Can you help identify this fitting? - Woodworking Talk - Woodworkers Forum
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post #1 of 27 Old 10-06-2019, 09:35 AM Thread Starter
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Can you help identify this fitting?

This is a fitting that connects to the pump on my craftsman compressor. I need to duplicate it for my aftercooler project.

Does anyone know what this fitting is called?

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Last edited by difalkner; 10-06-2019 at 04:42 PM. Reason: show photo
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post #2 of 27 Old 10-06-2019, 01:03 PM
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It is bent aluminum tubing. Not a fitting per se.


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post #3 of 27 Old 10-06-2019, 02:24 PM Thread Starter
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I was referring to the fitting on the end where the nut is. There’s a shoulder as well. The shoulder appears to be a plastic seal that sits in a groove in the tubing.
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post #4 of 27 Old 10-06-2019, 03:02 PM
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Looks like a compression fitting to me:


Not that exact fitting of course, but that name
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post #5 of 27 Old 10-06-2019, 04:11 PM
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Yes, it is a style of compression fitting. Doubt that there is a groove in the tubing.


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post #6 of 27 Old 10-06-2019, 06:22 PM
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Quote:
Originally Posted by GeorgeC View Post
Yes, it is a style of compression fitting. Doubt that there is a groove in the tubing.


George
Ive seen some of those compression fitting seals dig pretty deep into the tubing, looks a lot like an intentional groove when that happens. Easy mistake to make looking at it
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post #7 of 27 Old 10-06-2019, 07:02 PM
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I have seen flaring tools and such for copper tubing, used for oil lines and hydraulics. They are common for automobile repair lifts and the hydraulics on bulldozers, back hoes, etc. They use similar compression fittings. I learned about them when I had a hydraulically lifted pool cover.

I have not seen one like this with a slot and a rubber o-ring.
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post #8 of 27 Old 10-06-2019, 07:27 PM
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Quick - could you roll the O-Ring down past the groove
and do another photo ?
do you have all the fittings needed now to do your cooler ?
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post #9 of 27 Old 10-06-2019, 07:42 PM
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as mentioned: it may be easier in the long run to
convert everything to flared fittings and copper tubing.
a flaring tool is less than $25 and will last 100 years.
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post #10 of 27 Old 10-06-2019, 09:11 PM
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That's definitely a compression fitting. That's not an o-ring, it has a flared face to meet the female. Check the receiving end for a mating recess.
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post #11 of 27 Old 10-06-2019, 10:01 PM Thread Starter
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There’s definitely a recess in the tube, you can see it on the inside of the tube. The thing that looks like an o-ring isn’t an o-ring. It is plastic. If there’s a matching recess, it’s very slight; not like for a regular compression sleeve.

My goal is to convert it to flare fittings but in order to do that, I need to find the right thread size that this fitting is. It screws directly into the pump. It’s an odd thread. It’s not the same as a flare fitting thread, or npt, or compression.

I’m wondering if it could be a hydraulic fitting.
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post #12 of 27 Old 10-06-2019, 10:07 PM
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do you have a NAPA auto parts store near you ??
in my town, they are real heros when it comes to
finding oddball parts.

.

.

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post #13 of 27 Old 10-06-2019, 10:14 PM Thread Starter
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Was able to slide that plastic fitting back after running it under hot water. Here’s a picture.
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post #14 of 27 Old 10-06-2019, 10:23 PM
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a little help
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post #15 of 27 Old 10-06-2019, 10:52 PM Thread Starter
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This just in....

I was able to roll that ring off the end of the tube allowing me to remove that nut and try it with a piece of 3/8 tube and a regular compression sleeve - it didn’t work. The compression sleeve is too wide.

No I’m wondering what tool puts that indentation in the end of the tubing?
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post #16 of 27 Old 10-06-2019, 11:16 PM
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Two things here. . . .

1 ~ It may be metric.

2 ~ I need a new compressor. You have dissuaded me from buying a Craftsman.

Rich
In furniture 1/32" is a Grand Canyon
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post #17 of 27 Old 10-07-2019, 10:41 AM
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Quote:
Originally Posted by Quickstep View Post
This just in....

I was able to roll that ring off the end of the tube allowing me to remove that nut and try it with a piece of 3/8 tube and a regular compression sleeve - it didn’t work. The compression sleeve is too wide.

No I’m wondering what tool puts that indentation in the end of the tubing?
HD has a section with all kinds of brass/bronze fittings, might be worth taking the fitting there and trying to match it up?

The other option might be a local hose manufacturer. I have a place locally that can make just about anything you want, and they are pretty reasonable.
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post #18 of 27 Old 10-07-2019, 11:40 AM
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Why not just order a duplicate of that part from Craftsman?


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post #19 of 27 Old 10-07-2019, 03:00 PM Thread Starter
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OK, uncle on finding the nut, how can I make the groove

So, I visited some more places today, one of which has a special tubing department. They were great, but ultimately didn't have what I needed.

Now, my thoughts turn to trying to figure out how to make that groove in a piece of 3/8" copper tubing. There must be a tool that does it, but dang if I've found it. Any ideas for jury rigging something for a one-time shot?

As always, your help and cleverness is greatly appreciated.
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post #20 of 27 Old 10-07-2019, 05:16 PM
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AN type fitting?

https://www.aircraftspruce.com/catal...hoCwK0QAvD_BwE

I would look for a fitting and try to get rid of the tube/ring setup.

Even to the extent that you might silver solder a piece of copper pipe into the fitting you have, maybe with a flare on the end that goes into the head. Once you are into the copper pipe you have many options on getting to the cooler and connecting.

Last edited by shoot summ; 10-07-2019 at 05:19 PM.
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