I am replacing my 38 year old kitchen cooking stove and before I take it to the scrape yard I have salvaged the burners and the gas control valves. The burners have excellant venturies and the valves are all brass with standard thread connections. These particular valve assemblies have adjustable orifices the newer ones have changable orifices. To convert these from natural gas to LPG I will have to adjust them to one forth the flow rate.
Purchased new the valve and orifice is about 35 dollars. Discarded BBQ grills are also a source for these parts and those are already LPG ready but the orifice may be too large in which case you can solder it closed and redrill it.
Parts for gas controls.
Parts for gas controls.
Ross- tightwad home cook