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Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Mon Feb 14, 2011 6:51 am Post subject: Gascolator

As low as it can go, and the sump drain is poised just above the  

bottom fabric. I reinforced the fabric with a plastic floor flange of  

the appropriate size. My fuel line (3/8" automotive 30R7) runs under  

the seat, and forward through the middle of the plane.



Lynn Matteson

Kitfox IV Speedster, taildragger

Jabiru 2200, #2062

Sensenich 62"x 55.5 Wood

Prince prop (64 x 30, P-tip) is here, but not installed yet

Electroair direct-fire ignition system

Rotec TBI-40 injection (sleeved to 35mm)

Status: flying...1081 hrs (since 3-27-2006)

On Feb 14, 2011, at 7:19 AM, WurlyBird wrote:



 	  Quote: 	
		   

 <james.t.trizzino(at)us.army.mil>



 Noel, I have that same header tank on my III and am not a huge fan  

 of it either.  I have mentioned in earlier posts that I am going to  

 re-do the fuel system in my Fox once I get home and that is one of  

 the things I am going to change.  I am just now remembering that I  

 did not put that on the list of things that I JUST ordered from the  

 McBeans, I wonder if I can get to them before they ship.



 To those that have the header behind the seat and use this as the  

 lowest point in the system; How low do you have it on the seat?   

 For those of you that use this tank as the "gascolator", how do you  

 get your sample, do you have it close to the floor so you can get a  

 fuel sample from under the aircraft or do you have to reach behind  

 the seat and risk a spill in the tail?  Do you then run the fuel  

 lines under the doors?  I think this may be how I would like to set  

 mine up.  Sump through the bottom fabric and fuel under the door, I  

 already have a gascolator on the firewall so I may just leave that  

 one.  Ponder, ponder, ponder.



 --------

 James

 Kitfox 3 / 582 / 70&quot; IVO 2 blade GA

 50 hrs on the Fox in between deployments,

       now she lies in wait





 Re

_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Mon Feb 14, 2011 7:36 am Post subject: Gascolator

I had a closer look at my header tank the other day and the outlet is on the

bottom of the tank.  However the bottom of the tank is flat so a little

moisture could lurk in it... not enough to flood my gascolator though.  The

beauty of my system is the regardless of whether my plane is sitting on

three wheels, tail low or up on its floats my gascolator is always the

physical lowest part of my fuel system.



I was thinking about all the guys who told me they like being able to see

the fuel run through their clear cartridges in the cabin.  Well a drip loop

of clear tube will do the same thing....  better than that a glass

gascolator in the lines from the wing tanks to the header will be even

better because it would give you the option of another clean out if you do

happen to see any gunk coming down the line.  A gascolator also doesn't have

a any paper which can expand with water and block fuel flow.  It is true

that if you are using ethanol contaminated fuel your paper filters should

never get water wet except in the case of a phase separation which will stop

any engine...  filters or not.



I really don't want to get started on the evils of ethanol again.  Suffice

it to say I'd like to see everyone lay it on the powers to be whether or not

they want to fly, drive or boat on that fuel.  Remember it's the squeaky

wheel that gets the grease.



I've flown in and worked on several kinds of Cessna, Piper, Lake, De

Havilland and homebuilt aircraft and none of them ever had a paper filter

near the fuel system.  I don't think I would feel nearly so confident in my

plane with a filter that could quickly block the flow of fuel.  The

gascolator however will screen anything that could affect the engine without

the same blockage issues.



Noel



--

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Mon Feb 14, 2011 9:49 am Post subject: Gascolator

On 2/14/2011 4:19 AM, WurlyBird wrote:

 	  Quote: 	
		   To those that have the header behind the seat and use this as the lowest point in the system; How low do you have it on the seat?

The bottom of the plastic tank is 2" above the fabric. My header tank is 
	


behind the passenger seat bulkhead, not in front as Kitfox designed it, 

and as close to the right side of the fuselage as the level fitting will 

allow. (My fuel level indicator is in the side.) Having it behind made 

it easier to run lines.

 	  Quote: 	
		   For those of you that use this tank as the "gascolator", how do you get your sample, do you have it close to the floor so you can get a fuel sample from under the aircraft or do you have to reach behind the seat and risk a spill in the tail?

