If your shop sells HP tanks, they ought to be able to fill them as well.

I haven't used LP steels, so I can't tell you if they weigh less or not, but I can't believe any weight difference would be significant.

The only other thing I can think of to be aware of is the type of valve on the tank - yoke or DIN. DIN valves are quite common for HP rigs. Make sure you get valves that match your reg. My tanks have "Thermo Pro" valves which can actually be used with either yoke or DIN regs. There is an insert in the valve that is simply unthreaded to turn the valve into a DIN. These valves have a higher pressure rating that a standard yoke. Here's the Thermovalve website: http://www.thermovalves.com/stand_alone_valve.htm


Mountain Dog