Quote Originally Posted by DaveO View Post
Is it possible or practical to swap the valve out of a high pressure cylinder? For instance, if you owned a 125 cf oxygen cylinder but needed an argon cylinder, couldn't you ask the filling company to swap the oxygen valve for an argon valve. They probably wouldn't touch the bottle if you did it yourself, but it seems do-able.
All my LWSs will swap HP for HP same size no charge. Far as what is on the truck, bought a jacket in a pinch right off the truck and they just tacked it on the account.