Home to four of the world's largest steam engines and an ASCE National Landmark and AWWA Landmark
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Main Pumping Station Photos & Details, Cincinnati, Ohio
 
    High Pressure Service Low Pressure Service
 

Engines

Main Station
Holly Mfg. Co.
Triple expansion engines
25,828,000 G.P.D. pump
1200 HP,  153,890,000 work,
GCWW, 10-6-1906 /12-2-1952

Holly Mfg. Co. Triple Expansion steam, 25,828,000 GPD pump, 1200 HP, 153,890,000 work, GCWW 10-6-1906/12-2-1952

 3 @ 12,000,000 GPD
Head 412' to 506'		 4 @ 25,000,000 GPD,
Head 154' to 225'
  Manufacture Holly Mfg Co., Lockport, NY
  Holly history

Holly Manufacturing Company began in Lockport NY, merged with the Snow Steam Pump Works of Buffalo NY, and became part of International Steam. Later they became Worthington Pump headquartered in Buffalo and closed in 1987. source
  Type Vertical, triple expansion, crank & flywheel
  Construction 1898-1906  
  Service 10-6-1906 / 12-2-1952  
  High pressure cylinder 34" diameter 32" diameter
  Intermediate pressure cylinder 64" diameter 60" diameter
  Low pressure cylinder 98" diameter 90" diameter
  Stroke 60" 60"
  Steam pressure 160 p.s.i. 160 p.s.i.
  Surface area of 1st re-heater 165 ft2 157 ft2
  Surface area of 2nd re-heater 230 ft2 285 ft2
  Steam valve gearing Corliss & Poppet Corliss & Poppet
  R.P.M. 20 nominal 20 nominal
  Piston speed 200 feet/minute 200 feet/minute
  Horse power 1,100 Mfg 1,200
  Flywheels 2 2
  Flywheel 20' diameter, 38 ton 20' diameter, 35 ton
  Length of main shaft 12' 7 1/2" 12' 1 1/2"
  Diameter of main shaft 23 3/8" 22"
  Length of main shaft journals 32" 32"
  Diameter of main shaft journals 20" 19"
  Length of crank pin journal 11" 11"
  Diameter of crank pin journal 12 1/2" 12"
  Length of cross head pin journal 11" 11"
  Diameter cross head pin journal 12 1/2" 12"
  Weight  1,100 ton 900
  Height  57 feet  
  Base 21' 6" deep X  wide x high  
  Working decks 6 decks  
  Attached Ancillaries Attached surface condenser, air pump, feed pump, air compressor, exhaust heater
  Condenser type Surface Surface
  Condenser size 5' 11" x 13' 6' 5' 11" x 12' 6'
  Condensing surface 2,200 ft2 2,000 ft2
  Diameter of attached air pump cylinder 24" 24"
  Stroke of air pump piston 60" 60"
  Diameter of feed pump cylinder 3 1/4" 3 1/4"
  Stroke of feed pump plunger 60" 60"
  Diameter of attached air compressor cylinder 3 3/8" 3 3/8"
  Auxiliary air compressor New York Air Brake Company
  Diameter of air compressor piston two-stage, 2 1/2" and 3" single-stage, 3"
  Stroke of air compressor piston 60" 60"
  Heating surface of exhaust heater 314 ft2 314 ft2
 

Pumps

    
  Pumps/engine 3 3
  Pump type Plunger Plunger
  Pump plunger diameter 26 1/2" 38 1/4"
  Diameter of pump barrel 38" 55"
  Diameter of pump valve chamber 59" 61"
  Effective area of pump valves 824 ft2 1,440 ft2
  Diameter of valves 3 5/8" 4 3/16"
  Diameter of discharge Dual 22" Dual 30"
  Pumping capacity/engine GPD*** 12,000,000 rated
12,435,222 tested		 25,000,000 rated
25,828,539 tested
  Gallons/Revolution  428 890
  Stroke 60 inches 60 inches
  Inlet nozzle 60" 72"
  Outlet nozzle 48" 60"
  Discharge pressure 220 p.s.i. 97 p.s.i.
  Suction valves 3 5/8 inch diameter  
  Discharge valves 4 3/16 inch diameter  
 

Boilers

    
  Boilers
Geary water tube boilers
by Oil City Boiler Works
replaced with Stirling water tube boilers 1921-1923   

Six batteries of two each, Geary water tube boilers by Oil City Boiler Works. In 1921-23 the boilers were replaced with seven Stirling water tube boilers, 529 HP each and Riley forced draught stokers.
  Boiler plant HP 3,703  
  Boiler plant efficiency 74% 71.8%
  Boiler tubes 140 tubes, 3 1/2 inch diameter
  Boiler feed pumps 2- pumps from the Snow Steam Pump Company
  Feed water heater Erie City Iron Works  
  Coal feed American underfeed stokers  
  Steam pressure 160 p.s.i.g.  
  Steam moisture 1% at engine, 2% at boiler  
  Heat boosters    
  Gases leaving boiler 523°F  
  Gases leaving superheater    
  Stack temperature 235°F  
  Water evaporated per 1 lb dry coal 9.47 lb, boiler contribution 95%, economizer contribution 5% 9.23
  Feed water 82°F from water softening and deaerating plant , 124° from engine heater , 201°F from auxiliary heater , 259°F from economizer
  Work duty coal for every 100 lb of dry coal 135,000,000 ft lb rated
152,884,425 ft lb, tested		 135,000,000 ft lb rated
153,889,966 ft lb tested
  Work duty steam 173,560,148 ft lb per 1,000 lb of dry steam, weir measurement 172,650,715 ft lb
  Boiler House  
  Smokestack

Dual 8' ID, 150' high stacks of brick on circular stone base resting on a concrete foundation with a diameter of 35' and 8' deep. The stack is faced with light buff-colored radial Kittanning pressed brick and toped with a cast-iron cap.

Forced draught was provided by two 10 inch by 10 inch Buffalo Forge Co. engines each direct driving an 92 inch Buffalo Forge Co. fan.
  Coal storage building  
  Coal storage 8,400 tons allowing for an ample supply during periods of low river level.
  Coal hoppers 120, inverted pyramid (pocket type) storing 70 ton/hopper
  Coal supply Coal supply was originally received by barge
  Coal delivery Coal was elevated to a cross belt conveyor and distributed by means of shuttle belt conveyors to the 120 pocket hoppers.
  Boiler coal delivery (Coal Passers) Coal was delivered to the boilers via a wagon pulled by an electric battery driven engine called the "Dingy" about the size of a golf cart.
  Coal size Pittsburg Nut & Slack which is 1 1/2" and 3/4" respectively. 13,000 B.T.U. per pound of coal
  Coal moisture 2 1/3%  
  Ash from coal 9.45 %  
  Slate in coal .55%  
  Station Electrical Supply

Four Crocker-Wheeler 40 K.W. four-pole generators powered by two De Laval steam turbines with an operating of speed of 1,200 RPM, supplied by Dravo, Doyle & Co., Sewickley, PA. at a cost of $8,650-
  * * * GPD, Gallons Per day