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          a | 
          BORDVENTIL SCHIFFSHEIZDAMPF | 
          
        
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            | 
          Hull valve, ship's steam heating | 
          
        
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            | 
            | 
          
        
          |   | 
          a1 | 
          BORDVENTIL SCHIFFSHEIZKONDENSAT | 
          
        
          |   | 
            | 
          Hull valve, condensate return from radiators | 
          
        
          |   | 
            | 
            | 
          
        
          |   | 
          b | 
          SCHIFFSHEIZDAMPF DRUCKMINDERVENTIL 18>3 ATÜ | 
          
        
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            | 
          Steam heat reducing valve, 18>3 atü | 
          
        
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            | 
            | 
          
        
          |   | 
          c | 
          SICHERHEITSVENTIL SCHIFFSHEIZDAMPFLEITUNG | 
          
        
          |   | 
            | 
          Relief valve, steam heat line | 
          
        
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            | 
            | 
        
        
          |   | 
          d | 
          ENTWÄSSERN WASSERABSCHEIDER. . . zB  SCHIFFSHEIZKONDENSATLEITUNG | 
          
        
          |   | 
            | 
          Drain valve from water separator. . . for example, in the condensate line | 
          
        
          |   | 
            | 
            | 
          
        
          |   | 
          e | 
          HEIZDAMPF. . . zB VORDERE ZENTRALE | 
          
        
          |   | 
            | 
          Radiator valve. . . for example, control room, forward | 
          
        
          |   | 
            | 
            | 
          
        
          |   | 
          f | 
          HEIZKONDENSAT. . . zB STEUERBORD VORN BUGTORPEDORAUM | 
          
        
          |   | 
            | 
          Condensate (exit from radiator). . . for example, bow torpedo room starboard forward | 
          
        
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