The Water Steam Generator is a form of a low water-content boiler, similar to a flash steam boiler. The usual construction is as a spiral coil of water tube, arranged as a single, or mono tube, coil. Circulation is once-through and pumped under pressure, as a forced-circulation boiler. The generators are heat exchangers used to convert feed water into steam from heat produced in a nuclear reactor core. The Water Steam Generator is made available by us for commercial applications.