Preheat-Postheat-Stress Relief, Ease of Installation, Complete safety to personnel and equipment, Dependable, closely controlled heating with all the economies of the electrical resistance method,Adaptability to jobs of any size or configuration, Heating of sections of any thickness from 1/2 inch to 7 inches, Long service life and complete re-usability, Total application engineering service, Controller Output Rated 48 KW at 460 Volts, Each Quad output Controller can run 4 Power Streamers for a total of 24 heaters