AMT 4281-95 Straight Centrifugal Pump replaced 428A-95 (25 HP, 3 Phase, TEFC, 1750 RPM, 284JM, 208-230-460V, 4"Suction x 3" Discharge)

The AMT 4281-95 is a 25 HP, 3 Phase, TEFC, 1750 RPM straight centrifugal end-suction pump designed for commercial and industrial liquid-transfer applications. It features heavy-duty cast iron construction, a precision-cast silicon bronze dynamically balanced impeller, bronze case wear ring, and a Viton® / silicon carbide-carbon mechanical seal.

The pump's pull-from-rear design allows servicing without disturbing connected piping. 1/4" NPT gauge taps on the suction and discharge ports allow for system monitoring, while the bronze shaft sleeve protects the motor shaft.

The 4282-95 features a 4" suction and 3" discharge, both with standard 125 lb. flanges, and uses a 25 HP, 3-phase, 208-230/460 VAC, 1750 RPM TEFC motor in a 284JM NEMA frame. The pump requires flooded suction and positive suction pressure and can handle solids up to 1/4" diameter.

Features:

Cast iron construction, silicon bronze precision-cast dynamically balanced impeller, Viton® silicon carbide/carbon mechanical seal, bronze case wear ring, 4" suction x 3" discharge, 125 lb. 8-bolt flanged suction port, 4-bolt flanged discharge port, pull-from-rear design, 1/4" NPT gauge taps on suction and discharge ports, bronze shaft sleeve, maximum casing pressure 175 PSI, maximum liquid temperature 200°F, seal flush/air relief valve included, front drain plugs, 1750 RPM TEFC JM NEMA frame motor, IE2/EPAC energy-efficient motor, maximum solids handling of 1/4" diameter.

Applications:

Industrial liquid transfer, commercial water systems, process water, irrigation, cooling systems, water circulation, water treatment, industrial facilities, manufacturing, booster applications, and other applications requiring a heavy-duty 1750 RPM end-suction centrifugal pump.

Specifications:

• Model: 4281-95
• Horsepower: 25 HP
• RPM: 1750 RPM
• Phase: 3 Phase
• Voltage: 208-230/460 VAC
• Frequency: 60 Hz
• Motor Type: TEFC
• Motor Frame: 284JM
• Full Load Amps: 67/30 A
• Construction: Cast Iron
• Impeller: Silicon Bronze Precision Cast, Dynamically Balanced
• Mechanical Seal: Viton® / Silicon Carbide-Carbon
• Case Wear Ring: Bronze
• Suction: 4" Flanged
• Discharge: 3" Flanged
• Suction Flange: 125 lb., 8-Bolt
• Discharge Flange: 125 lb., 4-Bolt
• Gauge Taps: 1/4" NPT Suction and Discharge
• Shaft Sleeve: Bronze
• Maximum Casing Pressure: 175 PSI
• Maximum Liquid Temperature: 200°F
• Maximum Solids: 1/4" Diameter
• Design: Pull-From-Rear
• Seal Flush/Air Relief Valve: Included
• Drain Plugs: Front
• Suction Requirement: Flooded Suction and Positive Suction Pressure
• Shipping Weight: 705 lb.