Pacific service magazine . Ff/MAK/ Ctf^CKATOr Cross-section of two-shell 18-ft. 9-in. improved oil-gas generator Scrubbers at the Potrero gas plant the distant points. Later it was necessaryto use compressors to raise the pressure upto thirty and one hundred pounds in orderto supply the outlying sections. As theseoutlying sections grew, it was necessary toadd compressors to supply the demand. Atthe present date the plant has four steam-driven and four motor-driven compressors. Thesecompressors are of fiftyand one hundred poundpressure and have a totalcapacity of 1,545,000cubic feet per hour. T
Pacific service magazine . Ff/MAK/ Ctf^CKATOr Cross-section of two-shell 18-ft. 9-in. improved oil-gas generator Scrubbers at the Potrero gas plant the distant points. Later it was necessaryto use compressors to raise the pressure upto thirty and one hundred pounds in orderto supply the outlying sections. As theseoutlying sections grew, it was necessary toadd compressors to supply the demand. Atthe present date the plant has four steam-driven and four motor-driven compressors. Thesecompressors are of fiftyand one hundred poundpressure and have a totalcapacity of 1,545,000cubic feet per hour. Two of the steam com-pressors were placed inoperation in the month ofNovember, 1924, eachhaving a capacity of 250,-000 cubic feet per are of the Unaflowsteam engine type, thefirst to be installed on thiscoast, and are the mostmodern type for compres-sor work. In this designthe steam passes throughthe hollow cylinder headson its way to the poppet Pacific Service Magazine 83 admission valves, and after cut-offand e
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