The quick-drain pierces the fabric just as it does in the wing tanks. I 
	


have a 2" aluminum tube extension from the tank to the drain.

 	  Quote: 	
		   Do you then run the fuel lines under the doors?

Single 3/8" aluminum fuel line runs around the passenger seat to the 
	


right and then back to centerline. Don't know why I did it that way, 

except to make it easy to mount and service the mondo automotive fuel 

filter I use. It was also pretty crowded around the flap and elevator 

control rods and bungees. (Yes, I still use bungees.) If you don't use 

bungees I'd run the fuel right up the middle.



Guy Buchanan

Ramona, CA

Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded

_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

ronlee

Joined: 25 Dec 2006
Posts: 141

Posted: Tue Feb 15, 2011 10:14 am Post subject: Re: Gascolator

My experience with outboard boat engines has proved that a leak before the fuel pump will cause an engine stoppage in short order. If you are pulling fuel from a tank on the bottom of a boat a very small leak in the line will suck in air and the engine will starve for fuel. Believe me the leak does not have to be very big either. Anything that will cause a slight vacuum on the suction side of your fuel pump is a prescription for engine stoppage should any leak develop. I agree we fly experimental and can do anything we wish. Some techniques though are better followed that have a proven track record.....

_________________
Ron Lee
Tucson, Arizona

Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Tue Feb 15, 2011 1:25 pm Post subject: Re: Gascolator

Ronlee

I agree with you.  All car manufacturers, as far as I know, have moved the fuel pump to the gas tank now.  I believe it is because it is better to push fuel than it is to suck it.  Remember when the fuel pump was driven by an engine mounted mechanical pump? 



There was an excellent topic on this in the Matronics Zenith list several years ago.  One of the things mentioned to prove this was, take two straws, place one in a glass of water and the other outside the glass.  Put both straws in your mouth and suck....  Guess which one has the least amount of friction?  So, it seems that pushing, instead of sucking, is the best method for moving fuel through a line.  I don't have the exact quote on this example, but I could probably find it if anyone is interested.

_________________
Tommy Walker
N25A - Anniston, AL

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Tue Feb 15, 2011 3:39 pm Post subject: Gascolator

Having the pump in the tank to push the fuel is a great idea but there is

another reason.  The gas is also a great cooling device for the pump.  That

means the pumps last longer and works more efficiently.



Noel



--

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Tue Feb 15, 2011 3:39 pm Post subject: Gascolator

I forgot to say that some of those pumps attain 60 psi pressure on the line

to feed EFI systems and they have no filters between them and the gas...

only a screen to keep the lumps out.  As an added feature the pumps usually

are integrated with the tank float for the fuel gauge.  I've yet to hear of

a tank exploding because of the pump.



Noel



--

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

WurlyBird

Joined: 16 May 2008
Posts: 207
Location: North Pole, Alaska

Posted: Sun Mar 20, 2011 6:17 pm Post subject: Re: Gascolator

I have been working on the new header tank, among other things, and I have a couple more questions about it.  



First it seems that all components used for my fuel system is 1/4" so I am going to replace the two in barbs with 1/4".  Is there something wrong with this?  Hope not.  



I am also looking at the blue elbow which leads to the engine from the header.  I am familiar with compression fittings but I can not figure this one out.  What size tubing goes into this nipple?  None of the tubing I have seems to fit and it is 1/4" aluminum.  Also, I can not for the life of me find the 'nut' needed to complete the compression fitting.  I have searched on Aircraft Spruce for over an hour and gone through the builders manual and can not find the name of this part. 



 Someone please help.

_________________
James
Kitfox 3 / 582 / 70" IVO 2 blade GA
50 hrs on the 582 swapping for HKS 700E and Avid Cowl.

Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Sun Mar 20, 2011 8:20 pm Post subject: Gascolator

On 3/20/2011 7:17 PM, WurlyBird wrote:

 	  Quote: 	
		   First it seems that all components used for my fuel system is 1/4" so I am going to replace the two in barbs with 1/4".  Is there something wrong with this?  Hope not.

I used 3/8 for my feed lines to minimize losses.
	


 	  Quote: 	
		   I am also looking at the blue elbow which leads to the engine from the header.  I am familiar with compression fittings but I can not figure this one out.  What size tubing goes into this nipple?  None of the tubing I have seems to fit and it is 1/4" aluminum.  Also, I can not for the life of me find the 'nut' needed to complete the compression fitting.  I have searched on Aircraft Spruce for over an hour and gone through the builders manual and can not find the name of this part.

