Saw a tech using these..

[hvac5646]

Thanks guys.

I got the YJs from HVCRtools.

The advice on using a the ball valve hose was a great suggestion.

[ryan1088]

[QUOTE=hvacrmedic;15202431]

They went out of calibration, couldn't even be zeroed. I shipped them to Doug Lockhart so he could look them over. He cut his finger on one of them and promptly smashed them with a sledge hammer. It's a long story.

Doesn't sound like too long of a story!!!

I have a set of these and I find them very useful for all the reasons everyone uses them for....

[ACFIXR]

Mine are Marsh's on 90* quick connects.

I use mine mostly to verify proper compressor phasing at start up.

[hvacrmedic]

[QUOTE=ryan1088;15204071]

Doesn't sound like too long of a story!!!

LOL! Well the "rest of the story" is long. Let's just say that Doug isn't very fond of Ritchie Engineering Company, Inc.

[dijit]

We were just talking about these the other day, or a homemade version at least. I like the idea of them, but I think the rigidity of it would cause problems attaching it to some units. Actually, I should correct that by saying some "installs"....it's not the units fault.

I use one and it is true that you can have clearance issues. And sometimes it is the unit's fault. On some models, you have the schraeder on the back side of the service valve and it doesn't fit because of other factory stuff in the way. They are not flexible at all. In these cases, I have one of those really short hose extensions with a built-in ball valve that is meant to go on the end of a regular hose. It has a male end and a female end and takes care of the problem. If you make one, just find a fitting to attach the gauge thread to that hose extension thread because you will have clearance issues with the other setup.

[71CHOPS]

I use them to Pm equipment all the time. minimizes removing a few ounces of refrigerant each PM....

[jnsrose]

I have a couple like that mounted on thumbscrew type core depressors.
http://www.cdvalve.com/product-categ.../cd2070/10-169

I mostly use them for getting oil pressure readings on simi-hermetic compressors.
The depressor lets me open the valve after connecting the gauge, and close it before removing it, so there is almost no mess made.

I did not know these thumb screw depressors existed. I think I may have to get a few. Any common suppliers carrying them or are they only online?

[itsiceman]

On the thumb screw ones release the pressure on your hose connection otherwise your oring blows out

[PMARS2345]

I did not know these thumb screw depressors existed. I think I may have to get a few. Any common suppliers carrying them or are they only online?

C & D makes them.

[76olds]

I did not know these thumb screw depressors existed. I think I may have to get a few. Any common suppliers carrying them or are they only online?

I get them at Johnstone supply.

Part #H24-849.


And watch when you remove them, as already mentioned, the little o-ring can blow out real easy (they include spares).

[fliks]

I had one many years ago but was not too impressed, constantly adj. I think I got mine at Johnstones Supply.

[mark beiser]

On the thumb screw ones release the pressure on your hose connection otherwise your oring blows out

C & D makes them.

I get them at Johnstone supply.

Part #H24-849.


And watch when you remove them, as already mentioned, the little o-ring can blow out real easy (they include spares).

The ones I linked in my previous post don't have the o-ring blowout issue, because the valve can be back seated.
After disconnecting, you can crack the valve open slightly to slowly release the pressure held in the tube/hose.
They are not the same ones 76olds gave a Johnstone part number for.

http://www.hvacr-tools.com/product/c...or-back-seated

[uniservice]

Used em for years on critically charged cascade systems (blood and tissue freezers) & ice machines. They're in my Veto.