1750 RPM Straight Centrifugal Pumps • Cast Iron Construction • Silicon Bronze Precision Cast Dynamically Balanced Impeller • V iton ® Silicon Carbide/Carbon Mechanical Seal • Bronze Case Wear Ring • 4˝ x 3˝ 125 Lb. 8-Bolt Flanged Suction Port & 4-Bolt Flanged Discharge Port • Pull-From-Rear Design Permits Easy Servicing Without Disturbing Piping • 1/4˝ NPT Gauge Taps on Suction & Discharge Ports For System Monitoring • Bronze Shaft Sleeve to Protect Motor Shaft • Maximum Casing Pressure 175 PSI • Maximum Temperature 200° F • Includes Seal Flush/Air Relief Valve • Front Drain Plugs • TEFC JM NEMA Frame IE2/EPAC Energy Efficient Motors
Model 4281-95
Model 4282-95
Performance of 4" × 3" Straight Centrifugal Pumps
[m] [ft.*]
140
100
A = 428 1 -95, 25 HP [18.64 B = 428 2 -95, 15 HP [11.19
W] k kW]
40
The AMT Cast Iron 1750 RPM Solids Handling End Suction Centrifugal pump delivers performance that minimizes operation and energy costs. Built to last, each pump features a precision cast bronze impeller that is dynamically balanced to minimize vibration and maximize motor bearing life. Pull-from-rear design simplifies maintenance without disturbing piping connection. Gauge taps at the suction and discharge ports allow for system monitoring. Maximum 1/4" diameter solids handling and optional seal flush/air relief valve is available for vertical installations. Pumps require a flooded suction and positive suction pressure.
90
120
35
80
A
100
30
70
B
25
60
80
50
20
60
40
15
[ft.*] [m]
40
30
0 2 4 6 8
10
20
20
5
10
NPSHr
0
0
0
0 100 200 300 400 500 600 700 800 900
[U.S. gpm] [m 3 /h]
Capacity @ 1750 RPM (60 Hz) 0 (*)Convert to psi, divide by 2.31 Liquid - Water specific gravity 1. 0 20 40 60 80 100 120 140 160 180 200
400 Spring Street • Royersford, PA 19468 USA www.amtpump.com • 888-amt-pump (268-7867) For use with nonflammable liquids compatible with pump component materials.
®
STE-23
Viton ® and Teflon ® are registered trademarks of E. I. Dupont.
A Gorman-Rupp Company
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