Air compressor tanks

[slackdaddy1]

I have a 60gal vertical IR T-30, new 5HP 1750 motor and it all runs great.
I have limited shop floor space,, And I am wanting to move the compressor into the walk in "attic" room.

I want to get a 30 gal horizontal tank with feet and large top plate, like a service truck compressor has, and swap my motor/pump onto it.
Can not find a used one (Market place, ebay, CL) that is not very old and rusty. New ones are over $1000

Questions:

are all 200psi rated tanks the same? or do some have thicker metal?
Since the inside is raw steel, it starts rusting on day 1,, a thinner tank may be rated for 200 psi new,, but 5 years, 10 years down the road?

Why are there no 30 gal horizontal ELECTRIC compressors?

 

[cvairwerks]

They make them, but you are in the range of a kilobuck or more to purchase. Craftsman used to have 5 or 6 different models on 30 gallon horizontal tanks. Campbell-Hausfeld has at least one that's in production still.

 

[GeoBruin]

Campbell Hausfeld Air Storage Tank https://a.co/d/19iZqqi

Edit: I just saw it has no top plate

Here we go.

https://www.grainger.com/product/5Z...8irQ0qM_XFSF-XTZTx4YrtDTMLaqjhVAaAk-QEALw_wcB

 

[slackdaddy1]

They make them, but you are in the range of a kilobuck or more to purchase. Craftsman used to have 5 or 6 different models on 30 gallon horizontal tanks. Campbell-Hausfeld has at least one that's in production still.

"If" I were to buy a new complete 30g horiz compressor, it would be a 5hp 1750rpm, 2 stage, I just do not see any.

 

[slackdaddy1]

Campbell Hausfeld Air Storage Tank https://a.co/d/19iZqqi

There is no top plate, my top plate would need to be at least 27" to accommodate my motor and pump.

 

[dscheidt]

Why are there no 30 gal horizontal ELECTRIC compressors?

In most places you find a compressor, floor space is more limited than vertical height. Horizontal models are in limited demand, at least once you get above pick it up size.

 

[OccupantRJ]

Have you considered noise and vibration transfer through the attic floor? It might sound like it is running on top of a drum head. They are loud enough on concrete. Have you considered a corner platform for the compressor to be able to use underneath for something else?

 

[Ders]

Why don't you just turn your vertical tank sideways and weld new feet and top plate onto it?

 

[slackdaddy1]

Have you considered noise and vibration transfer through the attic floor? It might sound like it is running on top of a drum head. They are loud enough on concrete. Have you considered a corner platform for the compressor to be able to use underneath for something else?

I did give that some thought.
It would not be sitting directly on the plywood floor of the attic. There would be 4x4s spanning 50" from doubled truss to doubled truss in the dormer, then the horz tank mounted to the 4x4s on isolation feet.
As far as sound waves, There is 8" of packed insulation between the plywood floor and the drywall.

 

[slackdaddy1]

Why don't you just turn your vertical tank sideways and weld new feet and top plate onto it?

A LOT of my problems would be solved if I would "allow" myself to weld to an air tank,,,
I have 3 migs and a tig in my shop,, and I am an OK welder.
Welding to an air tank by an amateur welder was always a "taboo" ?

 

[Firebrick43]

"If" I were to buy a new complete 30g horiz compressor, it would be a 5hp 1750rpm, 2 stage, I just do not see any.

Because that is to much pump for a 30 gallon tank and leads to short cycling of the motor

There is 8" of packed insulation between the plywood floor and the drywall.

It’s immaterial. The joist transmit it directly uncles you build an uncouple false ceiling below

 

[slackdaddy1]

Campbell Hausfeld Air Storage Tank https://a.co/d/19iZqqi

Edit: I just saw it has no top plate

Here we go.

https://www.grainger.com/product/5Z...8irQ0qM_XFSF-XTZTx4YrtDTMLaqjhVAaAk-QEALw_wcB

Problem with that one is the top plate is about 3-4 to short to fit my motor/compressor, and no room to weld tabs for the after cooler.
every thing I found that fits the bill is north of $1000 PLUS ~$250 freight

Whoops, we couldn't find that.

 

[rockbaron1]

Why don't you just turn your vertical tank sideways and weld new feet and top plate onto it?

I assume because welding on a pressure vessel is generally not recommended unless its getting hydro tested

 

[slackdaddy1]

Because that is to much pump for a 30 gallon tank and leads to short cycling of the motor


It’s immaterial. The joist transmit it directly uncles you build an uncouple false ceiling below

I'll have to do some research on the noise issue, and what can be done to midigate that.

I would have preferred a 40gal horz, but I have only seen 2 on Chinese service truck compressors,,
a 60 gal would be to big and heavy to get up the fold down access stairs.
The compressor would be sitting in a dormer area over the front wall, so weight is not an issue once it is set.
I could plumb in an additional 10 or 20 gal receiver tank if needed.

The shop is small and space is at a premium,, the compressor has to get out of the shop. I was thinking of putting it in the shed 30 feet away,, but running power then underground air piping with no way to put a water drain at the low point.
I am not a power user at all, but once in a great while i will sand blast with my pressure pot.

 

[jblnut]

Nothing says you have to have the motor and compressor mounted to the tank itself. Build yourself a new plate with some bathtub feet under it and plumb the whole works into your existing tank upstairs if that’ll cut down enough vertical height. I’m assuming that’s why you want a horizontal tank ? To cut down on how tall it is ? Hang it from rubber straps to prevent vibration transfer ?

I’ve mounted dozens of large (20hp+) heads onto 30gal tanks but there needs to be adequate storage in the entire system and the proper amount of flow between tanks to prevent short cycling. We’d frequently put a 15-20hp head on a 30gal tank but had 1” or larger plumbing between it and more storage. We usually spec’d out 10-20 gal of storage per hp depending if it was a screw, scroll or piston pump.

 

[Firebrick43]

A 30’ trench isn’t but a 1/2 days work by hand below the frost line. If the lines are not too oversized water in the line will not be an issue as the velocity of the air will push it out. Just put a long drip leg where it comes in the building to drain the water that’s pushed out.

I would use 3/4” pex inside a 1-1/2 electric conduit with sweeps.

A plus is the ground temps will do a good job of d

Or

Why not put a small 3’x3’ enclosure outside on the back wall of the shed?

 

[OccupantRJ]

Also consider heat during the summer. I have my 5hp compressor in a 8x20 insulated room and it gets so hot in there that I added a thermostatic controlled louvered sidewall fan to come on at 90f. I cabinet blast quite a bit with mine.

 

[GeoBruin]

Honestly a shed/enclosure off the back of the shop might be the best solution. Get it out of the shop completely. My shop is smaller than yours and it was taking up a ton of space, plus it was noisy and gave off a lot of heat.

I originally built a larger shed to house both the compressor and lawn tools in the same style as our other general storage shed, but we ended up relocating those so I built another dedicated compressor shed with enough room for a small hose reel and some other odds and ends.

It has a pool timer and a shutoff switch accessible from outside the shed. It also has a solar powered exhaust fan on the top to help pull the hot air out as well as a soffit vent.