    

I hope someone else can figure out what you're asking, because without 
	


pictures I can't. If nobody else replies shoot some pictures or 

reference some manual pages / pictures and I'll try to help.



Guy Buchanan

Ramona, CA

Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded

_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

lcfitt(at)sbcglobal.net
Guest

Posted: Sun Mar 20, 2011 8:48 pm Post subject: Gascolator

James,



If you are looking at the typical factory fitting, it is for 5/16 tubing and 

the parts you are looking for are as follows:



AN818-5D "Nut"



An819-5D "Sleeve



You will need one of each for each connection.  don't forget that you will 

need them at the fuel valve as well as the termination of the aluminum line 

at the firewall.  My system includes the compression fitting at the header 

tank, two at the fuel pump, two at the fuel valve and one that runs to a 

hose barb just forward of the firewall.  I just finished my new project 

system and am well aware of the frustration finding parts - lots of bushings 

to change pipe thread diameters etc.  Also keep in mind that aircraft 

compression fittings use a different angle of the flair than the typical 

hardware type - as I understand it, the typical AN fitting we use has a 45° 

flair and the hardware store fitting flair is 37°.



If your fitting happens to be for 1/4" tubing, then the suffix would be 4D 

on both.  On the Model IVs the wing tank to header tank tubing was typically 

5/16", however I know of guys that have changed to 1/4" throughout the 

system and have flown hard with no fuel flow issues.  If you are running the 

582, you might think about 5/16 as the fuel consumption is a bit higher than 

the 912.



Lowell



--------------------------------------------------

From: "WurlyBird" <james.t.trizzino(at)us.army.mil>

Sent: Sunday, March 20, 2011 7:17 PM

To: <kitfox-list(at)matronics.com>

Subject: Re: Gascolator



 	  Quote: 	
		   

 <james.t.trizzino(at)us.army.mil>



 I have been working on the new header tank, among other things, and I have 

 a couple more questions about it.



 First it seems that all components used for my fuel system is 1/4" so I am 

 going to replace the two in barbs with 1/4".  Is there something wrong 

 with this?  Hope not.



 I am also looking at the blue elbow which leads to the engine from the 

 header.  I am familiar with compression fittings but I can not figure this 

 one out.  What size tubing goes into this nipple?  None of the tubing I 

 have seems to fit and it is 1/4" aluminum.  Also, I can not for the life 

 of me find the 'nut' needed to complete the compression fitting.  I have 

 searched on Aircraft Spruce for over an hour and gone through the builders 

 manual and can not find the name of this part.



 Someone please help.



 --------

 James

 Kitfox 3 / 582 / 70&quot; IVO 2 blade GA

 50 hrs on the Fox in between deployments,

      now she lies in wait





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=334557#334557

WurlyBird

Joined: 16 May 2008
Posts: 207
Location: North Pole, Alaska

Posted: Mon Mar 21, 2011 3:03 am Post subject: Re: Gascolator

Unfortunately the builders manual for the 3 does not go into great detail with the fuel system, which is probably why the guy that built mine had it so oddly set up.  I am running a 582 and the current fuel set up runs strictly 1/4" and I have had no issues.  It is not until I got this header tank that it was brought to my attention that this wasn't normal.  The way my fuel system is now it is 1/4" aluminum tubing under the seat and into the fire wall, but any where there needs to be flex or a fitting there is a section of rubber fuel tubing.  Hopefully I can get this sorted out with out too much trouble.  thanks for the help, and here is a picture of the fitting I am talking about.

P3210109.JPG

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_________________
James
Kitfox 3 / 582 / 70" IVO 2 blade GA
50 hrs on the 582 swapping for HKS 700E and Avid Cowl.

helili(at)chahtatushka.ne
Guest

Posted: Mon Mar 21, 2011 3:53 am Post subject: Gascolator

I think this is probably what he's talking about:

http://www.aircraftspruce.com/menus/ha/an.html 



John Hart

KF IV

Wilburton, OK 



--

Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Mon Mar 21, 2011 4:44 am Post subject: Gascolator

Aviation fittings are 37°, and hardware store stuff is 45°, Lowell.



