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Not to slander your work iceman but....
Have you thought about cutting in 2-3 grooves for O-rings to sit in to get a better seal on your tube connection?

If the I.D. of the tube is smooth, then...

So.....
What you are saying is ....if we make them like this everyone in the world will buy them.

These look pretty.
Only an HVAC guy could say that.

Interesting.... sorry I my be a bit slow on the uptake but you are saying that AN fittings are better for sealing an evacuation?
Like these?
http://injector-rehab.com/shop/Hose-End-Fittings/
...

Good God Man!

What a mess...
Just kidding.

What in the world did you do to that Deluxe manifold to hook up all those hoses?
What you need is a commercial manifold for that kind of work....

Nice iceman.

Having all the torque with no traction is good for doing burnouts but not for speed.
Nice addition to the automotive analogy.

Larger hoses, give your torque pump the traction it...

Jayguy,

In your example you are correct.
Even if it is an extreme example.

Of course you would never use a 1.3 CFM pump on a 3,000 chiller system. That's just stupid. Not even two or three of...

Poodle Head,

You are more correct than you even know.
It is soooo refreshing to hear (read) another human being say what I have been preaching all over the world.

The first question from a...

Hey,

The RL-2 is rock solid, and yes it pulls down to 15 microns. Even with the smiley face.

However, I would get the RL-4. It has 3/8" and 1/4" connections and yes.... a drain plug.
Nearly...

Its nice to see the vacuum roll down from 760,000 microns to 500 but if manufacturers did that, you would lose the accuracy where you need it.... (6000 down to 500 microns)
The wider the scale the...

Chris from Appion is right.

It's all about how you hook it up.

RL-8 Pump by REFCO.
Made in Switzerland.
Will pull down to 15 microns or less. (If your digital vac gauge is good enough to measure that low)
Small, light, reliable.

But I work here so........

iceman is correct,

Sometimes the sensor has a leak inside its plastic housing body.
Usually at the top where the wires come out of the actual sensor body.
You will need to disassemble it and...

Its a very good vacuum pump. One of our very best products and has an excellent well earned reputation throughout Europe.
With the right hose set-up and vacuum rated CRT, you are done in time to...

637841Exactly as Hearthman stated,
There is no,"standard" for vacuum rated.
It is a marketing term as you say.
However, what it implies is, it wont leak under negative pressure.

Nearly all...

Good stuff guys thanks.

The issue with manufacturing large I.D. vacuum hoses is the fittings to get them down to 1/4" SAE.
Just looking at the creative braising out there proves the point.
Its...

Copper quality has a lot to do with it.

I doing tests on our newish hydraulic swaging tool I would get some copper that splits and other copper samples would not.
Of course smaller diameter...

Yep, there are many good and bad grades of Thermocouples and Thermistors.
Maybe you are right, the use of cheap or un-isolated thermocouples have given them a questionable reputation.
Maybe its...

How do you mean? "With the exception if Fieldpiece those others running K type are either recalled or just a blip on the radar."
On that list Hilmor is the only digital manifold that is recalled. ...

Well here is the way I see it on the digital manifolds: Data taken direct from each manufactures published data.
You draw your own conclusions.

CPS Thermistor +/- 0.36°F (0.2°C)...

Hello Brent, thanks for the input.

I agree a coin cell battery would keep the stubby small, but it wont be enough juice to make it practical.
The display will take too much power for that and...

Thanks for the input jtrammel,

Its easier to source, test, manufacture and distribute single multi-use products.
Especially if it is experimental.....

The accuracy loss on a digital gauge with...

Well, we always have stuff, "under development."

I got a digital gauge but it is a Class 0.05%FS.
It's made for gauge calibration as a certified reference standard.
Every decent parts house should have one for all you working guys to regularly...

Nice Iceman!

We can do this.
Seems only a battery issue to me.....
And pricing of course.
I can make anything, but will it sell in enough numbers to warrant the time and effort?

Add a...

HVAC Vegas,

No that is not weird at all.
It is too expensive to manufacture every little bit of a finished product.
If you need an electrical cable, you buy it from a cable manufacturing...

