Originally Posted by jmhart
I didn't mean for it to sound like I had a tone....just letting you know that was something I already had decided on. The current burner is old and nearly rusted out, so even if it could have handled 20 psi to begin with, it might not now.
I understand and it's OK. Web communications can be like that at times. My point was mostly that the wide range adjustable regulators can sometimes be difficult to fine tune for precise flame control and the high pressure end of the range is seldom of any use unless you have a particularly hefty burner that guzzles a lot of fuel. A 0-15 should give you the best of both worlds with the ability to make fine adjustments and also fairly high pressure if and when you might need it.
A little off topic, but I think you might find it more difficult than expected to control the mash temps with a direct fired MT if you operate the burner manually. I tried that when initially experimenting with my RIMS and found it to be a major PIA. I eventually automated the burner with a solenoid valve and a temperature controller and it's working well for me. IOW, turning the burner on and off for short bursts of heat worked better than constantly making adjustments to the burner flame level. Seriously though, good luck with your system. Post back with updates when you get rolling.