question on regulator size

strahd71

strahd71

Joined
Jan 26, 2006
Messages
784
i made one of the forced air burners on Indian Georges site.

is a 3psi - 35 psi regulator acceptable for a forced air burner?

or is something that goes lower necessary?

thanks

jake
 
That will work fine.
The posts claiming forges reaching 1500F while running at 1/2PSI gas pressure are based on an improper reading gauge, IMHO.
I run a small torch at work, and use 1/2PSI propane and 3/4PSI oxygen from the regulators. A seven pound tank of propane will run the torch for six months, or about 700 hours burn time.
However, presure is related to orifice size . A blown forge with no orifice, and 1/4" pipe, running at 2-3PSI will deliver many times more fuel to the chamber than a venturi forge with a .030 orifice running at 15PSI.
The gauges and regulators I use at work are made to read in fractional pressure. Most inexpensive regulators and gauges are not accurate below 3 # pressure. It won't matter, because you are adjusting for the right flame, and don't really care too much what the pressure is.

Stacy
 
thanks alot Stacy,

I'm glad you answered i've come to respect your opinions here on the forums

thanks

jake
 
Stacy is right,
I run about 7.5 lbs out of the regulator and pull 1 to 1.5 lbs for use in the forge. I use a blown forge and I burn 1-2 gallons of LPG an hour. There is no way that I could use that much fuel with a small orifice.
Del
 
thanks guys!

i appreciate everyones input..... some of you might find this strange but i just dont want to blow myself up! well at least not on my maiden voyage :)

thanks

jake
 
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