I purchased a bottle from a guy, and it has a couple open fittings. On the bottom it has the large opening, I know I will need an adapter to goto the main line for that. On the top there is a vented fitting with a 3000 psi disc inside. on the side there is a 1/8" female fitting. can i put a pressure gauge here, or do i have to get another blowoff fitting to go there?
chris
chris