Dosing Pumps | McMaster-Carr

Automatically control output from a distance using 4‐20 mA or external-pulse signals. These pumps meter a consistent amount of liquid within ±2% of the maximum flow.

Extended-Life High-Accuracy
Metering Pumps for Chemicals

A 316 stainless steel housing provides corrosion resistance for a long life in harsh environments. These pumps meter a consistent amount of liquid within ±2% of the maximum flow.

Panel-Mount Fixed-Flow-Rate
Metering Pumps for Chemicals

Install these pumps in a panel cutout. Often used in food and beverage, pharmaceutical, and lab applications, they dispense small amounts of liquid at a set rate.

Fixed-Flow-Rate Metering Pumps for Chemicals

Also known as peristaltic pumps and tubing pumps, these maintain a fixed flow rate.

Inline Water-Powered Metering Pumps for Chemicals

Inject chemicals into your water supply without using electricity—these pumps install directly in your pipeline and activate when water flows into the pump head.

High-Viscosity Metering Pumps for Chemicals

Rated for liquids with a viscosity up to 10,000 centipoise, these pumps can be used with very thick chemicals such as electropolishing solutions.

High-Pressure Metering Pumps for Chemicals

These pumps can be used with pressures four times higher than standard pumps for chemicals.

High-Pressure Metering Pumps
for Chemicals with Locking Lever

An adjustment dial with a locking lever allows for easy flow control. Also known as diaphragm metering pumps, these can be used with pressures up to four times higher than standard pumps for chemicals.

Miniature Metering Pumps for Chemicals

With a footprint that's only a few inches in any direction, these pumps fit into compact systems to dispense small amounts of acids, cleaning fluids, and other chemicals. They're often used in sterilization, photochemical, and water treatment systems.

Metering Pumps for Chemicals

An adjustment screw lets you increase or decrease flow rate without the hassle of changing tubing. Often used in boiler feed systems and water treatment, these pumps are compatible with chemicals such as cleaning fluids and acid-washing solutions.

Flanged Metering Pumps for Chemicals

Commonly used in mining, wastewater treatment, and other systems that require large-diameter hose, these pumps have flanged hose connections and large diameter tubing.

Syringe Pumps for Chemicals

Dispense precise amounts of fluid from a syringe. Commonly used in chemical and pharmaceutical research, fiber production, and equipment calibration, these pumps maintain a steady flow rate for accurate filling and measuring.

Remote-Adjustment High-Pressure
Metering Pumps for Chemicals

Automatically control output from a distance using variety of analog and digital signals, including 4-20mA and external pulse signals.

High-Flow Metering Pumps for Chemicals

For high-volume chemical sampling and draining, these pumps have a powerful motor that enables them to move 2,448 gallons of liquid per day.

Metering Pumps for Coolants and Oils

Use these pumps for high-pressure output of antifreeze, hydraulic oil, and motor oil.

Maintenance Kits for Metering Pumps

Keep your metering pump in working order by replacing worn parts.

How to Prime Your Pump

How to Determine Feet of Head