The burner, provided by Rex Price (hybridburners.com), is mounted on an aluminum plate and carries a flame from just over 0 (zero) PSI and up. This burner rocks!
The gas plumbing is 1/4 inch copper tubing with various hardware store fittings, valves, and adapters. The Fisher regulator was obtained from Larry Zoeller. As can be seen, the plumbing is mounted on an aluminum plate bolted to the propane tank. Idle gas flow is set at 1/2 PSI via a needle valve and open throttle is set at 3 PSI. I've operated the burner at 15 PSI, but this is way too much for a simple melting furnace.
Thanks for visiting and enjoy the pictures.
The following 2 pictures show the preassembly of the firebrick, aluminum base, and angle iron frame.