MODEL 374B (OPTIONAL POSITION 3 SHOWN) TWO STAGE END SUCTION PUMPS WWW.AURORAPUMP.COM

TWO STAGE END SUCTION PUMPS Two Stage End Suction Pumps Capacities to 310 G.P.M. Heads to 790 Ft. Temperatures to 300°F Standard Features Reliable Operation. • Dynamically balanced cast iron shell core enclosed impellers Compact system designs, application trends requiring increased pressures and temperatures and the much higher costs of engineering and construction have brought about a demand for a practical multistage frame mounted end suction pump. Various pressures and forces generated within a multi-stage unit must balance making shaft and bearing design more critical than in single stage...

TWO STAGE END SUCTION PUMPS Dynamically Balanced Impellers keyed to the shaft and secured by a capscrew and washer. Quality controlled manufacturing process assures consistently high performance. Enclosed design provides highest efficiency, low NPSH and minimum wear for long service life. After developing pressure in the first stage impeller the liquid is directed to a second stage impeller where the process is repeated, doubling the discharge head. By offsetting the discharges by 180˚ the radial loads on the bearing are balanced and shaft deflection is minimized. Case Wearing Rings prevent wear...

TWO STAGE END SUCTION PUMPS Dimension Details DISCHARGE COUPLING GUARD STANDARD SUCTION POSITION Notes: 1. Dimensions and weights are approximate. 2. All dimensions are in inches and may vary ± 1/4". 3. Frame sizes, "C" dimension and motor weight are for open drip-proof motors only. 4. Conduit box is shown in approximate position. Dimensions are not specified as they vary with each motor manufacturer. 5. Add pump, base and motor weight for unit weight. 6. Not for construction purposes unless certified. 7. Discharge position No. 1 is furnished as standard unless otherwise specified. 8. Aurora®...

TWO STAGE END SUCTION PUMPS Range Chart Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory. 3500 RPM 75 8-1/4 DIA. & LARGER POWER SERIES 3 TOTAL DYNAMIC HEAD – FEET

TWO STAGE END SUCTION PUMPS Engineering Specifications Design Details Area Pump Shaft Ball Bearing Description Rotation from Driver End Diameter at Impeller Diameter at Shaft Sleeve Diameter between Bearings Diameter at Coupling End Coupling Key – Square Maximum Deflection at Seal Face Outside Diameter of Sleeve Bearing (Inb. Radial) Bearing (Matched Set) Conrad Angular Contact Bearing Centers Minimum B10 Bearing Life under Maximum Load Limitations Maximum Limitations Based on Standard Materials and Pumping Clear Water Speed – RPM Model 374 3600 1-1/2 x 3 x 10 60 HP 2 x 4 x 10 100 Hydrostatic...

TWO STAGE END SUCTION PUMPS Engineering Specifications Two Stage End Suction Pumps The contractor shall furnish (and install as shown on the plans) Aurora® Model (374 horizontal flexible coupled) centrifugal pump sizes 1-1/2 x 3 x 10 or 2 x 4 x 10 (iron fitted) (all iron) construction. Each pump shall have a capacity of _____ GPM at _____ ft. total head, with a temperature of _____ ˚F, _____ NPSH required and _____ specific gravity. Each pump is to be furnished with a (standard) (high temperature) mechanical seal with all metal parts to be (303) (316) stainless steel with Buna-N elastomer, (ceramic)...

Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice. A-02-1013 12/20/12 © 2012 Pentair Ltd. All Rights Reserved. 800 AIRPORT ROAD, NORTH AURORA, ILLINOIS 60542 WWW.AURORAPUMP.COM