9 ▁F ury ▁all ▁used ▁the ▁Schmidt ▁system , ▁and ▁were ▁of ▁basically ▁similar ▁design . ▁The ▁New ▁York ▁Central ▁H S - 1 a ▁and ▁the ▁Canadian ▁ 8 0 0 0 ▁also ▁used ▁the ▁Schmidt ▁system ▁but ▁were ▁a ▁size ▁larger ▁altogether - ▁the ▁ 8 0 0 0 ▁we ighed ▁more ▁than ▁twice ▁the ▁F ury . ▁ ▁The ▁Schwar zk op ff - L öff ler ▁system ▁Another ▁way ▁to ▁avoid ▁scaling ▁in ▁the ▁H P ▁bo iler ▁is ▁to ▁use ▁steam ▁alone ▁to ▁transfer ▁the ▁heat ▁from ▁the ▁fire ; ▁steam ▁cannot ▁of ▁course ▁depos it ▁scale . ▁S atur ated ▁steam ▁from ▁an ▁H P ▁steam ▁generator ▁was ▁p ump ed ▁through ▁H P ▁super he ater ▁tub es ▁which ▁l ined ▁the ▁fire box . ▁There ▁it ▁was ▁super he ated ▁to ▁about ▁ ▁and ▁the ▁pressure ▁raised ▁to ▁. ▁Only ▁a ▁quarter ▁of ▁this ▁was ▁fed ▁to ▁the ▁H P ▁cyl ind ers ; ▁the ▁rest ▁was ▁returned ▁to ▁the ▁steam ▁generator ▁where ▁its ▁heat ▁ev apor ated ▁more ▁water ▁to ▁continue ▁the ▁cycle . ▁ ▁Ste am ▁circuit ▁The ▁H P ▁cyl inder ▁exhaust ▁passed ▁through ▁an ▁LP ▁feed ▁he ater , ▁and ▁then ▁the ▁tub es ▁of ▁an ▁LP ▁bo iler ; ▁this ▁was ▁roughly ▁equivalent ▁to ▁the ▁LP ▁bo iler ▁in ▁the ▁Schmidt ▁system , ▁but ▁was ▁he ated ▁by ▁H P ▁exhaust ▁steam ▁not ▁comb ust ion ▁g ases . ▁Ste am ▁was ▁raised ▁in ▁the ▁LP ▁bo iler ▁at ▁,