Originally Posted by Lumatic
I have had 3 or 4 70s vintage tanks changed to OPD valves. Maybe they were recertified as a matter of course. Never had anybody balk at refilling. Are recertified tanks restamped? How can I tell if they are recertified?
Is there an sister agency of the mattress tag police lying in wait for me?
Tanks are supposed to be checked every time they are filled. Technically, if a tanks cert. has expired they can not refill it, period. Today there are so many different filling stations, most attended by folks who either don't care or were never properly trained you can get around the cert. I make it a habit to always have my tanks, old or new filled at the local filling station which is a major seller of different gases and supplies. They always check my tanks for integrity and also alway purge them which no one ever does any more. Yes, the tanks must be stamped witht the new date.