I bought a used compressor from CL. Kellogg 331tv with a non-original Dayton 5 hp motor.
The tank is odd. Measures to be about 60 gallons horizontal, but it's narrower with larger diameter then a typical 60 gal tank.No certification plate welded to it anywhere. Only numbers stamped on it are shown in the pic - on the endcap, same on both. Nothing I could find on them.
The drain is on the bottom of one end cap - threaded directly to the tank, no bung. The output is on the same endcap, welded bung. The input between the pump and motor is a welded bung. Both of these are maybe 3/4" npt. That's it... no other holes anywhere. Not even for a safety valve. And the endcap welds aren't very straight. I'm suspecting it's a DIY job but can't be certain.
Got it home... had to take it apart to be able to transport. In process of putting it back together I decided to see what's going on inside. Poked a piece of wire into the drain... wholly rust batman. I'm not talking some flakes... but pieces 3-4-5-6 peas big. Flushed it out with water... much more came out. Maybe 5-6 cups worth.
Put flashlight into the output port and peered into the input port... the rust seems to be very thick, maybe an inch. And it's not loose flake, several flushes of water didn't get it out.
So... the questions. Was there ever a time certification plates weren't required for pressure vessels, or did I stumble onto someone's effort of a custom tank? Any ideas to more effectively loosen up the hardened rust with only a ~1" hole?
The tank is odd. Measures to be about 60 gallons horizontal, but it's narrower with larger diameter then a typical 60 gal tank.No certification plate welded to it anywhere. Only numbers stamped on it are shown in the pic - on the endcap, same on both. Nothing I could find on them.
The drain is on the bottom of one end cap - threaded directly to the tank, no bung. The output is on the same endcap, welded bung. The input between the pump and motor is a welded bung. Both of these are maybe 3/4" npt. That's it... no other holes anywhere. Not even for a safety valve. And the endcap welds aren't very straight. I'm suspecting it's a DIY job but can't be certain.
Got it home... had to take it apart to be able to transport. In process of putting it back together I decided to see what's going on inside. Poked a piece of wire into the drain... wholly rust batman. I'm not talking some flakes... but pieces 3-4-5-6 peas big. Flushed it out with water... much more came out. Maybe 5-6 cups worth.
Put flashlight into the output port and peered into the input port... the rust seems to be very thick, maybe an inch. And it's not loose flake, several flushes of water didn't get it out.
So... the questions. Was there ever a time certification plates weren't required for pressure vessels, or did I stumble onto someone's effort of a custom tank? Any ideas to more effectively loosen up the hardened rust with only a ~1" hole?
