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FLOMAX® 40 | 4" Self Priming Pump

The FLOMAX® 40 Self-Priming Centrifugal Pump is a high-performance solution designed to meet the demanding needs of various industries, including industrial, agricultural, OEM, and marine applications. This pump is engineered to create a vacuum sufficient to lift liquids from heights up to 25 feet (7.6 m) above the source, ensuring efficient and reliable operation. Once primed, the built-in flapper valve maintains a full column of liquid in the suction line, preventing loss of prime and ensuring continuous operation.

The FLOMAX® 40 is available as a fully assembled and run-tested pump end, known as the PumPAK®, which can be easily coupled to a variety of drivers, including 215JP frame motors and gas engines. Additionally, a bearing pedestal is available for T-frame motors or belt drives, providing flexibility in installation and operation.

Constructed with durability in mind, the FLOMAX® 40 features a stainless steel drive sleeve, stainless steel fasteners, and a renewable wear plate, all contributing to its long-lasting performance. The semi-open dynamically balanced impeller ensures smooth and efficient operation, while optional double grease-lubricated seals and stainless steel impellers are available for handling abrasive and corrosive services.

This versatile pump is commonly used in a wide range of applications, such as bilge pumps, auxiliary fire pumps, ballast transfer pumps, washdown pumps, fertilizer and pesticide pumps, applicators and sprayers, blending pumps, nurse tanks, bulk transfer pumps, and more. With ABS Type Approval, the FLOMAX® 40 meets stringent standards for safety and reliability.

Features and Benefits

  • Self-Priming Capability:
    Efficiently lifts liquids from heights up to 25 feet (7.6 m), ensuring reliable operation.
  • Versatile Applications:
    Suitable for bilge pumps, auxiliary fire pumps, ballast transfer pumps, washdown pumps, fertilizer and pesticide pumps, applicators & sprayers, blending pumps, nurse tanks, bulk transfer pumps, and more.
  • Durable Construction:
    Features stainless steel drive sleeve, stainless steel fasteners, and a renewable wear plate for long-lasting performance.
  • Balanced Impeller:
    Semi-open dynamically balanced impeller for smooth operation.
  • Customizable Options:
    Available with double grease-lubricated seals, stainless steel impeller, and seals for abrasive and corrosive services.
  • High Flow Rate:
    Capable of handling up to 750 GPM (2839 LPM), making it suitable for demanding applications.
  • Powerful Motor Compatibility:
    Supports motors up to 50 HP, ensuring robust performance.

Specifications

SUCTION AND DISCHARGE4" x 4" NPT
APPLICATIONAgricultural, Industrial, Marine, OEM
MATERIALS OF CONSTRUCTIONCast iron
FLOWUp to 750 GPM (2839 LPM)
HEAD FEETUp to 225' feet (69 m)
IMPELLER7.75" max diameter – semi open
MOTORUp to 50 HP
DRIVE OPTIONSPedestal, PumPAK® (without motor)
SEALSpecial seal material combinations available (consult factory), Standard carbon / ceramic / Viton
MAX SOLID SIZE.65" (16.5 mm)
FEATURESRenewable wear plate, Stainless steel drive sleeve, Stainless steel fasteners, Up to a 25' (7.6 m) suction lift