Lynn Matteson

Kitfox IV Speedster, taildragger

Jabiru 2200, #2062

Prince prop (64 x 30, P-tip)

Electroair direct-fire ignition system

Rotec TBI-40 injection (sleeved to 35mm)

Status: flying...1089 hrs (since 3-27-2006)

Temp. grounded...building new intake manifold.

On Mar 21, 2011, at 12:45 AM, Lowell Fitt wrote:



 	  Quote: 	
		   

 <lcfitt(at)sbcglobal.net>



 James,



    (snip)
	




 	  Quote: 	
		    - as I understand it, the typical AN fitting we use has a 45°  

 flair and the hardware store fitting flair is 37°.



   (snip)
	




 	  Quote: 	
		   Lowell

_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

Pat Reilly

Joined: 06 Aug 2009
Posts: 345

Posted: Mon Mar 21, 2011 7:22 am Post subject: Gascolator

Wurleybird, I have a mod 3 582 with 1/4" plastic lines to plastic header tank behind seat and aluminum line from header to valve under the panel, and hose connecting aluminum tube to valve and from valve through firewall. The only problem I encountered was getting fittings in that plastic header to seal up. I tried everything with no success until someone on this site recommended Dow 730 sold by Aircraft Spruce. It sealed up on 1st try with no sign of a leak. The only draw back and reason why I tried everything else 1st is the damn stuff is $100 for a 3 oz tube. I used about $2 worth on the fittings and still have the tube in the refrigerator a year latter. Wife hasn't complained about that use of the refrigerator once. She was much more upset the day she called me after she found a skunk in the freezer compartment that I was intending to skin out for a hat for the grandkids. Since I do all the cooking why would she be in the freezer anyway? She asked, "Is there a dead animal in our freezer?" I replied, "Sure there are alot of dead animals, pigs, cows, chickens and fish too. Why do you ask?" "No, I mean with black hair still on it". The conversation went downhill from there. But, alls well that ends well. We are still married. Although come to think of it she is my 2nd wife. Had to divorce the 1st one. It was all her fault. She absolutely refused to get along with my girl friend.

   

 Pat Reilly

 Mod 3 582 Rebuilt

 Rockford, IL 

 On Mon, Mar 21, 2011 at 6:03 AM, WurlyBird <james.t.trizzino(at)us.army.mil (james.t.trizzino(at)us.army.mil)> wrote:

  	  Quote: 	
		  --> Kitfox-List message posted by: "WurlyBird" <james.t.trizzino(at)us.army.mil (james.t.trizzino(at)us.army.mil)>

 

Unfortunately the builders manual for the 3 does not go into great detail with the fuel system, which is probably why the guy that built mine had it so oddly set up.  I am running a 582 and the current fuel set up runs strictly 1/4" and I have had no issues.  It is not until I got this header tank that it was brought to my attention that this wasn't normal.  The way my fuel system is now it is 1/4" aluminum tubing under the seat and into the fire wall, but any where there needs to be flex or a fitting there is a section of rubber fuel tubing.  Hopefully I can get this sorted out with out too much trouble.  thanks for the help, and here is a picture of the fitting I am talking about.

 

--------

James

Kitfox 3 / 582 / 70&quot; IVO 2 blade GA

50 hrs on the Fox in between deployments,

     now she lies in wait





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=334568#334568

 



Attachments:



http://forums.matronics.com//fil

 y Browse, Chat, FAQ,

 ="http://www.matronics.com/Navigator?Kitfox-List" target="_blank">http:=====

  http://forums.mle, List Admin.

 =====



	




 

-- 

Pat Reilly

Mod 3 582 Rebuild

Rockford,IL

  [quote][b]

lcfitt(at)sbcglobal.net
Guest

Posted: Mon Mar 21, 2011 7:34 am Post subject: Gascolator

Lynn,



I stand corrected.  The point I was trying to make is that the Ace Hardware 

flairing tool, is not the one to use for AN Fittings.



My bad.



Lowell



--------------------------------------------------

From: "Lynn Matteson" <lynnmatt(at)jps.net>

Sent: Monday, March 21, 2011 5:42 AM

To: <kitfox-list(at)matronics.com>

Subject: Re: Re: Gascolator



 	  Quote: 	
		   



 Aviation fittings are 37°, and hardware store stuff is 45°, Lowell.



