Electra - Electrode Type Boilers Operating Principle:- Electra differs in theory from the other methodology of heating water or manufacturing steam because the water inside the shell is employed as an resistance through that this is passed. This causes an increase in the temperature of the water . Construction:- Electra steam boilers are factory-made as a pre-packaged unit mounted and a chassis, installation contains the fitting of the pipe, cold feed, blowdown, drain, valve, air vent pipe and also the affiliation of the electrical supply . The current supply consists of specially designed electrodes within the variety of scrolls so as to maximize the electrodes space . Automatic controls for prime steam pressure and high & low water level within the boiler shell are provided through a completely pre-wired instrument panel ther...