Why VAL6? Diesel fueled infrared VAL6 heaters are used for curing cement, drying brick, block, concrete and other masonry veneers in the construction industry. The VAL6 radiant heater has a portable design perfect for dry wall and flooring applications. Smokeless diesel fueled radiant space heaters are ideal in the aviation industry for warming in hangars and thawing on runways. And using biodiesel, diesel or kerosene these green heaters are used on farms in-and-out of the barn especially during calving season. Indirect gas and propane industrial heaters cost 5 times more to purchase and twice as much to operate.