 Lynn Matteson

 Kitfox IV Speedster, taildragger

 Jabiru 2200, #2062

 Prince prop (64 x 30, P-tip)

 Electroair direct-fire ignition system

 Rotec TBI-40 injection (sleeved to 35mm)

 Status: flying...1089 hrs (since 3-27-2006)

 Temp. grounded...building new intake manifold.

 On Mar 21, 2011, at 12:45 AM, Lowell Fitt wrote:



> 

>

> James,

>

    (snip)



>  - as I understand it, the typical AN fitting we use has a 45°  flair and 

> the hardware store fitting flair is 37°.

>

   (snip)



> Lowell

Pat Reilly

Joined: 06 Aug 2009
Posts: 345

Posted: Mon Mar 21, 2011 7:36 am Post subject: Gascolator

Wurlybird, I saw that fitting in your other post. I believe it was a flare fitting. I don't kow what size aluminum tubing you need. And, off the top of my head, I don't know what size mine uses. I have a similar fitting out of my header tank with aluminum tubing.  1/4" rubber fuel hose is a very tight fit over the aluminum tubing. Guess that would be 1/4" aluminum tubing.

   

 Pat Reilly

 Mod 3 582 Rebuilt

 Rockford, IL

 On Sun, Mar 20, 2011 at 9:17 PM, WurlyBird <james.t.trizzino(at)us.army.mil (james.t.trizzino(at)us.army.mil)> wrote:

  	  Quote: 	
		  --> Kitfox-List message posted by: "WurlyBird" <james.t.trizzino(at)us.army.mil (james.t.trizzino(at)us.army.mil)>

 

I have been working on the new header tank, among other things, and I have a couple more questions about it.



First it seems that all components used for my fuel system is 1/4" so I am going to replace the two in barbs with 1/4".  Is there something wrong with this?  Hope not.

 

I am also looking at the blue elbow which leads to the engine from the header.  I am familiar with compression fittings but I can not figure this one out.  What size tubing goes into this nipple?  None of the tubing I have seems to fit and it is 1/4" aluminum.  Also, I can not for the life of me find the 'nut' needed to complete the compression fitting.  I have searched on Aircraft Spruce for over an hour and gone through the builders manual and can not find the name of this part.

 

 Someone please help.



--------

James

Kitfox 3 / 582 / 70&quot; IVO 2 blade GA

50 hrs on the Fox in between deployments,

     now she lies in wait





Read this topic online here:

 

http://forums.matronics.com/viewtopic.php?p=334557#334========================

 y Browse, Chat, FAQ,

 ="http://www.matronics.com/Navigator?Kitfox-List" target="_blank">http:=====

  http://forums.mle, List Admin.

 =====



	




 

-- 

Pat Reilly

Mod 3 582 Rebuild

Rockford,IL

  [quote][b]

Pat Reilly

Joined: 06 Aug 2009
Posts: 345

Posted: Mon Mar 21, 2011 7:36 am Post subject: Gascolator

Wurleybird, Those AN flare fittings are available from most streetrod or race car parts suppliers also, Summit Racing, Jegs, etc.

  

 Pat reilly

 Mod 3 582 Rebuilt

 Rockford, IL

 On Mon, Mar 21, 2011 at 6:50 AM, John W. Hart <helili(at)chahtatushka.net (helili(at)chahtatushka.net)> wrote:

 [quote]--> Kitfox-List message posted by: "John W. Hart" <helili(at)chahtatushka.net (helili(at)chahtatushka.net)>

 

I think this is probably what he's talking about:

http://www.aircraftspruce.com/menus/ha/an.html



John Hart

KF IV

Wilburton, OK

 

--

Tom Jones

Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA

Posted: Mon Mar 21, 2011 7:58 am Post subject: Re: Gascolator

I sense a little confusion on the aluminum fuel line size.  Hard line tubing is measured as Outside Diameter (OD).  I suspect the aluminum tubing here is 5/16" OD so fittings would be sized as such.  The early kitfox kits I am familiar with came with 5/16 OD aluminum tubing fuel line.



James, if you change any fittings be sure to check their inside diameter.  Some have a tiny...about 1/8"...ID, especially 1/4 inch fittings.



