[AR] Re: BSPP vs NPT [male fittings for direct connection to a 3d printed aluminum part]

From: roxanna Mason <rocketmaster.ken@xxxxxxxxx>
To: arocket@xxxxxxxxxxxxx
Date: Tue, 4 Apr 2023 16:39:35 -0700

Please let me know if you think there are better alternatives than 1/16 npt.
It depends on how much material you have to engage in, AN-02 is an
aircraft fitting that seats on the O-ring.
If you have the thickness I'd go with its 1/4" cousin, AN-04. Uses a
7/17-20 SAE straight thread.

Ken

On Tue, Apr 4, 2023 at 1:37 PM Hyunsoo Yoo <mind874@xxxxxxxxx> wrote:

BSPP vs NPT [male fittings for direct connection to a 3d printed aluminum
part]

Hello! My name is Hyunsoo Yoo, and I'm a Uni student in Seattle,
Washington.
I've been designing a liquid engine for a while now, and have decided to
3D print it out of aluminum.
I am currently in the process of deciding if I should tap 1/16 npt or 1/8
bspp directly onto the engine for thermal/pressure data collection.
The ideal connector would be a 1/16 bspp [iso parallel with gasket] to a
1/8 swagelok or compression fitting, but I have not been able to find it.
Npt sounds alright to me, but because I've heard many stories where the
threads got ripped off or leaked, I've been hesitant.

I'm wanting to keep the direct tap fittings on the engine as small as
possible.

Please let me know if you think there are better alternatives than 1/16
npt.

[image: image.png]
[image: image.png]
[image: image.png][image: image.png]

References:
- [AR] BSPP vs NPT [male fittings for direct connection to a 3d printed aluminum part]
  - From: Hyunsoo Yoo

[AR] Re: BSPP vs NPT [male fittings for direct connection to a 3d printed aluminum part]

Other related posts: