OK... Now that everyone has had fun at my expense ;) What I was trying to
figure out was the answer to a question one of the guys in the office asked
when look at a pic of me in doubled up PST 104's. His comment was "Gawd those
look heavy". I know the tanks empty weight 45 lbs each (per PST home page).
They were filled to 3000 PSI give or take a few PSI.
Richard