Liquid Handling Pumps from General Pump

High Pressure, Triplex Plunger Pump -- MK40A

High Pressure, Triplex Plunger Pump -- MK40A -- View Larger Image
High Pressure, Triplex Plunger Pump -- MK40A-Image


  • Flows from 40.7 GPM to 107.3 GPM
  • Low-high pressure packing design with integrated cooling system
  • High volumetric efficient suction/delivery valves
  • Splash lubrication
  • Gear ratios: 1500 RPM=2.65:1, 1800 RPM=3.29:1
  • Includes drain/priming valve kit
  • SAE-D hydraulic drive available (w/1500 RPM version only)
  • Nickel-plated cast iron manifold

MK Series – Specifications:
Max. Inlet Pressure: 45 PSI
Max. Fluid Temperature: *140° F
Inlet Port Thread: See specification sheet
Discharge Port Thread: See specification sheet
Shaft Diameter: 2.165";/55 mm
Stroke: 2.835";/72 mm
Pump Dimensions: 32.64";x29.38";x14.25";
Crankcase Oil Capacity: 456.5 oz./13.5 liters
Use GP Series 220 Oil

* Please consult technical manual or GP Sales Representative for Temperature/Inlet Pressure information

Product Category
Liquid Handling Pumps
Pump Type
Piston Plunger Pump; Positive Displacement Pump; Reciprocating Pump; Triplex Pump
Discharge Pressure
5800.0 psi (4078 m of Water)
Liquid Flow
40.500 GPM (153.41 L/min)
Discharge Size
1.000 inch (25.4 mm)
Media Temperature
140 F (60 C)

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Power Source
Pump Housing Material