Today's Message Index:
----------------------
1. 08:50 AM - elbow fitting (Carlos Sa)
2. 09:28 AM - Re: elbow fitting (Jay Bannister)
3. 09:47 AM - Re: elbow fitting (FLYaDIVE)
4. 10:05 AM - Re: elbow fitting (Carlos Sa)
Message 1
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When attaching an elbow fitting (
http://www.aircraftspruce.ca/catalog/hapages/an822.php) to a fuel valve (or
anything else, for that matter), how can you have it oriented in a
particular direction AND ensure it is leak-free?
Carlos
Message 2
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| Subject: | Re: elbow fitting |
Carlos, I could not use that fitting.with the Andair fuel
selector valve, tighten leak free and get the proper orientati
on. I eventually used banjo fittings to get the proper or
ientation. -- Jay=0A =0A=0A =0A=0A =0A=0A-----Original Message
-----=0AFrom: Carlos Sa <carlossa52@gmail.com>=0ATo: zenith-list <zeni
th-list@matronics.com>=0ASent: Wed, Oct 29, 2014 10:52 am=0ASubject:
Zenith-List: elbow fitting=0A=0A=0AWhen attaching an elbow fittin
g (http://www.aircraftspruce.ca/catalog/hapages/an822.php) to a fuel v
alve (or anything else, for that matter), how can you have
it oriented in a particular direction AND ensure it is leak-
Message 3
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| Subject: | Re: elbow fitting |
Great question Carlos:
Here are some points to follow:
1 - Use a Fuel Proof Thread Sealant. This is especially true when dealing
with similar metals being tightened together - Example: Aluminum to
Aluminum.
If this is the case then Galling becomes an issue.
2 - Since you are dealing with pipe threads you only need a 3 thread
engagement for a seal to be good. So, what you then use is the ADDITIONAL
rotation/thread engagement for the lining up.
3 - This part is a bit more difficult and requires lots of additional
thought... Replace the NPT with some other type of thread arrangement.
Maybe a UNION, or a flair fitting.
Side note: It is always best if you can stay away from 90 Deg bends in a
fuel system. Each bend reduces the flow rate and can cause caviation.
Smooth round bends are best. Yes, I know when all else fails sometimes you
are forced to go the route of 90 deg bends.
Barry
On Wed, Oct 29, 2014 at 11:49 AM, Carlos Sa <carlossa52@gmail.com> wrote:
> When attaching an elbow fitting (
> http://www.aircraftspruce.ca/catalog/hapages/an822.php) to a fuel valve
> (or anything else, for that matter), how can you have it oriented in a
> particular direction AND ensure it is leak-free?
>
> Carlos
>
> *
>
>
> *
>
>
Message 4
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| Subject: | Re: elbow fitting |
Barry, thanks, that makes sense.
Carlos
On 29 October 2014 12:47, FLYaDIVE <flyadive@gmail.com> wrote:
> Great question Carlos:
>
> Here are some points to follow:
> 1 - Use a Fuel Proof Thread Sealant. This is especially true when dealing
> with similar metals being tightened together - Example: Aluminum to
> Aluminum.
> If this is the case then Galling becomes an issue.
>
> 2 - Since you are dealing with pipe threads you only need a 3 thread
> engagement for a seal to be good. So, what you then use is the ADDITIONAL
> rotation/thread engagement for the lining up.
>
> 3 - This part is a bit more difficult and requires lots of additional
> thought... Replace the NPT with some other type of thread arrangement.
> Maybe a UNION, or a flair fitting.
>
> Side note: It is always best if you can stay away from 90 Deg bends in a
> fuel system. Each bend reduces the flow rate and can cause caviation.
> Smooth round bends are best. Yes, I know when all else fails sometimes you
> are forced to go the route of 90 deg bends.
>
> Barry
>
> On Wed, Oct 29, 2014 at 11:49 AM, Carlos Sa <carlossa52@gmail.com> wrote:
>
>> When attaching an elbow fitting (
>> http://www.aircraftspruce.ca/catalog/hapages/an822.php) to a fuel valve
>> (or anything else, for that matter), how can you have it oriented in a
>> particular direction AND ensure it is leak-free?
>>
>> Carlos
>>
>> *
>>
>> arget="_blank">http://www.matronics.com/Navigator?Zenith-List <http://www.matronics.com/Navigator?Zenith-List>
>> tp://forums.matronics.com <http://forums.matronics.com>
>> _blank">http://www.matronics.com/contribution <http://www.matronics.com/contribution>
>>
>> *
>>
>>
> *
>
>
> *
>
>
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