1900 Series Multi-Stage Split Case Pumps
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FAIRBANKS NIJHUIS 1900 Series ® MULTISTAGE SPLIT CASE PUMPS www.FairbanksNijhuis.com

MULTISTAGE SPLIT CASE PUMPS Introduction The Fairbanks Nijhuis 1 900 Series two-stage pumps were designed to meet today's demanding municipal, industrial and commercial market requirements. They meet the needs of high head applications where single stage pumps will not suffice. Fairbanks Nijhuis' pumps are known for quality and reliability, and the 1 900 Series pumps are no exception. The attention to detail done during the design process can be seen in features such as the double row thrust bearings and line boring of the casing for the rotating element, increasing the life of the bearings...

MULTISTAGE SPLIT CASE PUMPS Pump Features DISCHARGE Standard Features • Bronze fitted pump construction • Bronze shaft sleeves • Dynamically balanced impellers • Bronze case wearing rings • Multivolute on 2" and larger pumps • Stainless steel impeller key • Regreaseable ball bearings • Single row ball bearing (inboard) • Double row ball bearing (outboard) • Coupling guard (Model 1920) • Mechanical seals...single unbalanced (Models 1910 and 1940) • Interwoven, graphite/Teflon lubricated acrylic yarn packing rings (Model 1920) ® • Internal bypass between casing and stuffing box (first stage)...

MULTISTAGE SPLIT CASE PUMPS Horizontal Pump Features A Split Case Design simplifies disassembly. The suction and discharge piping or alignment is not disturbed. Simply remove the upper casing for service or inspection. Cast lifting lugs are provided. Computer-machined major components with 360 degree registered fits assure concentric fit. Dynamically Balanced Impellers are keyed to shaft and secured by adjustable shaft sleeves. Opposed suction design balances out hydraulic thrust loads. Vacuum cast process and proven design provide high efficiency and performance characteristics. Bronze...

MULTISTAGE SPLIT CASE PUMPS Vertical Pump Features Less floor space required. Typically 1/2 the floor space of a comparable Horizontal Split Case. B Inline piping arrangement allows piping in any direction. Elevated motor protects against potential flooding if the pump station is in a low area. Key Features Features described for the horizontal pumps are also found in the vertical pumps. A. Coupling Alignment with true alignment is vital to long life and proper performance. To maintain proper coupling alignment the mounting bracket is rabbet fitted to the motor. Mechanical Seals C. EXTERNAL...

MULTISTAGE SPLIT CASE PUMPS Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory. Power Frame No. 2 Power Frame No. 4A Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory. Power Frame No. 2 Power Frame No. 3 Power Frame No. 4 Power Frame No. 5

MULTISTAGE SPLIT CASE PUMPS Range Charts 3000 RPM Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory. Power Frame No. 2 Power Frame No. 4A CUBIC METERS PER HOUR 1500 RPM Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory. Power Frame No. 2 Power Frame No. 3 Power Frame No. 4 Power Frame No. 5 CUBIC METERS PER HOUR

MULTISTAGE SPLIT CASE PUMPS MODEL 1920 - RIGHT-HAND ROTATION

MULTISTAGE SPLIT CASE PUMPS Power Series

MULTISTAGE SPLIT CASE PUMPS Engineering Specifications Models 1920, 1910 and 1940 Horizontal Split Case Furnish and install as shown on the plans…right-hand (left-hand) Fairbanks Nijhuis model (horizontal-1920) (vertical-1910 open shaft) (vertical-1940 flexible coupled) type split case, opposed suction, multistage centrifugal pump, Size ____ x ____ x ____ of bronze fitted (all bronze) (all iron) (stainless steel) construction. The pump shall be capable of delivering at design conditions a capacity of ____ GPM when operating against a total dynamic Head of ____ feet, with a temperature of...

MULTISTAGE SPLIT CASE PUMPS Engineering Specifications Model 1920 Stuffing boxes shall be placed on both sides of the pump centerline to seal the pump shaft. All packed pumps having a suction lift have a first-stage lantern ring connected to the pressure side of the pump by a cored passage in the parting flange of the pump. The stuffing boxes shall be equipped with heavy, cast, split glands with extra length for easy removal for packing inspection and maintenance. Pump and motor shall be mounted on a common heavy baseplate of (steel drip rim) (formed steel) (structural steel). Pump and...

3601 FAIRBANKS AVENUE, KANSAS CITY, KANSAS 66106 www.FairbanksNijhuis.com Monel ® is a registered trademark of Special Metals Corporation. Teflon ® is a registered trademark of E. I. du Pont de Nemours and Company. Fairbanks Nijhuis is a registered trademark of Pentair Ltd. Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice. FM-02-1521 06/24/13 © 2013 Pentair Ltd. All Rights Reserved.