Saw a tech using these..

[hvac5646]

https://encrypted-tbn2.gstatic.com/i...J4QSiRuB60u67A


I think the would be a welcome addition to my tool bucket before I haul out my digitals.

Lot of forum members who post on You Tube use them.

I would add a JB anti blow back fitting, how ever. That with an accurate differential thermometer would be money well spent for an expedient test of a suspect system.




40342

[Can-Gas]

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.

[ClimateCntlJohn]

I use them ALL the time. Whenever I'm doing maintenance I use those first, and then I'll whip out the digital's if I need to. I use BV on mine and also carry around a 6" hose incase I need to get in a tight space....perfect example being the retarded way Rheem installs their valves on some ODU's. I'm thinkin about getting another set and calibrate that for a different common reefer just to have them. United Reefer should have everything you need to rig this up, at least the one over my way does.

[Legacy80]

I'm confused..... I've been using a guage set up like this for over 15 yrs....... I use it to check seal pressures, and to verify transducer readings on chillers........ am I missing something special about the one in the picture that was posted?

[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.

[hvac5646]

https://encrypted-tbn2.gstatic.com/i...J4QSiRuB60u67A

I think the would be a welcome addition to my tool bucket before I haul out my digitals.

Lot of forum members who post on You Tube use them.

I would add a JB anti blow back fitting, how ever. That with an accurate differential thermometer would be money well spent for an expedient test of a suspect system.


its a 40342

[hvac wiz 79]

I use these on all critically charged systems. Great to have!

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[VTP99]

I thought I already responded to this thread.

[hvac wiz 79]

Haha. Me too.

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[ammoniadog]

How about an electronic version of that, in a little hard plastic padded case that can have a permanent place in my tool bag?

By the way, if it had the "anti-blowback" fitting on it, It would need a way to vent it after each use.

Now that I am thinking of it, how about just a cheap tire gauge like device with the stick that pops out, specially designed for refrigeration use? That would be even easier to shove in the tool bag.

Now I just need to get a job at "Yellow Jacket" or "JB" and convince them to build my device. Then I can lay back and collect my millions $ $

[doc havoc]

Those gauges are a must have (IMO) if you're working on small, critically charged systems. I see them used on ice machines alot. Also nice for checking oil pump pressure. You don't end up with a hose full of oil.

[hotrodrob]

I have something similar. Mine has a 6" hose attached. sometimes a little bendy is nice. I have a set in my backpack. as a guy who works a lot downtown and will need to walk several blocks its nice to have them in my bag versus carrying a manifold set around.

[hvac wiz 79]

I have em. Great for critically charged boxes using a few ounces. No need for any other fittings. You remove next to none of the charge

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