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The MILROYAL Series combines proven mechanical reliability, modular configuration flexibility, and multiple liquid-end technologies to deliver accurate chemical dosing across a wide range of industrial processes. Available in B, C, and D frame sizes, MILROYAL pumps support applications ranging from water treatment and chemical processing to oil & gas and hydrocarbon production.

Explore Milroyal Pumps Portfolio

Browse the range below to identify the configuration that matches your application, whether your priority is high-pressure dosing, chemical compatibility, flow stability or operational reliability in demanding industrial environments.

Why Choose MILROYAL Series?

Up to 2,080 GPH

Available in frame sizes B, C, and D with capacities ranging from precise low-flow dosing to large-scale chemical injection applications.

±1% Dosing Accuracy

 Provides repeatable dosing accuracy over a 10:1 turndown ratio to support precise process control and consistent chemical injection.

Up to 10,000 PSI (689 bar)

Packed plunger configurations are designed for demanding high-pressure injection services in oil & gas, chemical processing, and industrial applications.

Three Liquid-End Technologies

Available with High Performance Diaphragm (HPD), Disc Diaphragm, and Packed Plunger liquid ends to meet a wide range of process requirements.

Multiplex Configurations Available

Configure up to 6 pumps on MILROYAL C and D models or up to 8 pumps on MILROYAL B models for increased capacity and operational flexibility.

Built for Continuous Industrial Service

The proven polar crank drive design operates with all moving parts submerged in oil, delivering long-term reliability in critical chemical injection applications.

Built Around a Proven Mechanical Platform

At the core of every MILROYAL pump is a rugged polar crank drive with all moving components operating in an oil bath. This design provides smooth power transmission, minimizes wear, and supports the long-term reliability required for continuous industrial service. Unlike pumps designed for a narrow operating range, the MILROYAL platform is built to adapt to changing process requirements and challenging operating environments.
MR Product Photo Exterior milroyal d

One Platform, Multiple Pump Technologies

High Performance Diaphragm (HPD)

Hydraulically actuated diaphragm technology provides accurate dosing, broad chemical compatibility, and additional containment when handling corrosive, hazardous, or environmentally sensitive fluids. Double diaphragm and rupture detection options are also available.

Disc Diaphragm

Disc diaphragm liquid ends provide a robust solution for applications requiring diaphragm technology with high-pressure performance and proven industrial reliability.

Packed Plunger

For demanding high-pressure services, viscous fluids, slurry applications, and challenging suction conditions, packed plunger liquid ends can achieve operating pressures up to 10,000 PSI (689 bar). 

 

The MILROYAL Series supports three liquid-end technologies on a common drive platform, allowing users to select the most appropriate pumping technology without changing to an entirely different pump family.

Not Sure Which Model Fits Your Application?

 

Model

Max Flow Rate

Max Pressure

Best For

MILROYAL D

53 GPH (200 L/h)

3,000 PSI (207 bar)

Compact industrial dosing and chemical injection applications

MILROYAL B

626 GPH (2,370 L/h)

10,000 PSI (689 bar)

Medium-capacity applications requiring high-pressure performance

MILROYAL C

2,080 GPH (7,873 L/h)

10,000 PSI (689 bar)

Large-capacity industrial dosing and critical process injection systems

 

Need Help Selecting Right Pump?

Flow rate, pressure, fluid properties and application requirements all play a role in pump selection. Our team can help identify the best-fit model and configuration for your process.

Start With Your Application

Select your industry to explore common applications and recommended metering pump solutions

FAQ

MILROYAL pumps are commonly used in oil & gas, hydrocarbon processing, chemical manufacturing, petrochemical processing, water treatment, wastewater treatment, and general industrial chemical injection systems.

How Can We Help You?

Work with Milton Roy experts to identify the right solution for your application, operating conditions and performance requirements