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Old 02-16-2011, 04:41 PM   #1
Jan 2008
Central MA
Posts: 281
Liked 12 Times on 12 Posts

This may seem like a silly question, but I want to hear what others do.

When connecting the ball lock QDs to the female flare swivel nuts on clamped onto the ends of gas and beer lines do you always use the little white nylon gaskets. Some of my QDs have all metal male flare ends and some have plastic tips on the male flare end made from the same plastic as the main body of the QD.

I assume it's appropriate to always use the little gaskets when the QD male flare end is metal to get a tight seal instead of metal to metal contact inside the flare. However, do you use or not use the gaskets when the male flare end is plastic.

I've had some very small annoying leaks from time to time that have cost me a tank or 2 of CO2. So I'm just trying to eliminate any possible leaks.
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Old 02-16-2011, 04:45 PM   #2
Registered User
Dec 2007
Posts: 9,043
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Originally Posted by starsailor View Post
However, do you use or not use the gaskets when the male flare end is plastic.
Don't use.


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Old 02-17-2011, 02:13 AM   #3
Nov 2010
Mahopac, NY
Posts: 2,221
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I posted this same question. Seems most do not use the washer when the disconnect has the plastic tip. I didn't use them and I have no leaks.

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Old 02-19-2011, 01:25 PM   #4
May 2009
Fishkill, New York
Posts: 103
Liked 1 Times on 1 Posts

Don't use them for Cornys. They are meant to be used when the flare nut is attached to a Sanke tap that doesn't have a gasket built in like our QDs do.
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