PRIMEROYAL
The Power to Perform
Engineered for the most demanding chemical dosing applications, PRIMEROYAL metering pumps combine unmatched durability, precision, and modular flexibility to deliver superior performance and reliability.
Why Choose Us?
With more than 85 years of pump engineering excellence, Milton Roy’s PRIMEROYAL™ series stands as a symbol of trust, performance, and innovation in metering technology. Built to meet API 675 standards and capable of handling extreme pressures, temperatures, and fluid complexities, these pumps deliver consistent, accurate dosing in critical applications. Whether you're treating industrial wastewater, injecting chemicals in oil and gas fields, or managing high-pressure dosing in refineries, PRIMEROYAL pumps provide unmatched reliability backed by a global network of support.
Primeroyal
Precision Engineered for Critical Chemical Dosing
The PRIMEROYAL Series metering pumps are high-precision, hydraulically actuated diaphragm and plunger pumps designed for critical chemical dosing in the harshest industrial conditions. Their modular design allows for flexible configurations across multiple applications while delivering long service life and exceptional performance at high pressures and low flow rates.
Modular design with seven frame sizes for wide flow and pressure ranges
Multiple liquid-end types: packed plunger, metallic double diaphragm, PTFE double diaphragm
Operates at flow rates up to 8,712 gph (32.98 m³/h) and pressures up to 15,000 psi (1,034 bar)
Built to API 675 standards for performance and reliability
±1% dosing accuracy, even at high pressure or low flow
Explosion-proof options and wide temperature tolerance: from -40°F to 600°F
Compact footprint with variable eccentric drive for low maintenance
Optional features include electronic capacity control, diaphragm rupture detection, remote head, and special check valves
Flow rate: from 0.05 to 8,712 gph (0.2 to 32,980 l/h), simplex configuration
Pressure: up to 15,000 psi (1,034 bar) in standard configuration; higher on request
Accuracy: ±1% steady-state, even at low flow and high pressure
Stroke adjustment: 0% to 100%, manual or automatic (while running or stopped)
Fluid temperature range: -22°F to 230°F (-30°C to 110°C) as standard; up to 600°F (315°C) optional
Ambient temperature range: -40°F to 122°F (-40°C to +50°C)
Explosion-proof options available (ATEX II 2 G Ex h IIC T3 Gb X compliant)
Multiplexing available with any combination of frame sizes
Built to API 675 standards for metering pump performance
Compact footprint with durable variable eccentric drive
Liquid-end options include:
Packed Plunger (UT, N, NX): Ideal for viscous fluids and low NPSH conditions; pressures up to 1,000 bar
Metallic Double Diaphragm (M, MX): Handles extreme high-pressure applications up to 20,000 psi; leak-free with long diaphragm life
PTFE Double Diaphragm (H, HX, P): Wide chemical compatibility, virtually leakproof, rated up to 5,801 psi (400 bar)
Available liquid end materials: 316L stainless steel, PVC, Alloy 20, 17-4ph, and others
Available features: diaphragm rupture detection, electronic capacity control, steam/cooling jackets, remote heads, custom base plates, and special check valves
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