When I was studying for my epa test I remember that recovery tanks are supposed to be grey with a yellow top. However, I have seen a lot of solid grey or solid off-white tanks for sale lately that claim to be DOT approved.
Would these have to have yellow paint on the top before shipping to a reclaim facility?
One more dumb question: The instructions for my recovery unit say to connect the outlet hose to the liquid valve of the recovery tank. What if the recovery tank is the one valve type? Should the tank be upside down during recovery?