I just picked up a 60 gallon compressor.
The tank is ASME rated at 200 PSI WP and 450 Deg F.
Manufacture date of 1989.
The outside looks good rust and dent wise. (Very little surface rust on feet and such, no dents, no significant scratches)
The pump is a Rol-Air K25 from about the same time.
Looks like these were good to 200 PSI but usually run at 175 PSI.
I plan to use it to 150 or 175 PSI if all is good.
The drain valve looks to work well, and the air filer and oil look good, so I am assuming it was well maintained. Story I was given was it was from a body shop (looks like it, lots of paint on the outside), and they needed a bigger compressor. The body guy (who I bought it from) bought it, brought it home, but never hooked it up.
So, other than pulling a plug to look inside, is there an easy way to check for signs of rust?
I have taped the tank all over including on the bottom and it sounds solid.
I was thinking of using some small amount of liquid (Maybe water or light oil) in the tank and then drain into a clean rag to get an idea of what might be in the tank.
I was also going to try to see if I could thread a bore-scope into the tank, but not sure what to look for. I am assuming that light surface rust/discoloration is "OK" and scale and pitting are scrap time?
If the scope does not work, then are there are suggestions to get the plugs out of the tank?
Assuming it looks good, is there really any reason not to run it at 175 PSI.
Yes, I will be replacing the old 200 PSI blow-off safety valve and probably adding a second at a lower pressure.
Anything else I should be looking for or thinking about?
(Other than "Go get it hydro tested", or "Go buy a new one")
The tank is ASME rated at 200 PSI WP and 450 Deg F.
Manufacture date of 1989.
The outside looks good rust and dent wise. (Very little surface rust on feet and such, no dents, no significant scratches)
The pump is a Rol-Air K25 from about the same time.
Looks like these were good to 200 PSI but usually run at 175 PSI.
I plan to use it to 150 or 175 PSI if all is good.
The drain valve looks to work well, and the air filer and oil look good, so I am assuming it was well maintained. Story I was given was it was from a body shop (looks like it, lots of paint on the outside), and they needed a bigger compressor. The body guy (who I bought it from) bought it, brought it home, but never hooked it up.
So, other than pulling a plug to look inside, is there an easy way to check for signs of rust?
I have taped the tank all over including on the bottom and it sounds solid.
I was thinking of using some small amount of liquid (Maybe water or light oil) in the tank and then drain into a clean rag to get an idea of what might be in the tank.
I was also going to try to see if I could thread a bore-scope into the tank, but not sure what to look for. I am assuming that light surface rust/discoloration is "OK" and scale and pitting are scrap time?
If the scope does not work, then are there are suggestions to get the plugs out of the tank?
Assuming it looks good, is there really any reason not to run it at 175 PSI.
Yes, I will be replacing the old 200 PSI blow-off safety valve and probably adding a second at a lower pressure.
Anything else I should be looking for or thinking about?
(Other than "Go get it hydro tested", or "Go buy a new one")
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