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  #1  
Old 02-20-2014, 10:47 AM
Gary's RV7A Gary's RV7A is offline
 
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Default AN822-6-6?

Having a hard time verifying if I ordered the correct steel fittings. Is the fitting below an AN822-6-6? Thanks, Gary



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  #2  
Old 02-20-2014, 12:42 PM
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longranger longranger is offline
 
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Default

I believe what you have there is an AN822-8D, (or an MS20822-6D) which is 1/2" tube to 3/8 pipe. Tube sizes are measured by OD, while pipe sizes are measured by ID.
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  #3  
Old 02-20-2014, 01:54 PM
Gary's RV7A Gary's RV7A is offline
 
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Default Nomenclature for fittings?

Well, if you're right then I ordered the wrong fitting. I can't find anything on the net that clearly states what it is. If I look at the chart on skygeeks, it says I need a MS20822-6-8, assuming the tube is the outside diameter and pipe thread is the inside diameter.
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  #4  
Old 02-20-2014, 03:01 PM
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TangoPapa TangoPapa is offline
 
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Default

What you have is aluminum. AN822-6-6D.
This might help.
http://www.aircraftspruce.com/catalog/hapages/an822.php
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  #5  
Old 02-21-2014, 12:12 AM
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Quote:
Originally Posted by TangoPapa View Post
What you have is aluminum. AN822-6-6D.
This might help.
http://www.aircraftspruce.com/catalog/hapages/an822.php
You are correct that the OP's photo is of an aluminum fitting, but he wants to replace it with steel. However, original poster 's photo shows the flare as 3/8 ID. Tubes are designated by OD. I use http://www.gen-aircraft-hardware.com...f/ftgnpt37.pdf as a reference. It refers to any 3/8 pipe to 1/2 flare a-8 size.
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  #6  
Old 02-21-2014, 10:07 AM
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Exclamation

The OPs image is not a 1/2 NPT pipe (as proven by the 18 TPI dimension)
Therefore it is not an 822-8D.

What remains is 3/8NPT x 3/8 Tube flare or 822-6-6D

EDIT: Never mind, I misread the table columns on a too small mobile screen. As stated below, both -8 and -6-6 have a 3/8 NPT. The dif is tube size.
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Last edited by rzbill : 02-21-2014 at 04:33 PM.
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  #7  
Old 02-21-2014, 12:59 PM
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longranger longranger is offline
 
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Quote:
Originally Posted by rzbill View Post
The OPs image is not a 1/2 NPT pipe (as proven by the 18 TPI dimension)
Therefore it is not an 822-8D...
Not necessarliy. Check the tables... both -8 and -6-6 pipe to flare adapter fittings have a 3/8 pipe size.

I may have been wrong about the tube end size, so Gary, you may have ordered the right fitting after all. Measure a fuel line fitting tube end I know they are 3/8.
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1955 Cessna 170B flying since 1982

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  #8  
Old 02-23-2014, 09:29 AM
Gary's RV7A Gary's RV7A is offline
 
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Default Tomorrow - Monday delivery

I'll find out tomorrow if I ordered the right fitting. I called spruce and they said to size it up to actual scaled picture in their catalog. I don't currently have a catalog but I did down load a PDF file which helped a lot. So I did change my order to an AN822-8 steel. I'll post tomorrow, right or wrong. Thanks for the help! Gary
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RV7A, IO-375, CS Prop, Dual P-Mags, Classic Aero Interior, Sam James Cowl & Wheel Pants, 3-G3X, GTN 650, GTR 200, Garmin Autopilot & GMC 305 Contol Panel, VP-X, and more...
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  #9  
Old 02-24-2014, 05:16 PM
Gary's RV7A Gary's RV7A is offline
 
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Default AN822-8

AN822-8 is the correct size!
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