Duotight - 8mm Inline Check Valve

The Duotight 8 mm Inline Check Valve provides reliable protection for your regulator and is ideal for integration into CO₂ or water lines. It opens at a very low back pressure of just 1 psi, making it suitable for clean liquids like water or for gas applications. Since the valve is not serviceable, it is not recommended for use in beverage lines. Internal components are made of stainless steel. Compatible with EVABarrier tubing with 8 mm OD (5 mm x 8 mm or 4 mm x 8 mm).

Duotight push-in fittings use a dual EPDM O-ring sealing system for maximum leak resistance and durability. Even in tight bends, the connection remains secure without the need for hose clamps.

Features:

• Inline check valve for gas or water lines

• Low opening pressure (1 psi)

• Push-in connection for 8 mm outer diameter tubing

• Dual EPDM seals for high chemical resistance

• Internal stainless steel locking teeth

• No hose clamps required

• Rated for up to 10 bar (150 psi)

• Temperature resistant up to 100 °C

Note: Do not use with chlorine-based cleaners (e.g. bleach), as they may damage plastic and stainless steel components.

Compatible accessories:
– EVA Barrier Tubing 5 mm x 8 mm
– EVA Barrier Tubing 4 mm x 8 mm
– Use with Duotight Locking Clips 8 mm / 5/16" for extra security