Duotight Push-In Fitting - 8 mm (5/16 in.) Check Valve

Name: Duotight Push-In Fitting - 8 mm (5/16 in.) Check Valve
Brand: Duotight
SKU: DUO110
Price: 4.99 USD
Availability: InStock

$4.99~~$0.00~~

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60 day no hassle return policy and 1 year warranty unless noted in the product

This Duotight check valve is a great idea for protecting your regulator. It has a low opening pressure of 1 psi. This check valve is suitable for clean liquids such as water or for gas. Since it cannot be disassembled for cleaning, we do not recommend it for beverage applications. The internal components are made from stainless steel. Compatible with EVABarrier 8 mm OD Tubing (D1717 & D1718).

Duotight offers superior quality when compared to other push-in fittings. Their double EPDM O-ring design provides a more complete and reliable seal, protecting against leaks even when tubing is bent around tight corners. They are suitable for both beverage and gas applications, and are pressure rated to 100 psi. Tubing can be released by simply pushing in the collet and pulling the line out. No need for clamps or cutting lines!

Features:

Insert tubing and firmly push to connect
Easily release tubing by pushing in the collet
Suitable for both gas & water applications
Made from food-grade acetal plastic
Double O-rings made from highly chemical resistant EPDM
Locking teeth made from stainless steel
Pressure rated to 150 psi
Temperature rated to 212°F (100°C)

Please note: exposure to chlorine will degrade the acetal plastic and stainless steel these fittings are made from. Do not use in contact with bleach or other chlorinated cleaning chemicals.

Kegland Part number: KL07047

As with all DuoTight Fittings, this check valve works perfectly.
Works great. Great for keeping beer out of the gas line
Keeping my gas line clean of liquid due to pressure equalizing.

5 stars: 7 (70%)
4 stars: 0 (0%)
3 stars: 3 (30%)
2 stars: 0 (0%)
1 star: 0 (0%)

faulty check valve?

I got these like others to prevent beer going back into the gas system when a keg is filled to the top. However this one failed in its duties. Or am I using it wrong?

Okay for water but not for CO2

I have one of these on my continuous carbonated water keg's input water line. That works fine with just a very faint hum when the water flows. Installed on my CO2 lines they made an embarrassing and annoying loud squeal with every pour. I removed them and replaced them with stainless check valves on each CO2 line - no more squeal. I have seen that Duotight makes a similar check valve specifically for gas lines that might work better for CO2 but I've only seen it for sale at one vendor in Canada so haven't tried it.

DuoTight Fittings

As with all DuoTight Fittings this check valve works perfectly.

I inserted these when I added a second keg to my kegerator. They are doing their job and prevent liquid from back flowing into my co2 regulator but the reason I gave only a 3 star rating is because I now have an annoying whistling sound when I pour. Still searching for a solution but I may have to switch to a double feed regulator.

Gets job done

Works great. Great for keeping beer out of the gas line

Duotight Push-In Fitting - 8 mm (5/16 in.) Check Valve

No problems so far. Seems to work.

Ch-ch-check your valve before you wreck your valve

Bought to go in-line on gas manifold

Love them. Keeping my gas line clean of liquid due to pressure equalizing.

No leaks easy to hook up lines

Not much to say...it's a good check valve :)

I'm using the mini regulators for each of my kegs. Where would I put the check valve? {CO2 Tank Reg} > {Mini Reg} > {Check Valve} > {Keg} {CO2 Tank Reg} > {Check Valve} > {Mini Reg} > {Keg}

MoreCoffee!

I’d go check valve right before the keg. This way you prevent any back flow from the keg (liquid) into your gas line.

MoreCoffee!

Correction to my previous answer. I initially didn't notice that this check valve is not rated for liquids like beer. That being the case the check valve needs to go between the CO2 tank regulator and the mini regulator.

MoreCoffee!

I would put it between the keg and the gas regulator to avoid beer to get into the regulator

MoreCoffee!

Always put a check valve between your liquid and your regulator. You never want to rebuild a regulator which has been flooded with beer.

Where do I connect it?

MoreCoffee!

I installed check valves in the CO2 lines between the kegs and the manifold of regulators.

MoreCoffee!

Between the ball lock and manifold or tank on the gas side. Make sure the arrow is going toward the keg so gas can flow to the keg.

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Duotight Push-In Fitting - 8 mm (5/16 in.) Check Valve