Suction Single-Stage Pumps

Figure 3-5. External view double suction single-stage pump. (Courtesy Allis-Chalmers Mfg. Co.)...

Double-Suction Single-Stage Pumps These pumps are used for general water-supply and circulating service and for chemical service when liquids that are noncorrosive to iron or bronze are being handled. They are available for capacities from about 5.7 mVh (25 gal/min) up to as high as 1.136 x lO" mVh (50,000 gal/min) and heads up to 304 m (1000 ft). Such units are available in iron, bronze, and iron with bronze fittings. Other materials increase the cost when they are required, a standard chemical pump is usually more economical. 

Figure 3-50. Typical centrifugal pump characteristic curve vrith auxiliary specific speed curve. Double-suction, single-stage, 6-in. pump, operating at 1760 rpm constant speed. (By permission, Karassik, I. and Carter, B., Centrifugal Pumps, McGraw-Hill Book Co., inc., 1360, p. 197.)...

Figure 44.21 Typical end-suction, single-stage centrifugal pump...

Primary pump Single suction, single stage... 

Fig. 8. Single-stage between-bearings double-suction pumps (a) axially split design and (b) radially split design.

This specification covers horizontal, end suction, vertically split, single-stage centrifugal pumps with top centerline discharge and hack pullout feature. 

Figure 3-65 gives the upper limits of specific speeds of single-stage, single and double-suction centrifugal pumps handling clear water at 85°F at sea level [22]. 

Figure 8.45. Single-stage, single-action liquid ring gas pump 1, shaft 2, impeller 3, casing 4, guide plate 5, suction port 6. discharge port 7, liquid ring...

Close-Coupled Integrated Two-Stage Liquefaction (CC-ITSL), 6 843 Close-coupled single-stage horizontal end suction pump, 22 63-64 Close-coupled vertical centrifugal pump designs, 22 64... 

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