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Mega M Series Water Pumps

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Mega M-4B Series Water Pumps Are Heavy Duty

No pump, no spray. It's that simple. Mega M4-B water pumps are not off-the-shelf irrigation pumps designed to run sprinklers; they are the product of over 35 years of experience and constant improvement. The M-4B is a clockwise-rotation centrifugal pump with a 6 inch inlet, 4 inch outlet and a maximum speed of 2,400 RPM. Inlet and outlet connections are flanged to provide a solid, leak-proof mount to the tank plumbing. The heavy-duty stress-relieved cast iron frame and volute case provide solid mounting to the tank and more than 1,300 gpm flow (up to 140 psi max).

The enclosed drive motor mount reduces the potential for contamination of the coupling housing, and the threaded shaft-to-impeller connection allows for easier maintenance and increased durability under abrupt start/stop water hammering conditions. Additionally, the M-4B pump does not need to be removed from the tank for rope packing replacement, making service quick and simple. For all of these reasons and more, the M-4B is Mega’s most robust and operator-friendly water pump to date.

  • Rope-packing shaft seal
  • Corrosion-resistant stainless steel, pressure balance impeller (improves rope seal and bearing life)
  • Vented frame cavity (prevents damage from over-greasing and allows the use of an auto lubrication system)
  • Engineered high-performance drive end bearing & roller impeller bearing
  • Floating impeller-end bearing
  • SAE ‘C’ fit four bolt direct motor mount
  • Splined input shaft to splined drive motor coupling (allows for minor amounts of misalignment with reduced motor wear).
  • Threaded shaft-to-impeller connection (for ease of maintenance and increased durability under start/stop and water hammer conditions)

The M-4B pump is available in both standard cast iron, corrosion resistant and we also offer a complete stainless steel M-4 water pump.  As with all of our water pumps, the M series comes with complete parts and service manuals and Mega's product and technical support. If you have any further questions on choosing the correct Mega Water Pump please do not hesitate to call our Mega Parts Sales Team.

»Mega Water Pump Sourcebook Mega Sourcebook »M-4B Basic Dimensions M-4B_dimensions »M-4Berform Pance Curve M-4B Performance Curve »M-4B 3-D PDF M4-B_3D_file

306201buy now

MEGA M-4B Water Pump, Corrosion Resistant, CW
Part No. 306201

If corrosive water is a problem, the Mega M-4B corrosion resistant pump is the answer! The M-4B is a clockwise-rotation centrifugal pump with direct drive motor mounting to eliminate coupling alignment failures and to provide the strongest, longest-lived motor-to-pump connection.

  • Illustrated Parts Breakdown
  • Clockwise Rotation (CW)
  • Mega cast iron frame (bracket) and stainless steel packing mount.
  • 6 inch Inlet, 4 inch Outlet
  • Rope Packing Seal
  • Stress-proof carbon steel shaft

306200

 

 

 

 

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MEGA M-4B Water Pump, Standard, CW
Part No. 306200

The M-4B is a clockwise-rotation centrifugal pump with a maximum speed of 2,400 RPM.  Inlet and outlet connections are flanged to provide a solid, leak-proof mount to the tank plumbing. The heavy-duty stress-relieved cast iron frame and volute case provide solid mounting to the tank.

306647buy now

MEGA M-4 Water Pump, Complete Stainless Steel, CW
Part No. 306647

Have corrosive water? Mega's M-4 complete 100% stainless steel water pump is perfect for the most corrosive environments. The complete stainless steel Mega water pump is designed for maximum life in the most corrosive applications. Mega complete stainless steel which includes packing mount, shaft and 13 inch impeller.

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306670
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MEGA M-4B Water Pump, Mechanical Seal, CW
Part No. 306670

The Mega M-4B water pump is an open centrifugal water pump designed for use in mining and construction water spraying equipment where bad water quality, intermittent flow rates, widely varying pressures, and inconsistent incoming water supply are common.

306671buy now

MEGA M-4B Water Pump, Corrosion Resistant, Mechanical Seal, CW
Part No. 306671

Ideal for corrosive water environments, The M-4B is a clockwise-rotation centrifugal pump with direct drive motor mounting to eliminate coupling alignment failures and to provide the strongest, longest-lived motor-to-pump connection.

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