* 74 MODERN STEAM PRACTICE . … Fig . 107 . — Condenser and Air Pump , with Foot - valve Seating . a , Condenser . b , Air pump . C , Foot - valve ehest . Fig . 108 . — Air Pump and Condenser without Foot Valve contained in a cast - iron Tank . a , Condenser . b , Air pump , c , Tank .
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