The Magnum Series(r) of cordless, commercial gas water heaters fromBradford White Corporation(Ambler, PA) features the company's Millivolt technology, that enables these units to generate their own energy from the pilot and thermopile assembly to operate the flue damper. This eliminates the need for an external electric source. Available in size ranges from 38 to 100 gal, standard features include Hydrojet(r) sediment reduction, a Vitraglas(r)-lined tank to protect the heater against the corrosive effects of hot water, an installed T&P relief valve, a brass drain valve, and non CFC insulation.