That is classic!

" Yea Bob! That's exactly how it's drawn on the plans." LOL

I know some early DFS systems used to have, "mixed phase" line-sets that had the liquid line ran inside the...

Daikin is a Japanese company as Asian as it gets.
With worldwide distribution rival or possibly better than Carrier Corp.

Just ask how the changes are going down in Texas where they bought up...

Hello Lytning,

Thank you.
That's a new one for me. May I ask,....
If you valve off or cap off the vac pump input(s) and open the gas ballast valve, (assuming that you have one) that will draw...

Yes, I will try. Thanks for the props.

Just busy with work, family and travel.

Izadoka, hit the nail on the head. This is the set-up to use. Although, there are many good Vac gauges out there not just Blu-Vac.
Use vacuum rated hoses because your standard hoses are permeable....

Looking at your set-up.

Is the analog vacuum gauge hooked up on the red hose going to that header pipe?

If so, your gauge is reading approx. 3Mb which is = to 2,250 Microns.
You YJ vacuum...

594001594011


Hello Brian8383,

Since you asked for my personal opinion..... Of course Digital manifolds are faster, generally more accurate, and give you the SH /SC info right up front....

I sure see a lot of Klein tools in those bags....

Try the REFCO Enviro-Duo Machine.
It works.

Gentlemen,

Analog manifolds are definitely not all the same.

First off, you have different class types of gauge accuracy. Class 1.0, Class 1.6, Class 3/2/3 etc.... Be sure to have a minimum of...

Give them even more than two weeks. Try a month just to be more than fair, and it also gives you more time to get your finances in order & shop around for what you want to do.

Best advice I can...

Hey Guys,

I recommend you give a RL-4 or RL-8 series vacuum pump a go.
They will pull a vacuum down to 15 microns with fresh oil and a good quality digital vacuum gauge connected.
Very light...

Hey Cold Joe,

Good Advice, but I know Coca-Cola is currently in the process of changing their ENTIRE distribution chain to HC refrigerants.
The US market will probably be last ironically enough....

Made in China by a company called Zensen.

I do admit to liking the sturdy carry handle and the Hummer-ish looks though.

Hello,

I still cannot post pictures for the Selfie blog....

What am I doing wrong or is a setting on my profile?

GA-HVAC-Tech,

Yes, I agree. Most DFS are inherently more efficient than a ducted system, but except for the hidden ones, most Americans myself included would rather see a bar-style supply register...

Spot on! JPSmith.

In the Parma, Petro-Chemical, and food production especially dairy, nearly all the welded / braised piping connections are first filled with a, "forming gas"
of one type or...

Hello ECtoFix,
Yea, they are Class 2A refrigerants here also.
And yes, you are spot on. It must be used with new systems designed for R-32. Not as a drop in or replacement refrigerant.

As an...

I second what JPSmith says.

You can vent R-600 and R-290.
Mostly, what I see in the field is a long hose connected to a valve running out through a window or doorway.

However, Just so you know...

Hey WPTSKI,

Yea, some things are great, other things.... not so much. It all seems to balance out in the end though.
It just depends on what YOU think is important.
I was talking to a...

Figured it out.

C:\Users\PowellS\Desktop\Calibratiion gauge.JPG



C:\Users\PowellS\Desktop\RL-2 at 15.0 Microns.JPG

Update.

Iceman,

On the first run it only got to 19 microns.
I switched the micron gauge because I know one of my test micron gauges leaks.
Second run with the same RL-2 pump 35 L/Min....

Hey Iceman,

You are still on my list for field testing.
Yes, it will if you use the right and fresh oil and a good enough digital micron gauge.
Running a test right now so I can feel 100%...

Dachipsta,

Good post.
I have been trying to get the distribution channel to realize the value in having a class 0.05% calibration gauge at every parts house. (Not sure if the correct picture is...

Man! What you all are saying is music to my ears.
All I hear is, "your tools are too expensive." We are not ready for that. It wont sell in this or that country. blah blah, blah.
There is hope. ...