[AR] Re: Blank flare fittings
- From: George Herbert <george.herbert@xxxxxxxxx>
- To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
- Date: Mon, 14 Oct 2013 16:01:32 -0700
2024 is SCC sensitive? Or did you have another alloy in mind?
On Mon, Oct 14, 2013 at 3:45 PM, Ben Brockert <wikkit@xxxxxxxxx> wrote:
> 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
> >> >
> >> >
> >
> >
> >
>
>
--
-george william herbert
george.herbert@xxxxxxxxx
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