AMT 4271-95 Straight Centrifugal Pump replaced 427A-95 (25 HP, TEFC, 3 Phase, 208-230/460V, 1750 RPM, 284JM, Cast Iron, 3" Suction x 2" Discharge)

The AMT 4271-95 (replaced 427A-95) is a 25 HP, 1750 RPM straight centrifugal end-suction pump designed for commercial and industrial applications requiring dependable solids-handling performance. The pump features a cast iron casing, precision-cast dynamically balanced silicon bronze impeller, bronze case wear ring, and a Viton® / silicon carbide-carbon mechanical seal. 

The pull-from-rear design allows the pump to be serviced without disturbing the connected piping. The pump also includes 1/4" NPT gauge taps on the suction and discharge ports for system monitoring, a bronze shaft sleeve for motor-shaft protection, front drain plugs, and a seal flush/air relief valve.

The 4271-95 uses a 25 HP, 3-phase, 208-230/460 VAC, 1750 RPM TEFC motor with a 284JM NEMA frame. The pump has 3" suction and 2" discharge connections with standard 125 lb. 4-bolt flanges. It requires a flooded suction and positive suction pressure and can handle solids up to 1/4" diameter.

**Note: Stock photo is for reference only; actual product may vary.

Features:

Cast iron construction, silicon bronze precision-cast dynamically balanced impeller, Viton® / silicon carbide-carbon mechanical seal, bronze case wear ring, 3" suction x 2" discharge, 125 lb. 4-bolt flanged ports, pull-from-rear design, 1/4" NPT suction and discharge gauge taps, bronze shaft sleeve, maximum casing pressure of 175 PSI, maximum liquid temperature of 200°F, seal flush/air relief valve included, front drain plugs, 1750 RPM TEFC motor, JM NEMA frame, IE2/EPAC energy-efficient motor, maximum solids handling of 1/4" diameter.

Applications:

Industrial water transfer, commercial water systems, process water, irrigation, cooling systems, general liquid transfer, industrial circulation, water treatment, manufacturing facilities, and other applications requiring a high-performance end-suction centrifugal pump with limited solids-handling capability.

Specifications:

• Model: 4271-95
• 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: 3" Flanged
• Discharge: 2" Flanged
• Flange Rating: 125 lb.
• 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
• Shipping Weight: 510 lb.
• Suction Requirement: Flooded suction and positive suction pressure
• Maximum Solids Handling Capacity: 1/4" diameter

Dimensions have a ±1/4" tolerance; L and W may vary with motor manufacturer specifications. Three-phase motors can also operate at 50 Hz, which changes FLA, service factor and RPM.