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  #1  
Old 04-26-2010, 08:42 AM
chepburn's Avatar
chepburn chepburn is offline
 
Join Date: Apr 2006
Location: Ottawa , Canada
Posts: 223
Question Where do I find a 3/8 pipe x 3/8 tube x 1/4 tube T fitting?

Hi all,
I have got an IO-360 A1B, and I am looking for a 3/8 pipe to 3/8 tube and 1/4 tube T fitting (Configured like an AN826-6D) or combination of fittings to achieve the same result. I want to take my fuel pressure off of the mechanical fuel pump outlet using a 1/4 " hose....so far I have only been able to locate AN fittings with 3/8" all the way around. Even a fitting with a male 3/8 pipe , and a male 3/8 tube and a female 3/8 pipe would work since I could then use a reducer.
I have poked around ACS and Vans with no luck....

(Of course, I am also open to suggestions on an alternate location for my pressure tap that won't require this T junction....)
Thanks for your help,

Chris

(BTW, after reading the IMC engine out thread, I dont want to use a short piece of 3/8 tube to 1/4 adapter solution.)
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  #2  
Old 04-26-2010, 11:10 AM
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rzbill rzbill is offline
 
Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,690
Default Pipe thread??

I am confused by the 3/8" pipe thread reference.

It is my understanding that Lycoming fuel pumps use a "straight thread/o-ring/washer/gland nut" fitting. Sorry, I don't have a generic spec handy without a literature dig.

A picture of fuel pump fittings is at the bottom of the following page on ACS website.

http://www.aircraftspruce.com/catalo...ycfuelpump.php

One of them has a 1/8 NPT female tap for adding your own separate fitting for fuel pressure.
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Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
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  #3  
Old 04-26-2010, 11:37 AM
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rocketbob rocketbob is offline
 
Join Date: Jun 2006
Location: 8I3
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Default

For oddball fittings like this I suggest you take some off-the shelf stainless fittings, cut them up and have someone TIG weld it together... every so often I do this sort of thing.
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  #4  
Old 04-26-2010, 12:01 PM
chepburn's Avatar
chepburn chepburn is offline
 
Join Date: Apr 2006
Location: Ottawa , Canada
Posts: 223
Default

Thanks Bill!!!


Couldn't find the forest for the trees!

Thats exactly what I am looking for. (BTW, also thanks for steering me in the correct thread type direction as well... I hadn't looked at the Lyc manual yet)

Chris

Quote:
Originally Posted by rzbill View Post
I am confused by the 3/8" pipe thread reference.

It is my understanding that Lycoming fuel pumps use a "straight thread/o-ring/washer/gland nut" fitting. Sorry, I don't have a generic spec handy without a literature dig.

A picture of fuel pump fittings is at the bottom of the following page on ACS website.

http://www.aircraftspruce.com/catalo...ycfuelpump.php

One of them has a 1/8 NPT female tap for adding your own separate fitting for fuel pressure.
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Chris Hepburn
Ottawa, ON
RV-8 C-GOGO FLYING
Renew 12/20
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