For over 50 years, Electro-Steam Generator Corp. has been providing high quality electric steam generators, made in America in accordance with UL electrical and ASME boiler code standards. Electro-Steam is a leader in providing steam systems to the food and beverage, medical, industrial and healthcare industries. All-electric steam generators/cleaners. 3.3 to 720kw (0.33 to 72 boiler horse power). Available in 220v, 1-phase; 208v, 3-phase; 230-240v, 3-phase; 460-480v, 3-phase.