Multitube Once-through Boiler High-pressure Boiler (16Kg/cm2) EX (Oil fired / Gas fired) EX-500S, 750S, 1000S, 1500S, 2000S, 2500S, 3000S, 4000S(Equivalent output 500 - 4,000 kg/h)Main Features- Boiler efficiency is over 90% because of water tube with fin and economizer.- Boiler comes with a condensation warning device as standard equipment.- Soot sanitary device is highly efficient and prevents soot from scattering.- Longer boiler life with twin water-level control