homemade vacuum pump

[Bigmac2317]

This hame made vacuum pump will not work a refrigerator compressor can only pull a 28.5 or 40,000 microns to get water to turn into water wapor you must reach a vacuum level of 29,3 15,000 microns or lower preferrable 500 microns

[eastcoasthoopty]

nice.....

[clockguy2]

I use one of these compressors for auto A/C work. They work fine as long as you keep them upright. I like the price best of all. I cut the screw-on fitting from a refrigerant can tap, drilled it out and soldered it onto the vacuum side tube. Now, my gauges can screw directly on the compressor.

[womackke]

probobly 30 inches mercury which would be about normal for a good deep vacuum pump

[archeryman5000]

no such thing as 30 inches of vacuum, if you are using regular refrigeration gauges they are not accurate enough for high vacuum.

[calatore65]

otro pendejo que no sabe explicar.....

[himtnman]

according to my Physics professors, the only way to an absolute vacuum is to get to aboslute zero, whitch truely hasn't been done. We've gotten with in tenths of a degree of minus 273 degrees. Even space is not, nor cannot be a true vacuum. So you can "suck" with your pumps all you want you'll still never get to the altimate ATP = nothing, zero

[himtnman]

according to my Physics professors, the only way to an absolute vacuum is to get to aboslute zero, whitch truely hasn't been done. We've gotten with in tenths of a degree of minus 273 degrees. Even space is not, nor cannot be a true vacuum.

[Xu53r1X]

@bladder1010 what world do u live in

[thenascaraddict]

That looks rank.

[mystiqueman366]

i made one of these to pull a vacuum on my car's a/c. works great considering the compressor is about 50 years old.

[sirevil120]

without a micron gauge you cant tell what you are pulling honestly... too much sugar for a dime here man.

[vmelkon]

26 in Hg doesn't sound like much. Or am I wrong? I think you can get more by using a syringe, and you pull the syringe with your hand.

[beardedoneder]

@vmelkon

Yeah, it's sufficient for vacuum forming, home breweries, vacuum packing food, etc.

26 in/hg is not enough for HVAC applications. At that pressure, water needs 125º F to boil. 29 in/hg is need for water to boil at 77º F. You could get by with 28.5 on a hot day. That will remove all of the air and water from the system at typical ambient temperatures. A single liquid line filter/dryer will remove any remaining transient moisture or other impurities, except severe acid contamination.

[owvenus]

why do you make a video thats not clear ???

[toranacar]

Hello

How much vacuum can this pump pull?

I need about 29 inches of mercury for a vacuum chamber. (the gauge is a little difficult to read)

Thanks

[Aussie50]

A small commercial fridge compressor will pull 30in/hg if its in good working order.

Like Danfoss SC series or Kirby/Tecumseh compressors of the 1/2 - 3/4Hp size

[toranacar]

Thanks

[hpaddyh]

no small refrigeration compressor is going to pull a 30 in vaccum, Won't even come close to a decent micron level.

Won't last with alot of use. How is compressor going to cool itself.

[Aussie50]

They do pull 30in/hg, but not good micron level. I would never use one for HVAC vac down.

Temp wise, i have never had a problem with fridge compressors provided you use a small condenser fan to keep it cool.

[fhtn020273]

So you have pulled a fractional hp compressor

to 760 microns. I used to make my own way back when 40 + years ago but learned quick it was no substitute.

[bladder1010]

@Aussie50

Maybe you're under the ocean! You can't pull more vaccuum than there is atmospheric pressure. Basic physics. "Standard" atmospheric pressure is 29.92"Hg at sea level. It's virtually impossible to get even that with a laboratory system.

[fuelzer]

@bladder1010 whatever........he notes that "compressor pulling 26hg" is your head up your ass.

[paulofpings]

@bladder1010 Do you live under the ocean with spongebob squarepants?

[gtasound]

@bladder1010 Incorrect. Your theory doesn't apply to a closed loop system. Open loop, yes.

[bladder1010]

@gtasound

Uh, I hate to break it to you, but it's not "my theory". Care to elaborate on what you mean by "closed loop"?

[gtasound]

@bladder1010 A closed loop, in refrigeration, is a system that cycles itself without allowing foreign material in, or out. Go have yourself a quick read up on the basics of refrigeration. I should have mentioned that I was talking about refrigeration; I only assumed because you made mention of sea level, atmospheric pressure, and laboratory systems.

Now I know it's not your theory; I was only subcontexting it as your quote. Have you ever seen water boil in a walk-in chiller?

[bladder1010]

@gtasound Okay, but closed-loop, or not, "vacuum" is always expressed relative to atmospheric pressure. "Standard" atmospheric pressure at sea-level here on Earth is generally taken to be 14.696 PSIA (absolute pressure, as opposed to gauge pressure, ie., 1 ATM). The argument was made by someone in the comments that they thought you could generate a vacuum of < 0 PSIA. You simply can't, no matter what. *That's* what I was talking about.

[gtasound]

@bladder1010 True

[eviled80]

i just have the compressor, how do I wire it to the mains?

any help appreciated thanks

Ed

[kirkatanasoff]

look for the letters and numbers on top of the compressor and look in a nomenclature book possibly copelan or other manufactures

[bigbuffbaldguy]

Right on a homemade penis pump! XD

[DeTijuanaMexico]

i have a home made recover system

[romaurie]

It's 1/10th. H.P.

The smallest comp. on the market is 1\14th. H.P. found on "Red Bull's" small display fridges.

I nomally use a 1/3rd. H.P. comp. for air compressors or vacuum pumps.

[romaurie]

Do you use it for vacing small systems?

Whenever the the large vacuum pumps at work are out, I use a small pump like yours.Ideal for small refrigerators or a/c units.