Metering Pumps

Metering Pumps

The metering pump is a positive displacement chemical dosing device with the ability to vary capacity manually or automatically as process conditions require. It features a high level of repetitive accuracy and is capable of pumping a wide range of chemicals including acids, bases, corrosive or viscous liquids and slurries.

The pumping action is developed by a reciprocating piston which is either in direct contact with the process fluid, or is shielded from the fluid by a diaphragm. Diaphragms are actuated by hydraulic fluid between the piston and the diaphragm.

Metering pumps are generally used in applications where one or more of the following conditions exit:

  • Low flow rates in mL/hr or GPH are required
  • High system pressure exists
  • High accuracy feed rate is demanded 
  • Dosing is controlled by computer, microprocessor, DCS, PLC, or flow proportioning
  • Corrosive, hazardous, or high temperature fluids are handled
  • Viscous fluids or slurries need to be pumped


SOLAROY® Solar Powered Pumps & Injection Systems The Best Solar-Powered Metering Pumps Under the Sun

mROY® Series Metering Pumps The mROY® Series sets the metering pump standard for durability and performance in a compact and cost effective design.

Introducing E.R.I.C.™ The Intelligent Metering Pump Introducing E.R.I.C.™ The Intelligent Metering Pump, engineered to meet today’s most demanding standards for accuracy, reliability and process control flexibility.

PRIMEROYAL® Series Metering Pumps The PRIMEROYAL® Series of metering pumps deliver an unrivaled combination of increased power and accurate control

POWEROYAL® API674 Positive-Displacement Reciprocating Pump The Poweroyal positive-displacement reciprocating pump provides outstanding performance in demanding conditions. such as higher flow rates and high resistance. Ideal for high-pressure/high-volume applications, the pump has been designed for maximum performance in minimal space.

MILROYAL® Series Metering Pumps The MILROYAL® has been widely recognized as the most reliable and robust industrial duty metering pump since its introduction in 1962.

MAXROY® Series Metering Pumps MAXROY® is a rugged, industrial grade series of metering pumps designed for applications up to 232 GPH (732 l/hr) at pressures up to 150 psi (10 bar).

MACROY® Series Metering Pumps The MACROY® Series Metering Pump is designed for outstanding reliability and value for applications up to 175 psi (12 bar).

Centrac Centrac Engineered for Accuracy

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 210 Bulletin Rev C - 7-08   Bulletin 230 Chemical Resistance Guide