Boiler model: WNS4-1.25-Y(Q)Nominal evaporation kg/h: 4000Nominal working pressure Mpa: 1.25Nominal steam temperature: 194Design efficiency %: 89Light oil kg/h: 285Heavy oil kg/h: 304City gas Nm3/h: 675Natural gas Nm3/h: 338Main steam valve seat mm: DN100Feed water tube diameter mm DN40Blowdown tube diameter mm DN50Safety valve tube diametemmr: 2-DN50Chimney diameter mm: 500Length mm: 4000Width mm: 2700Height mm: 2600