Steam power plant auxiliaries and accessories; (1922)
Croft, Terrell, 1880- ed, Dufflin, Daniel John, 1911- ed · New York, [etc] McGraw-Hill book company, Inc · leaf 66
DIRECT-ACTING STEAM PUMPS 45 Note.—The Hardness Of Rubber Composition Valve-Discs shouldbe adapted to the special requirements of the service for which the discsare intended. The valve-discs of vacuum pumps should be soft andpliable. Such discs are also suitable for pumps working against… … \\\\\\\\\\\>wwww\. w \\\ w\\www Fig. 45.—Water-End Of Direct-Acting Steam-Pump For Hydraulic-Pressure Service* service. For pressures from about 150 to 300 lb. per sq. in., specially-hard vulcanized rubber composition valve-discs generally suffice. Metalvalve-discs are required for pressures…
Steam power plants · Pumping machinery
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