The only way to be sure if fuel flow is sufficient is to do a flow rate test at the fuel pump level.  Do two.  One in level attitude and one with nose high.

_________________
Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA

Last edited by Tom Jones on Mon Mar 21, 2011 8:41 am; edited 1 time in total

Pat Reilly

Joined: 06 Aug 2009
Posts: 345

Posted: Mon Mar 21, 2011 8:35 am Post subject: Gascolator

Tom, Thanks for the clarification. I can force 1/4" rubber fuel line on the aluminum tubing from the header. It is definitely a "force fit" though, 5/16" OD tubing would make sense.

  

 Pat Reilly

 Mod 3 582 Rebuilt

 Rockford, IL

 



 

 On Mon, Mar 21, 2011 at 10:58 AM, Tom Jones <nahsikhs(at)elltel.net (nahsikhs(at)elltel.net)> wrote:

  	  Quote: 	
		  --> Kitfox-List message posted by: "Tom Jones" <nahsikhs(at)elltel.net (nahsikhs(at)elltel.net)>

 

I sence a little confusion on the aluminum fuel line size.  Hard line is measured as Outside Diameter (OD).  I suspect the aluminum tubing here is 5/16" OD so fittings would be sized as such.  The early kitfox kits I am familiar with came with 5/16 OD aluminum fuel line.

 

James, if you change any fittings be sure to check their inside diameter.  Some have a tiny...about 1/8"...ID, especially 1/4 inch fittings.



The only way to be sure if fuel flow is sufficient is to do a flow rate test at the fuel pump level.  Do two.  One in level attitude and one with nose high.

 

--------

Tom Jones

Classic IV

503 Rotax, 72 inch Two blade Warp

Ellensburg, WA





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=334612#334612

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-- 

Pat Reilly

Mod 3 582 Rebuild

Rockford,IL

  [quote][b]

Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Mon Mar 21, 2011 10:40 am Post subject: Gascolator

On 3/21/2011 4:03 AM, WurlyBird wrote:  	  Quote: 	
		      	  Quote: 	
		  Hopefully I can get this sorted out with out too much trouble.  thanks for the help, and here is a picture of the fitting I am talking about.

  	
 	
 What's interesting is that your previous post talked about "compression" fittings. Please don't be offended if I'm way off the mark; at the risk of insulting you I'll tell you that what you photographed is a flare fitting. A compression fitting uses a sleeve over the tube that gets "compressed" onto the tube by a nut and female receptacle compressing the wedges surfaces of the sleeve. In a flare fitting the end of the tube is flared after a nut and sleeve are put on and the flare simply rests against the cone you see on your "nipple". You'll need an aircraft flare fitting to match the AN hardware, as Lynn and Lowell said, as plumbing hardware is different. Google "flare fitting" and "compression fitting" and you'll see pictures showing the difference. Hope that helps.

 

           Guy Buchanan   Normal   Guy Buchanan   8   20   2010-09-24T17:53:00Z   2011-01-02T22:52:00Z   1   25   149   1   1   173   14.00          <![endif]-->         59   Clean   Clean   false            false   false   false      EN-US   X-NONE   X-NONE                                             MicrosoftInternetExplorer4                                                   <![endif]-->                                                                                                                                                                                                                                                                                                                                                                                                                                <![endif]-->      /* Style Definitions */  table.MsoNormalTable 	{mso-style-name:"Table Normal"; 	mso-tstyle-rowband-size:0; 	mso-tstyle-colband-size:0; 	mso-style-noshow:yes; 	mso-style-priority:99; 	mso-style-parent:""; 	mso-padding-alt:0in 5.4pt 0in 5.4pt; 	mso-para-margin:0in; 	mso-para-margin-bottom:.0001pt; 	mso-pagination:widow-orphan; 	font-size:10.0pt; 	font-family:"Calibri","sans-serif"; 	mso-ascii-font-family:Calibri; 	mso-ascii-theme-font:minor-latin; 	mso-hansi-font-family:Calibri; 	mso-hansi-theme-font:minor-latin; 	mso-bidi-font-family:"Times New Roman"; 	mso-bidi-theme-font:minor-bidi;}  <![endif]-->   <![endif]-->       <![endif]-->Guy Buchanan

 Ramona, CA

 Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded

 

 

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Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

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