Gear Pumps
Product Overview

The gear pumps are designed primarily for metering and transfer applications. Their modular design allows a wide variation of flow ranges with a standard parts set. These pumps provide a broad class of industrial pumps in flow ranges of 10 ml. per minute to 1 gal. per minute. All of the gear pumps are self-priming and are “constant flow” pumps when RPM and differential pressure are constant. The materials of construction for bodies, gears and seals, provide a wide range of fluid compatibility.

Gear Pump Specifications:
Flow Rates — Range to 1.01 gpm
Max Pressure — 240 psi
Max Fluid Temperature — Range to 199°F (93°C)
Motors — Thermally protected, continuous duty rated. Available in brush and brushless type DC motors.

Materials in Contact with Solution:
See individual pump series and product charts for details. For alternative material options see the OEM Options section below or consult the factory for assistance.

Selection Procedure:
Determine the flow and discharge head requirements for your system. The performance curves on this page provide the flow rates for each gear pump series. If the performance curve characteristics of a pump model do not meet the exact requirements of your application, please consult the factory.

For proper selection of the materials of construction (pump body, seals, shafts, hose connectors, gears, O-rings) refer to the Chemical Resistance Section.

Mesh Size Recommendation:
A minimum 80 mesh screen is generally recommended for gear pumps for filtering such things as shavings, packaging materials, etc., in systems that are generally free of particulate contamination. For systems where sand, silt or other particle contamination is expected, a 400 mesh minimum screen is recommended. It should also be noted that sufficient strainer area be provided in order to prevent pump starving and cavitation. The fluid flow rate and viscosity determine how much strainer area is needed. System design should always include testing with the inlet strainer blocked and with maximum fluid viscosity.