G Series – self priming viscous liquid rotary gear pumps

G Series – self priming viscous liquid rotary gear pumps

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The Gorman-Rupp G Series range of self priming positive displacement rotary gear pumps is designed to provide superior performance in the transfer of process fluids, unmatched in the industry. Available in Medium-Duty , Heavy-Duty and Extreme-Duty (abrasive service) models, gear pump materials include cast iron, cast steel and stainless steel.

G Series self priming pumps are manufactured with unique features that enable them to perform better and last longer on countless applications, providing quality and reliability that make the G Series the premier gear pump in the industry.

Advantages include:

  • An automatic idler pin lubrication system uses the pumped fluid to continuously cool and lubricate the idler pin and bush to reduce wear in this area.
  • An internal seal cavity venting system provides a continuous flow of liquid through the seal area, ensuring cooling and reducing pressure. This reduces seal face
  • load, increasing seal life.
  • A deep “end-feed” area offers superior priming performance under low inlet pressure conditions and/or high viscosity liquids.
  • Easy to service
  • Viscosities to 440,000 cSt
  • Pressures to 20.7 bar (300 psi)
  • Flows to 2200 litres per minute
  • Handle a variety of liquids , including highly viscous, high temperature and abrasive fluids
  • Widest range of sealing options in the industry
  • High strength gear material eliminates the need for special steel fittings traditionally needed for viscous applications.
  • Widest range of housing ports
  • Widest range of bushing materials

Videos

Gorman-Rupp G Series Rotary Gear Pump Overview

An overview of the features, benefits and workings of the G Series line of positive displacement rotary gear pumps by Gorman-Rupp.

With Gorman-Rupp rotary pumps:

  • Built for continuous service, adaptability, and long life
  • Smooth non-pulsating flow
  • Clockwise or counter-clockwise rotation
  • Available in medium duty, heavy duty, and extreme duty

Ready to get started? Ask Our team »

How a Gorman-Rupp Rotary Gear Pump Works

3-D computer animation is used to demonstrate the principles of the Gorman-Rupp positive displacement rotary gear pump (G Series).

  • Positive displacement pump that moves fluid using the rotary motion of the pumping elements
  • Handles a wide range of viscosities while maintaining unparalleled efficiency

Learn more about Gorman-Rupp rotary gear pumps: Ask Our team »

Our expert team is standing by for any questions you have about how best to configure your pump system.

Data Sheets

Download the specifications to find the perfect pump for your project:

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Special Features and Pump Benefits

What makes the G Series pumps so versatile?

Deep End Feed Area

Deep end feed area decreases the Net Inlet Pressure Required by the gear pump, which in turn, allows pumps to run at faster speeds. Smaller gear pumps with direct drive motors can therefore be used where “traditional” rotary gear pumps would need to be bigger with gear boxes. This feature also offers superior priming performance.

Deep End Feed rotary gear pump

Automatic Idler Pin Lubrication System

Gorman-Rupp’s unique internal pressure lubricated idler pin reduces wear by continuously cooling and lubricating the idler pin and bushing.

Idler-Pin-Lube

Internal Seal Vent

Gorman-Rupp’s seal cavity venting system provides a continuous flow of liquid through the cavity, ensuring cooling. This system also ensures that the seal cavity is under lower pressure than “conventional” pumps, reducing seal face load and increasing seal life.

Internal-Seal-Vent

Back Pull-Out Design

The back pull-out design allows service and maintenance without disconnecting gear pump housing from piping. Servicing is therefore faster and more cost effective.

Adjustable No-Leak Pressure Relief Valve

Gorman-Rupp’s O-Ring seal design on the relief valve allows for adjustment during operation, without leakage. This means a safer and cleaner environment for operators

Pressure-Release-Valve

Flexible Seal Design

Gorman-Rupp heavy duty gear pumps allow for the most flexible sealing arrangements in the industry. They are engineered to allow installation of “industry standard” cartridge seals as well as a full array of Gorman-Rupp packing, lip seal and mechanical seal options.

Flexible-Seal-Design

Deep End Feed Area

Deep end feed area decreases the Net Inlet Pressure Required by the gear pump, which in turn, allows pumps to run at faster speeds. Smaller gear pumps with direct drive motors can therefore be used where “traditional” rotary gear pumps would need to be bigger with gear boxes. This feature also offers superior priming performance.

Deep End Feed rotary gear pump

Automatic Idler Pin Lubrication System

Gorman-Rupp’s unique internal pressure lubricated idler pin reduces wear by continuously cooling and lubricating the idler pin and bushing.

Idler-Pin-Lube

Internal Seal Vent

Gorman-Rupp’s seal cavity venting system provides a continuous flow of liquid through the cavity, ensuring cooling. This system also ensures that the seal cavity is under lower pressure than “conventional” pumps, reducing seal face load and increasing seal life.

Internal-Seal-Vent

Back Pull-Out Design

The back pull-out design allows service and maintenance without disconnecting gear pump housing from piping. Servicing is therefore faster and more cost effective.

Adjustable No-Leak Pressure Relief Valve

Gorman-Rupp’s O-Ring seal design on the relief valve allows for adjustment during operation, without leakage. This means a safer and cleaner environment for operators

Pressure-Release-Valve

Flexible Seal Design

Gorman-Rupp heavy duty gear pumps allow for the most flexible sealing arrangements in the industry. They are engineered to allow installation of “industry standard” cartridge seals as well as a full array of Gorman-Rupp packing, lip seal and mechanical seal options.

Flexible-Seal-Design

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Gorman Rupp Pumps LogoHydro Innovations is proud to be the sole distributor of Gorman-Rupp pumps in Australia.

Gorman-Rupp is one of the world’s leading manufacturers of self-priming sewage pumps and wastewater pumping equipment, and has been for more than 75 years. They offer a diverse range of high performance, high-quality, reliable pumps and pumping systems required for lasting service in wastewater pumps, sewage pumps, industrial waste, petroleum, fire and OEM markets. Learn more about Gorman-Rupp and our other partners »

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