Rotary gear pumps come with many advantages. From only having 2 moving parts and 1 stuffing box to their non-pulsating discharge to their excellence with high-viscosity liquids, industrial gear pumps may be the right choice for you. Gear pumps are extremely versatile, and they give you a constant and even discharge regardless of your pressure conditions. They also operate consistently in either flow direction.

Rotary gear pumps can tackle liquids up to 750°F / 400°C because of their single point of end clearance. They can run dry for short periods if circumstances arise and they are bi-rotational, meaning that the same pump can be used to load and unload vessels. Operation is also simple and maintenance is also easy.

1. Determine your need. Rotary gear pumps are often used for thin liquids, but they are also great for thick liquid like asphalt, adhesives or chocolates.

2. Review your budget and set a price range for your business.

3. Ask the supplier for custom installation or if not available, detailed instructions and customer support to help you properly install your new pump.

Action Steps
The best contacts and resources to help you get it done

Buy pumps with rotary gears from experts in the field

Purchase rotary gear pumps from companies that have been in the business for decades and have perfected rotary pump design.

I recommend: The Gorman-Rupp Company has been in business for 75 years. Their rotary gear pumps available in medium duty, heavy duty and extreme duty models, and you have your choice of cast iron, cast steel and stainless steel. They come with patented features for better performance and greater reliability. Oberdorfer Pumps has been in business over 100 years. They offer many styles of rotary gear pumps including bronze pedestal pumps, close coupled pumps, bronze pedestal pumps, self-priming pumps, carbonator mount pumps and ductile iron pumps. They offer standard pumps but can also customize to your needs.

Seek a wide variety of rotary gear pumps from your distributor

Purchase gear pumps from distributors with a wide variety of products.

I recommend: DJ Gongol & Associates, Inc. offers high pressure gear pumps and gear pumps with or without the engines included. Their rotary gear pumps are capable of lifting 15 feet and giving consistent flow. Their products are available for quick shipment anywhere in the U.S. Corrosion Fluid Products Corp. offers Gearex Rotary Gear Pumps, the GR Rotary Gear Pump, the GAX Series Cast Iron Rotary Gear Pump and the Sier-Bath Two Screw Gear Pump.

Look at manufacturers of rotary gear pumps

There are a large number of gear pump manufacturers nationwide. Find the right rotary gear pumps for you by looking into the manufacturers themselves.

I recommend: Check out the EnviroGear, a magnetically coupled internal gear pump, by PeopleFlo Manufacturing, Inc. Bowie Industries, Inc. is another of the gear pump manufacturers. They are located out of Bowie, TX and distribute nationwide and into Canada.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  If using a positive displacement rotary gear pump, it's recommended that you insert a pressure relief valve in the discharge piping in a place that is upstream from the first of any potential blockage.