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Search: Posts Made By: STM
Forum: Geothermal & Heat Pumps 07-15-16, 10:21 AM
Replies: 20
Views: 4,986
Posted By NiHaoMike
Pressure limiting is to keep the suction pressure...

Pressure limiting is to keep the suction pressure from going too high, which is a feature not needed or desired in your application. You'll want the pressure to be able to go high since that...
Forum: Geothermal & Heat Pumps 07-15-16, 02:27 AM
Replies: 20
Views: 4,986
Posted By NiHaoMike
R134a in a R410a compressor isn't going to work...

R134a in a R410a compressor isn't going to work that well, even after accounting for the possibly higher condensing temperature. R22 or something similar (including R290) will be more optimal and...
Forum: Geothermal & Heat Pumps 07-14-16, 09:28 PM
Replies: 20
Views: 4,986
Posted By MEMPHIS91
This weekend is pretty full for me. But my job...

This weekend is pretty full for me. But my job has me traveling north MS a lot. Where are you in MS? I might be able to get it closer to you if I have a job near by. I've got a dehumidifier with your...
Forum: Geothermal & Heat Pumps 07-14-16, 08:42 AM
Replies: 31
Views: 6,244
Posted By jeff5may
Check out this comparison: Tests for various...

Check out this comparison:

Tests for various gas mixtures on MIG Welding (http://shdesigns.org/Welding/gasmix.shtml)

Dude is obviously not a master welder, but this is a good example of the...
Forum: Geothermal & Heat Pumps 07-14-16, 12:23 AM
Replies: 31
Views: 6,244
Posted By jeff5may
If the blend has more than about 10 percent CO2...

If the blend has more than about 10 percent CO2 in it, it is impossible to get spray transfer with all but the very expensive pulse welders. This equates to slow and low current without much spatter,...
Forum: Geothermal & Heat Pumps 07-13-16, 08:24 PM
Replies: 31
Views: 6,244
Posted By Xringer
CO2 pressure is not too hard to control. When I...

CO2 pressure is not too hard to control. When I used CO2 during my Sanyo #2 repair, I was able to dump the output end, into a little tub of water, so I could tweak the valve to get a slow stream of...
Forum: Geothermal & Heat Pumps 07-13-16, 07:41 PM
Replies: 20
Views: 4,986
Posted By MEMPHIS91
Howdy fellow Mississippian! I happen to have...

Howdy fellow Mississippian!
I happen to have some perfectly sized R22 compressors laying around that I wouldn't mind letting you have. If you are close enough to drive, shoot me a pm with your...
Forum: Geothermal & Heat Pumps 07-13-16, 12:40 PM
Replies: 31
Views: 6,244
Posted By pinballlooking
Check often good deals don’t last long. I paid...

Check often good deals don’t last long. I paid $10-$15 for one and $50 for another one a few months before that. You just never know what will pop up. The $50 one looked new but my place I get gas...
Forum: Geothermal & Heat Pumps 07-13-16, 11:36 AM
Replies: 31
Views: 6,244
Posted By pinballlooking
If you even get a smaller cylinder off Clist our...

If you even get a smaller cylinder off Clist our place just charged a upcharge for the bigger cylinder.
In my case a very big savings.
Forum: Geothermal & Heat Pumps 07-13-16, 11:25 AM
Replies: 31
Views: 6,244
Posted By mejunkhound
If you are going to get an 80 CF bottle for...

If you are going to get an 80 CF bottle for welding also, get it filled with Argon, more useful for welding and only about $15 more (at least around here) for an Argon refill vs. nitrogen.
Forum: Geothermal & Heat Pumps 07-12-16, 12:05 AM
Replies: 20
Views: 4,986
Posted By jeff5may
Your 5kbtu compressor is not the best choice for...

Your 5kbtu compressor is not the best choice for propane. Different compression ratio. More in line with r-134a. Expect only half the btu capacity running r-134a through it.

My advice would be to...
Forum: Geothermal & Heat Pumps 07-11-16, 11:45 PM
Replies: 31
Views: 6,244
Posted By jeff5may
Perfect tool for the job. You may be able to...

Perfect tool for the job. You may be able to cheaply rent a cylinder that would screw right into your regulator. Pay deposit, use the thing, get back deposit minus rent and weight of gas used.
Forum: Geothermal & Heat Pumps 07-11-16, 02:45 PM
Replies: 31
Views: 6,244
Posted By oil pan 4
Welding regulators usually have a max pressure of...

Welding regulators usually have a max pressure of 50psi.
That's what I have mine set at.
Forum: Geothermal & Heat Pumps 07-11-16, 01:25 PM
Replies: 20
Views: 4,986
Posted By AC_Hacker
There are several successful HP hot water...

There are several successful HP hot water heaters.

Search for them here.

Better than reinventing the wheel.

-AC_Hacker
Forum: Geothermal & Heat Pumps 07-11-16, 10:15 AM
Replies: 20
Views: 4,986
Posted By LJKeenan
your idea is nice but id use one of the element...

your idea is nice but id use one of the element holes for the coil instead of the cold inlet.
Forum: Geothermal & Heat Pumps 07-11-16, 09:22 AM
Replies: 31
Views: 6,244
Posted By jeff5may
if you are doing co2, DO use a regulator. It...

if you are doing co2, DO use a regulator. It likes to pop hoses. Then what you end up with is a fire extinguisher with a frozen shutoff valve. Definitely worth it.
Forum: Geothermal & Heat Pumps 07-11-16, 05:17 AM
Replies: 31
Views: 6,244
Posted By oil pan 4
1/4 SAE and 4AN are the same. Commonly used on...

1/4 SAE and 4AN are the same. Commonly used on manifold gauge sets.
Once in a while you will see a 3/8 for doing big systems.
Forum: Geothermal & Heat Pumps 07-10-16, 06:39 PM
Replies: 31
Views: 6,244
Posted By jeff5may
for the cheaper of us, here's a partial list of...

for the cheaper of us, here's a partial list of stuff:
paintball CO2
welding argon
welding co2
Forum: Geothermal & Heat Pumps 07-10-16, 02:28 PM
Replies: 31
Views: 6,244
Posted By oil pan 4
The cheap throw away bottles may have their...

The cheap throw away bottles may have their helium contaminated with oxygen to protect the buyers from the deserving natural selection normally caused by breathing lots of helium.
Plus you normally...
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