PRINCIPLES OF NAVAL ENGINEERING 



ECONOMIZER 

 VENT. CONN. 



ECONOMIZER 

 VESTIBULE PEEPHOLE 



STATIONARY 

 SOOT BLOWER 

 CONNECTIONS 



DAMPER 



CONN. FOR AIR FLOW 

 MEASURING DEVICE 



ECONOMIZER 



VESTIBULE 



PEEPHOLE 



BLANK FLANGE 

 (CHEMICALCLEANING 



AND BOILER TEST 



CONNECTION) 



ECONOMIZER DRAIN 

 OUTLETCONN. 



MAIN FEED PIPECONN. 



CONN.FOR AIR FLOW 

 MEASURING DEVICE 



38.234 



Figure ll-12.-E3cternal fittings and connections on 1200-psi single-furnace 



boiler (economizer side view). 



286 



