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Powerful Flow for High-Volume Applications

JM Vertical Mixed Flow Pump

The JM Vertical Mixed Flow Pump combines high capacity with efficient performance for municipal applications requiring large volumes of water at moderate heads. Designed for long service life, the JM offers smooth, quiet operation and simplified maintenance. Its robust construction and optimized hydraulics make it ideal for stormwater handling, flood control, and water distribution systems where dependable flow matters most.

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Designed & Engineered to Meet Project Requirements

The JM Vertical Mixed Flow Pump can handle flows up to 250,000 gpm and 50 feet per stage. Every component of the JM, including shafts and bearings, can be engineered from various materials based on application requirements and operational conditions. The JM is best used for the following applications:

Water Intake for Municipal Systems

Agricultural Irrigation

Drainage

Flood Control

Stormwater Management

Pipeline Pumping for Large Infrastructure

Industrial Water Transfer & Cooling

Desalination & Water Transport Projects

What You Can Expect From the JM Mixed Flow Pump

Key Features

The JM Mixed Flow Pump is engineered with standard features that allow it to handle flow rates that are too high for conventional centrifugal pumps and when head requirements are too high for axial flow pumps to generator. Standard features include:

Mighty Power in One Small Unit

Why Our Customers Love JM

Our JM Mixed Flow Pump models are incredibly powerful, can be engineered for a variety of robust materials, and can withstand pressures up to 260 psi and temperatures up to 122°F. Customers in multiple industries rely on the JM Mixed Flow Pump due to its:

Exceptional Flow Capacity: Handles up to 250,000 gpm for large-scale operations.

Compact Footprint: Saves valuable space in your facility.

Low NPSHa

Versatile Installation: Customizable for different site conditions and pump lengths.

Energy-Efficient Operation: Low operating speeds reduce wear and extend service life.

Corrosion Protection: Multiple coating options for harsh environments.

Minimal Maintenance: Designed for trouble-free performance and easy servicing.

Use cases for JM Vertical Mixed Flow Pump

Get Product-Specific Performance Data

Technical Data

View the table below for specific information regarding our JM pump.

Pump Part	Material
Cast parts	Cast iron, Cast Steel, Ductile Iron, 316 stainless steel, duplex, super duplex and bronze
Shafts	12% chrome, 316 stainless steel duplex, super duplex and monel
Fabrications	Carbon steel, 316l, duplex and super duplex
Bearings	Bronze, duplex or super duplex backed rubber

	60 Hz
Bowl sizes	8 to 94 in.
Capacities	Up to 250,000 USgpm
Heads	up to 100 ft.
Temperatures	up to 122°F

JM Vertical Mixed Flow Pump performance range graph

A Pump Built to Your Needs

Performance-Boosting Options

You can improve the JM Mixed Flow Pump’s capabilities by configuring it with any of the following options:

Discharge head

Below-ground discharge heads are available. Each comes with a segmented elbow designed to optimize pump efficiency. The discharge nozzle can be plain-end or flanged. The motor stand is mounted above ground and is designed to support the weight and provide the maximum clearance for multiple stuffing box options.

Enclosed Lineshaft

Optional enclosed lineshaft is designed for deep well service where abrasives and contaminates are present.

Case Liner

Optional case liners are designed to improve serviceability, reducing wear related maintenance costs and operational downtime.

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Learn More About the JM Pump

Get more information about the JM pump, including performance specifications, installation guidance, and more.

Brochure

Are you interested in learning more about our JM pump? Download our brochure for additional data.

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Manual

Have you purchased the JM pump? Download our manual for comprehensive installations instructions, maintenance requirements, and troubleshooting.

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Find Your Solution

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Johnston Pump would love to support your next project! Contact us today to get started with a consultation.

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Johnston Pump, a Sulzer brand, supports critical industry applications by engineering durable, reliable, and NSF-61 and ISO 9001-compliant vertical pumps.