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Consistently Accurate | Primeroy L (PLG) Compact Metering Pump

Designed around the patented GSD (Global Security Device) diaphragm liquid end, the PRIMEROY L (PLG) is a very compact industrial pump for high flow rates, up to 871 gph (3,300 l/h), and mid pressure applications, up to 652 psi (45 bar).

Thanks to one unique oil design for mechanical lubrication and hydraulic chamber, there is no risk of oil cross contamination, making the PLG extremely reliable and safe.

The PRIMEROY L (PLG) compact metering pumps offer an unmatched reliable and safe dosing for any kind of fluids thanks to its unique and patented GSD design.

  • Material (liquid end): 316L S.S. / PVC
  • Pressure max: 652 psi / 45 bar (metallic liquid end); 150 psi / 10 bar (plastic liquid end)
  • Flow max: 871 gph / 3300 lph (metallic liquid end); 701 gph / 2657 lph (plastic liquid end)
  • Multiplexing capabilities
  • Flow variation control: Manual / Remote
  • Certifications: API 675, EC, ATEX, IECEX

The GSD design ensures triple hydraulic security, featuring an internal pressure safety valve, a diaphragm controlling the hydraulic refill, and the diaphragm itself is protected by a valve blocking the overrunning and the extrusion for maximum reliability.

The Installation Monitoring Indicator (IMI) system provides real-time visual alerts for overpressure, cavitation, and pulsation dampening issues, preventing dosing inaccuracies and disturbances. Additionally, the unique oil design integrates mechanical lubrication and the hydraulic chamber, eliminating the risk of oil cross-contamination for superior performance and longevity, while reducing drastically the pump footprint.

The contour plate-free technology enables the PLG pump to handle all fluid types, including clear, corrosive, toxic, volatile, abrasive, flammable, and highly viscous liquids or slurries.

The Primeroy L - PLG series part numbers start with prefix codes PLG***. Please see datasheet for full part number configuration options.

Download manual for the catalog of Primeroy L - PLG series parts

Milton Roy's PRIMEROYAL® Series Metering Pumps

Chemical/Petrochemical: injection of additives, transfer of ammonia water in fertilizer plant

Food and Beverage: injection of enzymes in starch production , injection of caustic soda for process water neutralization in refining and distilling application

Mining: injection of reactives to wash extracting ores such as platinum and gold

Oil and Gas: chemical injection of biocide, scale inhibitors to protect the pipes, injection of demulsifier to improve oil quality, injection of reverse emulsion breakers to meet water/water stream quality

Refinery/Downstream: chemical injection of boiler feedwater, injection of anti-fouling into the debutanizer, transfer of sour water before treatment, injection of catalyst during biodiesel

Utilities: conditioning of make-up water, protection of boilers, cooling systems and hydraulic systems (biocides, antifoam, oxygen scavengers, scale inhibitors)

Water/Wastewater Treatment: Municipal (drinking) Water Treatment: disinfection, fluoridation, coagulation/flocculation, pH control, water conditioning before and/or after RO treatment in desalination, and more

Industrial Water Treatment: protection of installed equipment such as boilers and hydraulic systems to prevent scale and corrosion

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