when fitting the fuel tank fittings??

miyu1975 · #1 07-01-2009, 05:27 PM

Am I suppose to use plumbers tape when screwing the "say" flop tube end to the blue fitting? If so, is it regular plumbers tape or special kind?..I am about to safety wire the fitting and wanted to make sure before proceeding..thx all

alpinelakespilot2000 · #2 07-01-2009, 05:35 PM

Quote:

Originally Posted by miyu1975

Am I suppose to use plumbers tape when screwing the "say" flop tube end to the blue fitting? If so, is it regular plumbers tape or special kind?..I am about to safety wire the fitting and wanted to make sure before proceeding..thx all

Teflon TAPE should NOT get any where near your airplane. Little pieces can break off and clog up your various filters. Fuel lube (EZ Turn) can be used on most all NPT fuel fittings. However, your flared fittings do not require any lube/sealants at all. Standard practice is to connect them dry. Teflon paste is also commonly used on NPT engine fuel fittings if fuel lube is not used there. Hope this helps.

miyu1975 · #3 07-01-2009, 05:49 PM

yes..thx. How about putting some proseal on the threads, making sure not to get any in the inner flop tube hole.?

mannanj · #4 07-01-2009, 07:26 PM

Quote:

Originally Posted by miyu1975

yes..thx. How about putting some proseal on the threads, making sure not to get any in the inner flop tube hole.?

Fuel Lube/EZ Turn is all you need. Pro Seal is like sending an 800lb Gorrilla to peel a bannana.

miyu1975 · #5 07-02-2009, 09:42 AM

ok but...I have proseal..I don't have ez lube or the other stuff. The 800# Gorilla still can eat the banana right?

miyu1975 · #6 07-02-2009, 09:43 AM

also..how tight are the tank fittings to be...how much torqued..didn't see it listed anywhere?

alpinelakespilot2000 · #7 07-02-2009, 09:57 AM

Quote:

Originally Posted by miyu1975

ok but...I have proseal..I don't have ez lube or the other stuff. The 800# Gorilla still can eat the banana right?

1. You're going to need it at some point in the build, so why not buy it now? It only costs a few bucks for a tube that will be more than enough for the entire build.

2. What exactly do you think you need the proseal or thread sealant for? The fuel tank fittings are all flared, correct? Flared fittings do not require any sealant or paste at all. They are generally assembled dry.

Regarding the torque--there are torque values in the Standard Aircraft Handbook. Alternatively, Van's also has a pdf on their website that suggests using the "tighten until finger tight and then one or two flats additional with a wrench" method. I'm paraphrasing the latter, so don't quote me, but it is a widely accepted practice that does not require getting a torque wrench on the fitting. Again, I'm pretty sure they have it on their website somewhere. Maybe someone else can provide the link to it. It's been posted here on VAF sometime in the past.

frankh · #8 07-02-2009, 10:01 AM

will be needed if you ever have to seperate a fitting put together with Proseal..

..Either that or a welding torch!

I just used teflon paste..never used fuel lube anywhere on the airplane..works great, just never needed it.

Frank

beechrv9a · #9 07-02-2009, 10:48 AM

Click on or Paste in your browserhttp://www.vansaircraft.com/pdf/Torq...m_Fittings.pdf

miyu1975 · #10 07-02-2009, 10:51 AM

2. What exactly do you think you need the proseal or thread sealant for? The fuel tank fittings are all flared, correct? Flared fittings do not require any sealant or paste at all. They are generally assembled dry.

Yes...but I am speaking of the L shaped blue fitting that screws into the flop tube...see pic from brad site.
http://www.rv7factory.com/log/060803.html