Check the listing for details. Propane Gas Forge Burner Metal Melting Furnace,Raku Kiln Blacksmith Knife Making. Condition: New. Listed at 35.00 USD. Gas Burner for Gas Forges and Metal Melting Furnaces, Efficient and Economical It is 100,000 BTU. Powerful and efficient. The knob valve is better than other ball valve, it can adjust the flame precisely(see the photo of my flame). There is a air choke on the top of our burner – it regulates the amount of air that is mixed with the propane during combustion,so you can get different quantity of air on different pressure. Our burners are work with high pressure : Butane, Propane, Butane + Propane Gas, LPG. But it don't work on Natural Gas. You need to buy a gas hose with inner diameter 10mm , and a high pressure gas regulator. * Orders Shipping within 1 or 2 day with tracking number . Pick up or Cash is not allowed. * 30 days for an exchange,return or refund . * We have 3 warehouse in East,Central and West of USA. We will ship it from the warehouse nearest to you. so you can receive it in 2--5 days.