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Old 02-14-2012, 04:24 PM
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Uncle Ben Uncle Ben is offline
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Originally Posted by subzali View Post
Interesting though, if I go for a tank (from Kilby anyway), they have a MAWP of 150 psi. So the 185 psi relief valve is no bueno.

I have thought about how to tap the head for alternate threads. Haven't been able to figure out a good solution yet.

I still think I have the 45 degree flare (SAE) on this compressor. The -AN fittings are 37 degree flare. I don't know how to tell exactly what I have, some research I've done says that OEM applications didn't come with -AN, only SAE. You can go from SAE to NPT and back to -AN, but not directly from SAE to -AN. Most of the stuff you can buy from Jegs, Summit, etc. are -AN. Which makes me wonder why did Jegs, Summit, etc. settle on -AN if indeed OEM applications didn't use -AN? It doesn't make any sense.

Another thing, is that both SAE and -AN are tubing based, whereas NPT is obviously pipe based. And all this stuff is limited to about 5/8" or 3/4" sizes on the large end, you don't really see anything larger than that. So the options are somewhat limited depending on what you're trying to do.


I'll just throw something together and if it leaks I'll know I made the wrong choice and I'll have to go back and fix it

In all reality, I think I do have a plan though

-AN is an after market industry standard size. Most likely because there are no half sizes. -AN is all increments of 1/16" (-4AN = 4/16 or 1/4") You can adapt to both NPT and MPT.
Here is a pic of my ND compressor in WR. The hoses and fittings here are -6AN with the pipe thread being 1/4 NPT. AN fittings range from 2 to 16. Adapters can be had even for 1 1/2" radiator hose
to -16AN fittings.
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Last edited by Uncle Ben; 02-14-2012 at 05:08 PM.
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