPA-free and provides a superior oxygen barrier compared to standard vinyl.
Reliability: The dual-material O-rings stay pliable even in a 38°F kegerator, preventing the "cold creeps" (slow leaks) common with traditional clamps.
Tip: To get a perfect seal, use a dedicated Tube Cutter to ensure a perfectly square, 90-degree cut so the tubing seats flush against the O-rings.