Milton Roy Milroyal Engineered Pumps

The MILROYAL® has been widely recognized as the most reliable and robust industrial duty metering pump since its introduction in 1962. MILROYAL® is depended upon in critical processes in oil and gas, chemical and hydrocarbon processes, water and waste treatment, and in just about every imaginable industry where chemical injection is required.

The MILROYAL® design is modular thus allowing it to accept a variety of liquid ends and other options that perfectly tune it to process requirements. There are three different frame sizes to provide precision over a wide range of capacities and pressures. Multiplex configurations of the same frame or a mixture of frames create even greater application flexibility.

Technical characteristics
  • Flowrates from 0.14 l/h to 345 l/h (100% - 50 Hz)
  • Maximum pressure: 500 bar
  • Maximum temperature of pumped fluids: +110 °C
  • Available liquid ends version: DSD, Packed plunger version, Metal version with metal diaphragm, 316L stainless steel or PVC version with single or double diaphragm (HPD)
  • Adjustment while running or stopped, from 0 to 100% of nominal flow rate
  • Accurate to within ± 1% - API 675-compliant
Available liquid ends

DSD® technology version
  • Liquid end with Dynamic Stiffness Diaphragm
  • Available in PVC, PVDF or 316L stainless steel
  • Low flow injection of highly concentrated chemicals
  • Injection of viscous products up to 7000 cP
  • Plastic liquid end up to 35 bar
  • High suction lift up to 6 m WC
  • Reduced maintenance costs : long service life rigid diaphragm, very few liquid end components, just 40 ml of oil in liquid end
  • Internal six-function valve
    • 1. Safety valve
    • 2. Admission valve
    • 3. Air bleed
    • 4. Oil tank - just 40 ml
    • 5. Visual overpressure indication
    • 6. Visual oil level indication
Packed plunger version
  • Suitable for high pressures and high temperatures
  • Single packing as standard, optional double packing with flushing ring
  • Wide range of versions in terms of construction materials, size and performance
Metal version with metal diaphragm
  • Completely leakproof by means of metal/metal contact (diaphragms/valves)
  • Suitable for very high pressures
  • Suitable for specific products such as radioactive or diffusing liquids
  • Differential safety valve with integrated air bleed valve (patented). Adjustable pressure setting
  • Assembly designed for service life in excess of 10,000 hours
  • Oil compensation valve with adjustable pressure setting
316L stainless steel or PVC version with single or double diaphragm (HPD)
  • Completely leakproof
  • Moulded, preformed PTFE/elastomer composite diaphragm
  • Patented reusable diaphragm. Service life in excess of 20,000 hours depending on the type of product pumped, service and installation conditions
  • Safety valve with integrated air bleed valve (patented). Adjustable pressure setting
  • MARS hydraulic fluid compensation valve (patented)
Possible options
  • Materials compliant with offshore use of the pump
  • Sandstorm protection
  • Motor for frequency variation, NEMA mounting, explosion-proof, for specific ambient temperatures
  • Liquid end materials on request
  • Screwed or flanged connectors (ANSI, DIN or ISO)
  • Special valves for any type of fluid
  • Electronic or pneumatic actuators
  • Stroke counter
  • Multiplexing possible up to 10 heads
  • DosaSkid®, plug-and-play dosing solution

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