Was able to remove the blowoff valve the other day. I think it's original(it's the same Kellogg Blue) and it says 200 psi on it.
Seems a bit high if that's the tanks rated pressure. Shouldn't the blowoff be rated under the tank pressure?
Regardless it won't be run that high. 175 psi absolute maximum. Once I get the correct compressor rebuilt i'll turn the cutout switch up. Right now with the 325TV on there, i don't think that old Delco motor will want to run the larger unit up to those kinds of pressures.
Drawing up plans on 1/2" copper supply lines now. Plans are to use a "lead-in" 1/2" air hose(with 1/2" fittings) from the compressor to the piping on the wall, as the compressor is on an old pallet that's on top of an antique wheeled "platform" to move it around in the shop if need be. When running it shakes a bit, so i don't' want to run solid copper pipe to it, or it'll crack.
Right now there's an iron pipe 90* into a ball valve and an old 1/2" Wilkerson water separator. From there it will go to the 1/2" lead in hose then to copper pipe mounted on the wall.
Ordered a new 1/2" Wilkerson Regulator yesterday that should be here tomorrow.
With this nice weather i think a few PTO days from work are in order to get this both started and finished.