DIVISION VALVE 



operating the hand wheel of the main valve on the 

 top of the boiler, but it also provides means for clos- 

 ing off the entire battery in case of emergency. 



The small quantity of steam that is bled through 



these emergency valves 

 when used as described 

 is conveyed to a brass 

 manifold, highly polished, 

 immediately beneath the 

 gauge board, and from 

 thence is carried off be- 

 neath the floors. The 

 whole arrangement is neat 

 and compact and presents 

 a very pleasing appear- 

 ance as one enters the 

 Chief Engineer's office. 

 It not only insures auto- 

 matic control of each or 

 all of the boilers, but also 

 manual control without 

 the necessity of access to 

 the top of the boilers. 

 On the 12-inch main steam lines, midway on 

 each side, are located two 12-inch Foster Special 

 Division Valves, steam actuated. 



In the event of a rupture in 

 any of the steam lines, and after 

 the automatic cutting out of the boilers, as pre- 

 viously described, the broken section of the main 

 line can be isolated by the opening of a fourway 

 cock, controlled by a chain (by which steam is ad- 

 mitted to the closing piston), closing off these Divi- 

 sion Valves and permitting steam to be thrown on 

 the opposite side of the header and the building, 

 thus allowing the operation of the various units not 

 affected by the rupture, without hindrance or with- 

 out loss of service during the time required to make 

 repairs to the broken side. 



These valves are especially efficient in that they 

 insure against the complete closing for any length 

 of time of the entire plant in the event of an accident 

 to either side of the header. They are heavy and 

 substantial looking and sensitive in their operation. 



On the Balanced Draft Equipment to the boilers, 

 controlling the engine feeding the blower, is con- 

 nected a Foster Automatic Fan Engine Regulating 

 Valve, operating within a variation of a pound and 

 a half. A drop in the boiler pres- 

 sure automatically opens this valve, 

 feeds steam to the engine and ac- 

 celerates the speed of the blower. 

 When steam reaches the adjusted boiler pressure, 

 the valve automatically stops the fan engine. It is 

 likewise provided with a limit screw for controlling 



SPECIAL DIVI 

 SIGN VALVES 



FAN ENGINE 

 REGULATING 

 VALVE 



FftP HFATINf 



the speed of the fan engine and has a by-pass arrange- 

 ment by which the engine can be kept creeping with- 

 out load when the boiler pressure is at its normal 

 height. 



On the heating system the Foster Engineering 

 Company's special regulating valve is installed, re- 

 SPFCIAI VAI VFS ducing boiler pressure to the re- 

 quired heating pressure for the 

 building. 



On the 20-inch automatic ex- 

 haust line from the heating lines is mounted a 20- 

 inch Foster Back-Pressure Valve, of unique design 

 and construction, without outside dash pots, levers, 

 or weights, maintaining a constant back pressure 

 on the heating system and automatically opening to 

 the atmosphere when steam is reached beyond the 

 adjusted amount. 



The high- and low-duty water pumps are fitted 

 with a Foster Special Class G Auxiliary Operated 

 PUMP fOVFPN- I* uru P Governor (see illustration), 

 IMP VAI VFQ ^ or con t ro lli n g the water discharge, 

 maintaining a constant pressure and 

 preventing the pump from racing. These governors 

 work within a very close regulation and are of an 

 attractive design. They are all composition, fitted 

 with small phosphor bronze diaphragms. 



The plant is also fitted with Foster regulating and 

 reducing valves on the line to the hot-water tanks, 

 MKfFI I ANF on ^ ne nea ting line to the oil tanks, 

 VAI VFC ano - on ^ ne a " u ' ne ^ ^ ne sterilizers 

 of the barber shop and chiropodist 

 and manicuring parlors. These valves are all of the 

 Special Class G construction, single seated, auxiliary 

 operated, regulating within a close 

 degree; a special valve of a simi- 

 lar construction is likewise placed 

 on the air lines operating the 

 handsomely finished bronze gates 

 of each elevator on each floor, re- 

 ducing 100 pounds to 50 pounds 

 air required to control these 

 gates. All the devices of the 

 Foster Engineering Company are 

 of the latest design and construc- 

 tion and are especially adapted 

 to the work for which they are 

 intended. 



To those interested in the 

 problem of reducing and regu- 

 lating steam or air for work of 

 this nature, the Foster installa- 

 tion in the Singer Building is well 

 worthy a visit, and to a practical engineer, who is 

 thrown in contact with devices of this nature, they 

 furnish an interesting study. 



PUMP GOVERNOR 



[97] 



