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

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 check valve is suitable for clean liquids such as water or for gas.  The spring and internal components are made with stainless steel and quality EPDM seals.

Looking for high quaility push in fittings that will seal tight?  duotight are the push in fitting with superior sealing capacity due to the double o-ring sealing design.

Generation 2 duotight
- Colour Coded Collets (6.35mm [1/4"] = Green ~ 8mm [5/16] = Black ~ 9.5mm [3/8] = Blue)
- Burst pressure is over 300psi @ 25°C
- Material Polyketone (POK) no longer Acetal (like John Guest Fittings)
- Higher Chemical & UV Resistance
- Excellent Gas Barrier Properties with EPDM + Silicone Seals
- Superior Performance in Cold Temperatures
- Easier to fit with Gauge depth indicators >|    |<

Compatible with our
KL42765 - Black Lightshield EVABarrier 4mm ID x 8mm OD x 12m Roll - Double Wall EVA
Not compatible with 6mm ID x 10mm OD line

Looking for high quality push in fittings that will seal tight?  duotight are the push in fitting with superior sealing capacity due to the double o-ring sealing design.

Why do we use Double O-rings?
The secret to our superior sealing performance is not just the fact that we use high quality EPDM and a Silicone O-Ring.

Why two different materials?
EPDM has a high gas and chemical resistance, but when chilled it can shrink slightly. Silicone O-Rings are also very chemical resistant but perform far better under sub-zero conditions not losing their shape.
By having the best of both worlds we're making sure there is twice as much sealing surface compared to other push in fittings on the market with just one.
This makes our fittings even more reliable across a multitude of applications and reduces the chance of a leak significantly.

The double o-ring system also means that we can bend the hose with much tighter radius without causing leaking issues.  This typically can be an issue with other fittings.  This combination of factors makes duotight fittings the most reliable push fit fittings on the market.

No clamps necessary! 
We do recommend cutting your hosing straight, not on an angle, to ensure the line has a complete seal. To remove the fitting simply push in the collet and the hose can be removed. 

Shipping prices are calculated on the checkout page based on the size, weight, and where it needs to be delivered. You can be confident that you will receive accurate and fair shipping rates specifically tailored to suit your individual purchase. 

Once an order is placed, please note that KegLand is unable to make changes or additions to the order or modify the shipping information. If any changes are required, it is the customer's responsibility to directly contact the shipping provider and arrange for redirection or any necessary adjustments. 

Read More: Shipping Policy