[AR] Re: Blank flare fittings
- From: Ben Brockert <wikkit@xxxxxxxxx>
- To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
- Date: Mon, 14 Oct 2013 16:45:21 -0600
Keep in mind that some of the alloys used in AN fittings are
susceptible to stress corrosion cracking when the anodization is
disrupted. Specifically, they can be sensitive to chlorides, so it's
important to not expose them to salt water. For an internal
modification that's unlikely unless you do something like putting salt
in the fuel to color the flame.
It's an uncommon failure but it cost SpaceX a Falcon 1, so it seems
worth learning from their experience.
On Sat, Oct 12, 2013 at 3:20 PM, Ed Kelleher <Pres@xxxxxxxxxxxxxxxxxxxxx> wrote:
> Thank you Paul, Ben and others.
>
> I guess when there aren't any of the thing you think you need out there -
> you need to rethink. :-)
>
> The -4 with the 1/4" NPT has enough material on the NPT side to work with.
> I want to put a check valve in there.
>
> Welding skill and CNC are down the road a bit, but taps, drills and cutting
> threads I can handle.
>
> Thanks again.
>
> Ed Kelleher
>
>
>
> At 09:09 PM 10/11/2013, Ben Brockert wrote:
>>
>> You can also weld normal AN fittings together to make new and weird
>> fittings. A plug welded to a short nipple would accomplish what you're
>> asking for.
>>
>> Or tap an AN-4 to 1/4npt nipple on the NPT side and screw in a socket
>> cap screw to accomplish the same thing with hand tools and no welder
>> or lathe.
>>
>> On Fri, Oct 11, 2013 at 12:51 PM, Ed Kelleher
>> <Pres@xxxxxxxxxxxxxxxxxxxxx> wrote:
>> > Are blank AN/JIC flare fittings available?
>> >
>> > Fittings with no holes through them. Preferably aluminum.
>> >
>> > Like a male NPT union with a 1/4" tube flare on one end and a 1/4" NPT
>> > on
>> > the other, but with no central hole?
>> >
>> > Ed Kelleher
>> >
>> >
>
>
>
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