duotight - 6.35mm (1/4inch) Joiner

Duotight push-fit fittings are designed for reliable, leak-free connections in both gas and liquid applications. With a simple push-in design, these fittings allow you to connect tubing in seconds—no clamps, tools, or complicated assembly required.

Perfect for use with carbonation caps, tap shank accessories, and inline regulators, these fittings are built around a 6.3 mm (1/4") connection, making them highly versatile across modern homebrew draft systems.

The standout feature is the double O-ring sealing system, which provides superior performance compared to traditional push-fit fittings. Combined with high-quality EPDM O-rings, this ensures a tighter seal, greater reliability, and significantly reduced risk of leaks—even under pressure or when tubing is bent.

Key Features

Push-Fit Simplicity

• Insert tubing to connect
• Pull back the collet to release
• No clamps or tools required

Double O-Ring Seal

• Twice the sealing surface vs standard fittings
• Improved leak prevention
• Maintains seal integrity even with tight hose bends

High Compatibility

• Designed for 6.3 mm (1/4") fittings
• Suitable for gas and liquid lines
• Works perfectly with EVABarrier 3 mm ID x 6.35 mm OD tubing

Durable & Reliable

• Made with high-quality EPDM O-rings
• Suitable for pressures up to 100 PSI
• Built for long-term use in demanding brewing environments

Usage Tips

• Always cut tubing straight (not angled) for a proper seal
• Ensure tubing is fully inserted into the fitting
• To remove tubing, push in the collet while pulling the hose out

Applications

• Kegerator and draft systems
• Inline regulators
• Carbonation caps
• Tap shank connections
• Beer and gas line setups

Quick Facts

Connection size: 6.3 mm (1/4")
Max pressure: Up to 100 PSI
Seal type: Double EPDM O-ring
Compatibility: EVABarrier tubing (3 mm ID / 6.35 mm OD)
Use: Gas and liquid applications