I’m trying to get a metal single line tank usable.
I got rid of the light rust inside, made new gaskets, etc.
I was trying to confirm that the pick-up tube was
not plugged, but I can’t seem to get flow either way.
Is there a check valve in the system?
Instead of un-soldering the screen, I taped a piece
of vinyl tubing over the screen and tried blowing
air thru. Did the same thing from the outlet end
with now luck. Guess I’ll un-solder the screen and
try rodding out the tube, unless someone has
a better idea?
I think mine is like this diagram.

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