Tube AN Nuts

[barno68]

I would like to use AN tubing nuts and sleeve on my hardlines rather than inverted flare to AN adapter, but I can not find the pressure rating on the manufacturer sites for the steel AN nuts. Here is the Earl nut: -6 Steel Tube Nut
561806ERL
Zinc Plated Domestic Steel Construction. Available for Any Plumbing Situation And Many Custom Applications.







Any ideas on this? Anyone using these on their fuel lines? Thanks.

[CarlC]

Steel AN nuts? I don't know off the top of my head but they are acceptable for use in power steering systems. That's 1500psi working pressure. I hope you're not running that much fuel pressure.

Most rubber hose is rated far higher than most fuel systems. Teflon hose can also be used and has a larger bore diameter on the fittings.

Aluminum nuts and ferules are fine for fuel as well.

[barno68]

I looked at the aluminum also, there is more of a selection, but I was concerned about corrosion between the metals. Then again, aluminum fuel fittings have been used for a long time...

I plan to use the socketless fittings and hose and the pressure should not be much over 50psi.

[edl406]

Im not sure on what your doing but I used these on my fuel system
http://store.summitracing.com/partde...5&autoview=sku
available in -6 and -8 AN on 3/8 and 1/2 inch aluminum tubing. the replacement brass compression rings can be bought at the hardware store if you screw up. The aluminum is awsome to work with and for the ends I just made up a couple of braided hose ends to attach it to the fuel cell and engine.
Im running 45-50psi fuel pressure and never a leak.

[67 455 Bird ragtop]

Im not sure on what your doing but I used these on my fuel system
http://store.summitracing.com/partde...5&autoview=sku
available in -6 and -8 AN on 3/8 and 1/2 inch aluminum tubing. the replacement brass compression rings can be bought at the hardware store if you screw up. The aluminum is awsome to work with and for the ends I just made up a couple of braided hose ends to attach it to the fuel cell and engine.
Im running 45-50psi fuel pressure and never a leak.

Thanks for this info. This is exactly the setup I was going to use for my fuel system. Nice to hear your success with it. And I'm not running intectors just a carb. So I know this will work for me.

[barno68]

I like those. I swung by the local Parker store and I think they will have everything I need at a much better price than Summit.