8mm (5/16) duotight x 4 Way Manifold with Check Valves & Isolation Valves

8mm (5/16") duotight x 4 Way Manifold

The duotight 8mm (5/16") 4‑Way Manifold gives you clean, modular gas distribution with check valves and isolation valves on every outlet. Each check valve can be removed when you want gas or filtered water to move freely in all directions, making this manifold adaptable to any kegerator, keezer, or multi‑keg setup.

Removing a valve is simple — use a thin flat‑head screwdriver to slide the black retainer tabs and pop the ball valve out. The manifold includes built‑in mounting points for button‑head screws, and for kegerator installs we recommend pairing it with duotight 8mm adhesive brackets for a clean, drill‑free installation.

Built with Generation 2 duotight technology, this manifold delivers superior sealing performance thanks to its double O‑ring system, colour‑coded collets, and high‑strength Polyketone (POK) construction. With excellent chemical resistance, UV stability, and cold‑temperature performance, duotight fittings offer unmatched reliability across brewing and gas‑distribution systems.

The double O‑ring design also allows tighter hose bends without leaks — a common failure point in other push‑fit fittings. No clamps are required; simply cut your EVABarrier line straight, push it in, and enjoy a secure, gas‑tight seal.

(Not suitable for liquids other than filtered water.)

Generation 2 duotight Advantages

• Colour‑coded collets
• 6.35mm = Green
• 8mm = Black
• 9.5mm = Blue
• Burst pressure over 300psi @ 25°C
• Polyketone (POK) body — stronger and more durable than Acetal
• High chemical & UV resistance
• Excellent gas barrier properties
• EPDM + Silicone double O‑ring sealing
• Superior performance in cold environments
• Gauge depth indicators for easy installation

Why Double O‑Rings?

• EPDM provides excellent gas and chemical resistance
• Silicone maintains shape and sealing performance in sub‑zero conditions
• Combined, they create twice the sealing surface of standard push‑fit fittings
• Allows tighter hose bends without leaks
• Reduces the chance of gas loss significantly

Key Features

• 4‑way 8mm duotight manifold with removable check valves
• Isolation valves on every outlet for full control
• Built‑in mounting points; adhesive brackets optional
• Double O‑ring sealing for leak‑free performance
• Polyketone construction for strength and durability
• Ideal for multi‑keg kegerators and keezer builds
• No clamps required — simple push‑fit installation