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The AMT line of Diaphragm pumps features a 2-stage, heavy duty forged gear driven transmission. Often referred to as Mud or Sludge Pumps, diaphragm pumps are designed to pump mud, slurry, sewage and thick liquids that have the ability to flow. AMT Diaphragm pumps are available with a choice of drivers to meet your application requirements: gasoline, diesel or single or three phase electric motor. Built-in check valve assures self-priming to 20 feet after initial prime. Heavy duty forged gear driven transmission is designed to operate pump at 40 strokes per minute for electric motor models and 60 strokes per minute for engine driven models. Each unit includes a 2” or 3” NPT steel suction strainer, two NPT nipples and a wheel kit for portability. Models 338E K6, 338G-K6, 337H-K6 and 337E-K6 are kits provided less motor or engine. Suction and discharge port sizes cannot be reduced.


  • Sand Cast Aluminum Construction for Portability and Durability
  • Thermoplastic Santoprene Diaphragm
  • 2"" or 3"" NPT Suction and Discharge Ports
  • Self-Priming to 25 Ft. Lift
  • Maximum Solids Handling up to 1-5/8""
  • Modular Component Design Permits Easy Maintenance and Cleanout
  • Driver Options: Gasoline, Diesel or Electric Single & Three Phase Motors
  • Delivers up to 90 GPM
  • 90° Rotatable Base on All Models

Replaces Old Model 335 and 336 Series Pumps. Contact us for additional information.

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Unit of Measure
Items
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1.5 HP Electric Motor 3" NPT Self-Priming Diaphragm Pump
Unit Price $2,533.50
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1.5 HP 3" NPT Self-Priming Diaphragm Pump Kit, Less Motor
Unit Price $2,266.50
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4 HP Gasoline Engine 3" NPT Self-Priming Diaphragm Pump
Unit Price $2,437.50
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5 HP Gasoline Engine 3" NPT Self-Priming Diaphragm Pump
Unit Price $2,484.00
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4 HP 3" NPT Self-Priming Diaphragm Pump Kit, Less Motor
Unit Price $2,133.00
Manufacturer N/A American Machine and Tool Company
Model # N/A
Curve N/A
Driver N/A 56C 115 VAC 60 HZ Electric Motor N/A 56C Kit, Less Motor N/A Honda GX120 .75 Kyd Gasoline Engine N/A Honda GX160 .75 Kyd Gasoline Engine N/A .75 Kyd Kit, Less Motor
Inlet Size
N/A 3" FNPT
Porting Position
N/A 3" FNPT
Power N/A 1.5 hp N/A 1.5 hp N/A 4 hp N/A 5 hp N/A 4 hp
Note N/A
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