Universal boiler technical information - Firetube boilers: Using heavy & light oil & gas Steam capacity(kg/hr) 150 200 250 500 Output (kw) 172 172 172 403 Working pressure(kg/cm2) 7 7 7 12 Test pressure(kg/cm2) 9.5 9.5 9.5 14.5 Shell length(mm) 1000 1250 1500 2500 Shell diameter(mm) 890 890 890 1200 Smoke tubes(2an pass) 22 22 22 16 Smoke tubes(3an pass) 12 Total heating surface(m2) 3.43 4.68 5.94 13.87 Fuel consumption (kg/hr) 14.5* 14.5* 14.5* 34* Download PDF