Technical Compression fitting keeps sliding off?

Glad these guys could help you out!
The “gozinta” comment had me rolling

 

Technical term ya know. The opposite is a "gozonta" as in this gozonta that...

 

We called those fittings “bijur” . I believe they are the manufacturer. Used a lot on automatic lubricators.

 

If it is screwing into that housing it makes no sense having a compression fitting.

You use a compression line to connect a steel or copper line to another line and the fittings would suggest that normally they connect to a flexible line or hose or another metal line of a different size. You slide the compression nut over the tube slide the tub through the compression sleeve into the fitting and then tighten the nut onto the fitting to tighten the compression sleeve on the tube holdng the tube firmly in place. I have never seen one going into a blind hole and there is no viable reason to use one in a blind hole.

 

There Needs to be a Female tapper ,
Not a blind Hole .
There been times on the fitting in question ,after removing No longer seal between line & fitting , I have soldier
after tightened, tube to fitting .
Then next time to remove , melt soldier

 

That's called a threaded sleeve. Similar to a compression fitting (nut and sleeve) but it has the sleeve portion incorporated into the nut. My '57 Chevy pickup had these on the oil pressure gauge line. You could be experiencing the tapered portion and tubing have deformed from the prior tightening so the sleeve portion doesn't tighten against it enough any more. I suggest getting a new one and possibly even a new fitting it goes into too.

 

THANK YOU! I knew I'd seen them before, smaller. There's a car here now with a Bijur system on it.

 

Those are similar, if not the same as what Ford used on many loadomatic distributor vacuum systems.

 

Also used on regular Ford distributors, such as the 260 in my '64 Fairlane.
I tried to find those fittings on the Eaton / Weatherhead site, but Weatherhead fittings appear to have been killed off, alas.

 

long time ago were known as 'ford nut'
bijur pump and fittings on every mill ever made practically-and lots of other machines like lathes as well

 

I have owned a couple military trucks through the years , Uncle Sugar used these style fittings on lots of stuff . We always used a slang term “ ringin the tube “ . Seems once the tube was over tightened “ compressed “ the fitting would never seal . Time for a new fitting and new piece of tubing to cure the leak . You would be amazed at how much fuel will leak from diesel injector return line with one of those leaking . NAPA did stock that style fitting in various sizes at one time . Also it requires female style fitting to work correctly as noted .

 

They are available from distributors of Fairview fittings, here:

https://www.fairviewfittings.com/products/catalog/?sub=93


Oddly, not all tube sizes are available in all fittings. For instance they sell the connector to fit 3/8" tube, but don't sell a 3/8" nut.