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02-20-2014, 10:47 AM
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Join Date: Feb 2009
Location: West Bend, WI
Posts: 74
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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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Gary K. Bacon
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...
Airworthiness & Repairman Certificate Issued
Phase 1, Completed  120 hours and counting!
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02-20-2014, 12:42 PM
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Join Date: Mar 2007
Location: 45G, Brighton, MI
Posts: 1,867
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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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Miles (VAF# 1238, Paid up as of 2018)
RV-7 TU 904KM (reserved)
Wings Fitted and Finish Kit on site
Construction Log
Picasa: Empennage Album, Wings Album, Fuselage Album
1955 Cessna 170B flying since 1982
'To get something you never had, you have to do something you never did.' -Unk.
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02-20-2014, 01:54 PM
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Join Date: Feb 2009
Location: West Bend, WI
Posts: 74
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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.
__________________
Gary K. Bacon
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...
Airworthiness & Repairman Certificate Issued
Phase 1, Completed  120 hours and counting!
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02-21-2014, 12:12 AM
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Join Date: Mar 2007
Location: 45G, Brighton, MI
Posts: 1,867
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Quote:
Originally Posted by TangoPapa
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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.
__________________
Miles (VAF# 1238, Paid up as of 2018)
RV-7 TU 904KM (reserved)
Wings Fitted and Finish Kit on site
Construction Log
Picasa: Empennage Album, Wings Album, Fuselage Album
1955 Cessna 170B flying since 1982
'To get something you never had, you have to do something you never did.' -Unk.
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02-21-2014, 10:07 AM
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Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,692
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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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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
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
Last edited by rzbill : 02-21-2014 at 04:33 PM.
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02-21-2014, 12:59 PM
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Join Date: Mar 2007
Location: 45G, Brighton, MI
Posts: 1,867
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Quote:
Originally Posted by rzbill
The OPs image is not a 1/2 NPT pipe (as proven by the 18 TPI dimension)
Therefore it is not an 822-8D...
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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.
__________________
Miles (VAF# 1238, Paid up as of 2018)
RV-7 TU 904KM (reserved)
Wings Fitted and Finish Kit on site
Construction Log
Picasa: Empennage Album, Wings Album, Fuselage Album
1955 Cessna 170B flying since 1982
'To get something you never had, you have to do something you never did.' -Unk.
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02-23-2014, 09:29 AM
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Join Date: Feb 2009
Location: West Bend, WI
Posts: 74
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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
__________________
Gary K. Bacon
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...
Airworthiness & Repairman Certificate Issued
Phase 1, Completed  120 hours and counting!
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02-24-2014, 05:16 PM
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Join Date: Feb 2009
Location: West Bend, WI
Posts: 74
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AN822-8
AN822-8 is the correct size!
__________________
Gary K. Bacon
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...
Airworthiness & Repairman Certificate Issued
Phase 1, Completed  120 hours and counting!
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