Yes, that size is OK. Blown burners aren't nearly as complicated as venturi burners. Just gas and air and someway to control the relative amounts of each. I use a butterfly type valve on my air and a regulator on my propane tank. The burner is made out of 1 1/2" black pipe with the propane in a 1/4" copper pipe through a hole drilled in the 1 1/2". Make sure the regulator can give you enough volume. You might want to add something at the end of your burner to introduce some turbulence.