R.D. Webb Co. The Red Devil™ is a high vacuum/inert gas furnace designed for research laboratories. According to the company, both installation and operation are simple and inexpensive. No cooling water or drain is required, and a single wall outlet provides sufficient electrical power to operate the furnace at full temperature. There are no water cooling channels to clog, no chamber corrosion from galvanic action and no water leaks to degrade vacuum quality. The furnace offers a work zone of 3.5 x 2 in. and maximum temperatures of 2200°C in an argon atmosphere and 2000°C in a vacuum atmosphere.