Additional comments were posted by the owner:

# Joe Skinner wrote on Monday, May 22, 2006 (PDT):
# the tank was drained, not as often as it should have been and it had a
pop-off valve also but things just didn't work the regulator had a small
copper line running to it and it got gummed up and the pop-off was
rusted fast. the inside of the tank shows alot of rust pitting on the
bottom side of the tank(now both on top and bottom of the third pic).
like i said earlier it seems odd that the tank blew before the pvc lines
but if you are plumbing a shop you plan to spend alot of time in i'd use
piping.

Ecnerwal wrote:
In article ,
"Ken Davey" wrote:


No over pressure safety valve I take it?


Or perhaps more commonly, one there, never checked, corroded into a
non-operating condition?