Natural Gas To Propane Conversion

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Hello. I got 2 Natural Gas shop heaters really cheap. I would like to put them in my shop to heat it, but we don't have Natural Gas where I live.  I was just wondering if anyone knows how to convert them to Propane. Do you just change out the NG orifices with propane ones. If so are there different kinds of propane orifices or could I use any kind that fit. Thanks for all the help I really appreciate it.
Reply:Propane supply to a residence is usually supplied at 10psi, (gaseous form) then reduced at the point of entrance into the residence to 11.5" water column. This is about .5 psi. Natural gas is supplied at 4" of water column usually. Some gas valves on the appliance are convertible, some not. Take the gas valve number from the valve itself and call a Grainger outlet as they should be able to set you up through their cataloging.SlobPurveyor of intimate unparalleled knowledge of nothing about everything.Oh yeah, also an unabashed internet "Troll" too.....
Reply:Each burner orfice is to be changed along with a spring in gas valve. I would contact furnace manufacture for their kit and tell them all info including gas valve name ,  make , and serial number. The kit will provide a variety of orifices and type will be based on Sea Level. Yes, Sea level. So, find out what sea level you are at.
Reply:Ok. Thanks. I will contact the manufacturer.
Reply:Originally Posted by BD1Each burner orfice is to be changed along with a spring in gas valve. I would contact furnace manufacture for their kit and tell them all info including gas valve name ,  make , and serial number. The kit will provide a variety of orifices and type will be based on Sea Level. Yes, Sea level. So, find out what sea level you are at.
Reply:Originally Posted by Birdhunter1I've done a few hundred Ruud furnace units, spring and orifices to swap out, takes 10 minutes or so to do (if that).