Chapter 14. -PIPING, FITTINGS, AND VALVES 



ADJUSTING 

 SCREW 



MANUAL CONTROL 

 VALVE WHEEL 



47.61X 



Figure 14-27.— Automatic unloading valve. 



Other remote operating gear is installed as 

 emergency equipment. For example, the boiler 

 steam stops have remote operating gear which 

 can usually be operated from the main deck or 

 from the second deck, near the general quarters 

 station for damage control personnel of Repair 

 5 (propulsion repair). This remote operating 

 gear is frequently mechanical or pneumatic, 

 although hydraulic rem.ote operating gear is 

 used for these valves on some ships. The pneu- 

 matic and hydraulic types of remote operating 

 gear for these valves allow the valves to be 

 closed but not opened from the remote station. 



Another example of emergency remote oper- 

 ating gear is the gear that allows the quick- 

 closing fuel oil valve to be closed from a remote 

 station in the fireroom escape trunk or from the 

 deck above and near the access to the space. 

 Still other examples of emergency remote oper- 

 ating gear include gear for operating some 

 cross-connection valves, main drainage valves, 

 and main condenser injection and overboard dis- 

 charge valves. 



Remote operating gear for valves includes a 

 valve position indicator to show whether the 

 valve is open or closed. 



385 



