This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.

duotight - 8mm (5/16”) Female x 8mm (5/16”) Female One Way Check Valve (Gas)

$3.95 AUD
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This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.
  • This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.
  • This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.
  • This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.
  • This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.
  • This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.
  • This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.
  • This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.
  • This very handy fitting could save you your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1psi.
duotight - 8mm (5/16”) Female x 8mm (5/16”) Female One Way Check Valve (Gas)

duotight - 8mm (5/16”) Female x 8mm (5/16”) Female One Way Check Valve (Gas)

KL07047

$3.95 AUD
In stock
Volume pricing
1+ $3.95/ea
10+ $1.70/ea

This very handy fitting could save your regulator and is a worthwhile, long-term investment for any setup. By preventing backflow, it acts as a critical line of defence against liquid travelling backward into delicate gas equipment, protecting your regulator from potential contamination and expensive fluid damage.

This particular type of check valve is engineered with a very low opening cracking pressure of only 1 psi, ensuring fluid or gas flows freely with minimal resistance and system restriction. Highly versatile in application, this check valve is suitable for clean liquids such as water as well as a wide range of gases. Furthermore, the internal spring and essential components are crafted from high-grade stainless steel, providing outstanding durability, corrosion resistance, and reliable performance even under continuous operational use.

Applications & Compatibility

  • Gas line: Prevents any liquid from flowing back into your regulator
  • Liquid line: Prevents liquid backflow

8mm Tubing Compatibility

This 8mm duotight fitting is optimised for use with EVABarrier Dual Barrier Line. It is compatible with:

The duotight Generation 2 Difference

Why settle for standard push-in fittings? duotight Generation 2 represents a massive leap in engineering over traditional acetal fittings.

Dual-Material Double O-Ring Design

The secret to our superior seal is a two-stage system using two different high-quality materials:

  1. EPDM O-Ring: Provides exceptional chemical and gas resistance.
  2. Silicone O-Ring: Maintains its shape and elasticity in sub-zero temperatures.

High-Performance Materials (POK)

Instead of standard Acetal, Generation 2 fittings are made from Polyketone (POK).

  • Higher Chemical Resistance: Withstands harsh brewery cleaners.
  • UV Protection: Won't become brittle over time.
  • Extreme Durability: Rated for over 300psi @ 25°C.

User-Friendly Features

  • Color-Coded Collets: Black denotes 8mm (5/16").
  • Depth Indicators: Includes >| |< indicators so you know the hose is fully seated.
  • No Clamps Necessary: Simply push to seal; push the collet to release.

We recommend using a Tube Cutter to ensure a perfectly straight, burr-free cut. An angled cut is the #1 cause of leaks in push-fit systems.

Product Downloads

Generation 2 duotight Design Revision

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Overall rating: 4.917647 / 5 from 85 reviews.

AI Generated Review Summary

The duotight 8mm female x 8mm female one-way check valve is a reliable fitting suitable for clean liquids and gas. It features a low opening pressure, stainless steel components, and EPDM seals for high chemical and UV resistance. The double o-ring design ensures superior sealing and flexibility, making it a top choice for push-in fittings.

Summary topics

  • Ease of Use (18%): Many customers pointed out that the fitting is great, easy to use, and provides peace of mind.
  • Regulator Insurance (15%): A significant amount of customers expressed satisfaction with the insurance for the 'duotight' regulator.

Review topics: ["quality","value","fit","insurance","leaks","system","seal","valve","works","security","noises","disconnects","water","protection","crashing","joiner"].

Review highlights

  • "These are a great fitting and the double o-ring seal gives you peace of mind that it won't leak." — Wayne D.
  • "Cheap insurance to protect your regulator from liquid in your lines." — mark b.
  • "A very solid and reliable one-way check valve." — Matt C.

Reviews

Excellent duotight fittibg

"Great security in saving CO2 from escaping. Easy fit and great quality."

— David L. (5/5)

Soda water system

"I recently purchased a range of products from KegLand to build a custom sparkling water system for my home bar, including the 2L Ball Lock Keg, carbonation equipment, fittings, tubing and connectors. I’ve integrated everything into my Series X.1 kegerator, creating a system that delivers chilled, freshly carbonated sparkling water straight from the tap. The quality of the stainless steel components and fittings is excellent, and everything works together really well. The range of parts available from KegLand made it possible to build exactly the system I wanted rather than buying an expensive ready-made solution. It’s been a great little project, and I’m very pleased with the finished setup. Having cold sparkling water on tap whenever I want it is fantastic, especially in the Cairns heat! Great products, good value for money and an excellent range of equipment for anyone wanting to build their own home bar or carbonation system. Highly recommended, and I’ll definitely be purchasing from KegLand again!"

— John B. (5/5)

works good but makes a little noise

"fits perfectly, but sometimes makes a funny sound when letting gas through"

— Anthony T. (4/5)

Fit really well protects and

"Fit really well protects and for security no liquid flows back"

— Michael K. (5/5)

One Way Mate

"I have a couple of these for my CO2 bottles, they seem to work fine and protect my regulators worth well over a $100. Cheap insurance."

— Paul B. (5/5)

GREAT

"work well fits great"

— Daniel B. (5/5)

Duotight one way valve.

"Great fitting. I use this on my gas lines in the keganator while gasing the kegs. Great piece of gear"

— Anthony B. (5/5)

As above

"As above"

— Shane Y. (5/5)

AAA+ one way valve

"Works as advertised A+ one way valve"

— Brian M. (5/5)

Joiner

"Good"

— Drew D. (5/5)

Q&A