This burner will put out a lot of heat! Applications include bottom fired kettles vats driers large crab cookers etc. Our 63-5140 is a high pressure spread head burner and is often referred to as a ransome burner. Typical applications include large bottom fired kettles vats driers large commercial crab cookers and smaller industrial applications. This burner bottom mounts using the center cup through screw and the BTU consumption is based on gas pressure range utilized. At 12 PSI this burner consumes 130 000 BTU/hr. The 63-5140 comes furnished with orifice block and orifice gas connection is 3/8 male flare (Very versatile burner in that it can be used at very low pressure setting to achieve reduced heat output.)