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Having trouble flaring fuel vent line

... yet people are more than willing to risk a faulty flare, used in a pressurized fuel system, within the cockpit.
I'm only flaring the fuel tank vent line here. I purchased my pressurized fuel lines from somebody who actually knows what they are doing :)
 
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I'm only flaring the fuel tank vent line here. I purchased my pressurized fuel lines from somebody who actually knows what they are doing (and for good reason) :)
the picture you posted above looks good. dimensions obviously are important and you're down to a few thousandths to finesse them in.

As you state, for a non-pressure, vent line...non-issue from here on in. Nice job!


S.
 
Final fuel vent line flaring update:
I flared the fuel tank vent lines today and test fit them. It ended up being easier than I expected using the Rolo-Flair tool. Both flares looked great.

Not sure what the consensus is here on VAF but I plan to use Del seals on the male AN vent line fittings rather than smear tank sealant all over them and have no easy access to the nut later.

Thanks to all of you for the great feedback!
 
Final fuel vent line flaring update:
I flared the fuel tank vent lines today and test fit them. It ended up being easier than I expected using the Rolo-Flair tool. Both flares looked great.

Not sure what the consensus is here on VAF but I plan to use Del seals on the male AN vent line fittings rather than smear tank sealant all over them and have no easy access to the nut later.

Thanks to all of you for the great feedback!
A properly flared tube should be assembled DRY, no sealant or Del seal is necessary.
 
I don't think there's any reason to use Pro Seal. I do place a dot of Torque stripe on things I like to keep an eye on, assuming you can shine a light and find it in a mirror....gives me that warm/fuzzy feeling.
Del-seals and Fuel Lube and all that won't fix a poorly made flange. I like the del seals for some applications though, same as I like Fuel Lube. Aluminum anodized AN fittings, are designed to be torqued, not over tightened. Where I've found leaks, on excessively tightened fittings, I generally always do the same thing...re-make a new tube, replace the flange side fittings, use a Del seal and re-torgque and keep an eye on things. seems to work pretty well for me.

I've never had some of the more sophisticated flaring mechanisms, but the Parker tool has worked well for decades for me....I think you could over-kill things if you like...but it's up to the builder.

I don't see the benefit of PRC on that fitting.


Steve
 
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