I have two of them, I bought them off a guy who got them from a plant, they were 10-15 years old but never used. As one poster mentioned, these were meant to use as eye-washing stations, stand-alone and pressurized so you could just go over and spray your eyes in case of contamination or whatever. They have awesome labels on them that say "EYE WASH STATION" in yellow and black. What I've found out is that they are so damn heavy it basically takes two people to carry or lift when full! But then again I am no Ahnold.