Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 364
Fig. 4,325.—Goulds type L automatic pressure regulator and by pass. … Fig. 4,326.—Goulds type K by pass control consisting of gate valve, discharge check valve,and relief valve. ELECTRIC PUMPS 3,019 For boiler feeding, a pump is generally run continuously at afixed speed, delivering enough water to supply the maximumdemands of the boilers, while the actual quantity…
Electrical engineering
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