The "THERMOTECH" uni steam generating system essentially comprises of a fully automatic reverse flame package type steam generator, which consists of membrane type helical coil integral combustion chamber accommodated in S.S. and insulated shell. The hot fuel outlet is connected to smoke tube preheater to preheat feed water. The feed water pump, blower, fan, fuel pump are mounted on common base frame. The steam generators are suitable to generate dry saturated steam from 200 kg/hr. to 800 kg/hr. at 15 kg/cm² maximum pressure.