Method: When saturated condensate at a higher pressure is reduced to a lower pressure, part of the liquid flashes into steam. Flash fraction is estimated from: Flash Fraction = (h_f1 − h_f2) ÷ h_fg2 where: h_f1 = saturated-liquid enthalpy at the upstream pressure h_f2 = saturated-liquid enthalpy at the flash pressure h_fg2 = latent heat of vaporization at the flash pressure Flash steam flow is: Flash Steam = Condensate Flow × Flash Fraction Remaining liquid condensate is: Remaining Condensate = Condensate Flow − Flash Steam Saturated-water properties are obtained from an embedded steam-property table and linearly interpolated between pressure points. Pressure is converted internally to bar absolute. For gauge pressure, standard atmospheric pressure of approximately 1.01325 bar is added. This calculator assumes the incoming condensate is saturated liquid at the upstream pressure and that throttling occurs approximately at constant enthalpy. Subcooled condensate will produce less flash steam than calculated here. Detailed process design should use verified steam-table or thermodynamic-property data at the actual operating conditions.