Primeroyal metering pumps are designed to deliver precise, repeatable chemical dosing under the most demanding industrial conditions, where process integrity and uptime are critical. Built on decades of field-proven experience, the series combines robust mechanical architecture, advanced drive technology, and modular configurability to ensure long-term operational stability.
The platform is specifically engineered to support continuous duty cycles with extended intervals between maintenance, enabling operators to maintain stable process conditions while minimizing lifecycle costs.
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.
The PRIMEROYAL platform supports pressures up to 1,034 bar, capacities exceeding 32,000 L/h, multiple liquid-end technologies, and a wide range of material options, allowing pumps to be configured for highly specialized applications.
Designed for chemical injection and dosing processes where uptime, accuracy, and reliability are essential for safe operation and process performance.
Users can select the most appropriate liquid-end technology based on pressure requirements, fluid characteristics, NPSH conditions, and containment needs.
With decades of field experience and continuous design evolution, PRIMEROYAL pumps are used across some of the world's most demanding applications.
At the core of the PRIMEROYAL design is a heavy-duty gear mechanism coupled with a variable eccentric drive, forming a mechanically deterministic system capable of transmitting motion with high precision and minimal losses.
Unlike conventional dosing systems that rely on spring-assisted return mechanisms or partial stroke engagement, the PRIMEROYAL drive ensures that the full stroke cycle is actively powered. This design eliminates the discontinuities typically associated with lost-motion architectures and significantly reduces both mechanical and hydraulic shock throughout operation.
The result is a highly stable metering profile with excellent repeatability under steady-state conditions, making the technology particularly suited to applications where dosing consistency directly impacts process performance.
Compare flow capacity, pressure capability and liquid-end technologies across the PRIMEROYAL portfolio to identify the best fit for your application.
Model | Max Flow Rate | Max Pressure | Best For |
|---|---|---|---|
PH | 250 GPH (948 L/h) | 7,251 PSI (500 bar) | High-pressure hydraulic diaphragm dosing |
PK | 544 GPH (2,062 L/h) | 4,351 PSI (300 bar) | Versatile industrial process dosing |
PKG | 660 GPH (2,500 L/h) | 536 PSI (37 bar) | High-capacity GSD diaphragm applications |
PL | 1,164 GPH (4,410 L/h) | 4,148 PSI (286 bar) | Broader flow range with high-pressure capability |
PLG | 871 GPH (3,300 L/h) | 652 PSI (45 bar) | Compact GSD diaphragm technology |
PN | 2,605 GPH (9,863 L/h) | 3,539 PSI (244 bar) | High-flow process dosing |
PQ | 2,287 GPH (8,657 L/h) | 4,046 PSI (279 bar) | Large-capacity critical process applications |
PR | 4,136 GPH (15,659 L/h) | 4,626 PSI (319 bar) | Multiplex and large-scale process systems |
PX | 4,356 GPH (16,490 L/h) | 3,654 PSI (252 bar) | High-volume industrial applications |
PX FT | 8,712 GPH (32,980 L/h) | 3,654 PSI (252 bar) | Highest-capacity model in the PRIMEROYAL family |
PX FT Metallic Diaphragm | 1,062 GPH (4,022 L/h) | 14,924 PSI (1,029 bar) | Extreme-pressure applications |
PX FT Packed Plunger | 669 GPH (2,536 L/h) | 14,213 PSI (980 bar) | High-pressure chemical injection services |
Primeroyal pumps integrate variable stroke adjustment via eccentric geometry, allowing accurate modulation of flow rate without compromising metering stability. This approach provides a direct and predictable relationship between mechanical input and volumetric output, ensuring consistent dosing even under fluctuating operating conditions.
The absence of uncontrolled motion within the transmission chain enhances control resolution and operational predictability, while maintaining compliance with industry standards for accuracy and repeatability in metering applications
Pimeroyal pumps are engineered for deployment in environments characterized by high pressure, aggressive chemicals, and extreme temperatures. The design complies with API 675 standards and has been validated through extensive field use, including offshore installations and low-temperature applications.
Diaphragm liquid-end configurations are designed to provide leakproof operation with service life exceeding 20,000 hours, contributing to both process safety and reduced maintenance frequency. The system is capable of handling a broad spectrum of fluids, from corrosive acids and bases to viscous media and slurries, without compromising reliability.
The Primeroyal platform is inherently modular, enabling precise alignment between pump configuration and process requirements. Rather than imposing a fixed design, the system supports multiple liquid-end technologies, materials, and control strategies, allowing it to be engineered as part of a fully integrated dosing solution.
This modularity extends to multiplex configurations, where pumps can be combined to achieve higher flow rates or redundancy, as well as to capacity control options that can be implemented either manually or through automated systems. The ability to adjust flow while the pump is running further reinforces its suitability for dynamic industrial environments.
Select your industry to explore common applications and recommended metering pump solutions
Accurately dose coagulants, flocculants, and treatment chemicals to improve solids removal, water clarification, and overall treatment efficiency in municipal and industrial water systems.
Ensure safe, high-quality water through accurate chemical dosing for disinfection, de-chlorination, fluoridation, taste and odor control, iron and manganese removal, and other critical treatment processes designed to meet water quality and regulatory requirements.
Optimize water chemistry, protect treatment assets, and improve overall system performance with precise dosing solutions for pH control, desalination, membrane pretreatment, hardness control, corrosion inhibition, and water conditioning applications.
Improve process efficiency with precise chemical dosing for ore recovery, reagent addition, flotation, leaching and other critical mineral processing applications.
Enable emerging energy transition projects with accurate chemical dosing for lithium recovery, battery metal processing, and direct lithium extraction applications.
Support water reuse, wastewater treatment, and tailings operations with reliable dosing solutions that help manage water quality and environmental requirements.
Enable reliable upstream, midstream, and downstream operations with precise chemical injection for corrosion inhibition, hydrate prevention, scale control, and produced water treatment.
Protect boilers, cooling systems and utility water processes with accurate dosing solutions that improve reliability and operational efficiency.
Support refining and petrochemical operations with precise dosing of catalysts, additives, and process chemicals across critical production processes.
Support emerging circular economy applications with accurate dosing solutions for chemical recycling, feedstock recovery, pyrolysis processes and sustainable manufacturing technologies.
Maintain safe and reliable operation with precise injection of catalysts, reactants, and specialty chemicals in high-pressure and process-critical chemical manufacturing applications.
Improve product quality and process consistency through precise dosing of catalysts, co-catalysts, additives and process chemicals used in polymer and plastics production.
The PRIMEROYAL Series is designed for the most demanding chemical dosing and injection applications, offering the broadest range of flow rates, pressures, liquid-end technologies, and configuration options within the Milton Roy metering pump portfolio. The series supports hydraulic diaphragm, metallic diaphragm, and packed plunger technologies in a single modular platform.
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