. Handbook of construction plant, its cost and efficiency. ng^Arrangemenl i Crank & flywheelL Compensator i ,,!,-,, / Direct-actingk Hydraulic [ Crank and Arrangement {SrS£tal t-=0 i Surface (suction)Rotary [use [ Submerged or deep well Air-displacement f ScrewSteam-vacuum j ChainContinuous-flow *S U pump ^Double-acting Impeller Continuous applica-tion through somemechanical agencyor medium f Impeller {gf-^ , r>o^ (Side suctionCentrifugal J Case {DouDie suction Arrangement HorizontalVertical f WaterJet -! Steam[Air Impulse (as name implies)—Water-ram {WheelBand 512 HANDBOOK
. Handbook of construction plant, its cost and efficiency. ng^Arrangemenl i Crank & flywheelL Compensator i ,,!,-,, / Direct-actingk Hydraulic [ Crank and Arrangement {SrS£tal t-=0 i Surface (suction)Rotary [use [ Submerged or deep well Air-displacement f ScrewSteam-vacuum j ChainContinuous-flow *S U pump ^Double-acting Impeller Continuous applica-tion through somemechanical agencyor medium f Impeller {gf-^ , r>o^ (Side suctionCentrifugal J Case {DouDie suction Arrangement HorizontalVertical f WaterJet -! Steam[Air Impulse (as name implies)—Water-ram {WheelBand 512 HANDBOOK OF CONSTRUCTION PLANT CENTRIFUGAL PUMPS. The centrifugal pump (Figs. 233-236) has been developed andperfected during the past seven years, so that it is now recog-nized as a simple, reliable pump of great range. The principal trouble with a centrifugal pump, especiallywhen the pump is at a substantial height above the water, is instarting it. When the pump sucks it must be reprimed andstarted again. Therefore, if the amount of water to be handled. Fig. 233. Submerged Type. is not as great as the minimum capacity there will be manystops and knock-offs to prime. Before a steam pump,especially in cold weather, it should be well warmed up by livesteam from the end of a hose in order to thaw out any ice thatmay have formed in the cylinders and to give the iron parts achance to expand gradually. Iron Vertical Centrifugal Pumps, submerged or suction type,furnished complete with short shaft and coupling, one bearing,pulley for connecting shaft and discharge elbow, are used exten-sively for irrigation purposes, sewage pumping, and for anyplace where a pump may be placed in a pit. Suitable for ele-vating water 50 to 60 feet.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuilding, bookyear191
