Source for 5MM or 3/16 HP tubing

[Wes]

I'm trying to make replacement probes for a fasttest connector.

The tubing is 5 mm and about 1.5MM [.060"] id. I took a chance on some 3/16" 0.090" since
it was close and available at Mcmasters. I think it is going to be weak where I have to
thread it.

The only tubing I know of is even close on ID is 1/4" 150PSI tubing.

http://www.highpressure.com/valves_fittings.asp?ID=44&ptype=t&section=4

Having worked with waterjet systems, that came to mind. I could make it work but I'd
have to remake other parts of the tester.

Anyone have a source for what I'm looking for? 304 SS would be nice, carbon steel
acceptable.

Thanks,

Wes

[sta...@prolynx.com]

On Mar 31, 5:37 pm, Wes <clu...@lycos.com> wrote:
> I'm trying to make replacement probes for a fasttest connector.
>
> The tubing is 5 mm and about 1.5MM [.060"] id.  I took a chance on some 3/16" 0.090" since
> it was close and available at Mcmasters.  I think it is going to be weak where I have to
> thread it.
>
> The only tubing I know of is even close on ID is 1/4" 150PSI tubing.
>

> http://www.highpressure.com/valves_fittings.asp?ID=44&ptype=t§ion=4

>
> Having worked with waterjet systems,  that came to mind.  I could make it work but I'd
> have to remake other parts of the tester.
>
> Anyone have a source for what I'm looking for?  304 SS would be nice, carbon steel
> acceptable.
>
> Thanks,
>
> Wes

What do you consider high-pressure? Real high pressure lines use
compression or flare fittings, not threads on the tubing, just because
threads are a built-in stress riser.

Stan

[Wes]

sta...@prolynx.com wrote:

>What do you consider high-pressure? Real high pressure lines use
>compression or flare fittings, not threads on the tubing, just because
>threads are a built-in stress riser.

I'm using the high pressure tubing for a low pressure application.

Back when I worked on 60,000 psi systems, the connections were made with a gland nut, a
collar that was screwed on left hand threads cut into the piping, the end of the tubing
was coned with a cone cutter and then the assembly was screwed into a fitting with a
socket for the coned end to fit into. I believe the cones were cut for an interference
fit iirc. It has been a decade or so since I have worked with the stuff.

http://www.spark-co.com/outillage.php

The link above is the type of high pressure plumbing I just described that does have
threads. The stuff is very heavy wall.

Wes

[Jerry Wass]

sta...@prolynx.com wrote:
> On Mar 31, 5:37 pm, Wes <clu...@lycos.com> wrote:
>> I'm trying to make replacement probes for a fasttest connector.
>>
>> The tubing is 5 mm and about 1.5MM [.060"] id. I took a chance on some 3/16" 0.090" since
>> it was close and available at Mcmasters. I think it is going to be weak where I have to
>> thread it.
>>
>> The only tubing I know of is even close on ID is 1/4" 150PSI tubing.
>>

>> http://www.highpressure.com/valves_fittings.asp?ID=44&ptype=t告on=4

>>
>> Having worked with waterjet systems, that came to mind. I could make it work but I'd
>> have to remake other parts of the tester.
>>
>> Anyone have a source for what I'm looking for? 304 SS would be nice, carbon steel
>> acceptable.
>>
>> Thanks,
>>
>> Wes
>
> What do you consider high-pressure? Real high pressure lines use
> compression or flare fittings, not threads on the tubing, just because
> threads are a built-in stress riser.
>
> Stan

You say 3/16" .090 is this .090 wall thickness? If so, then the
bore of the tube must be only .0075-----3/16=.1875 2X.090=.180--???

[Wes]

Jerry Wass <wassb...@tds.net> wrote:

>You say 3/16" .090 is this .090 wall thickness? If so, then the
>bore of the tube must be only .0075-----3/16=.1875 2X.090=.180--???

I'm trying to get something closer to 0.060" ID, the stuff I have now is 0.090" ID.

Wes