GPI, a Great Plain Industries brand, has been a leading provider of high-quality fuel transfer pumps, fuel metres, flowmeters and industrial equipment for over 40 years. Its headquarters is located in Sparta, New Jersey. Read More



Fleet and Vehicle Maintenance


Test Instruments


HVAC and Refrigeration



Pumps Filter

Drum and Barrel PumpsView all

  • Drum Barrel Pump Accessories

    Herbicide kits comprising 1 inch x 12 foot EPDM hose, a polypropylene ball valve nozzle and an adjustable polypropylene / polyethylene suction pipe. Suitable for use with chemical transfer pumps to control the flow of fluids discharged from the pump and managing nozzles used with the pumps

  • Drum Pumps

    CSA-certified chemical transfer pumps to pump low-viscosity fluids and empty drums, barrels & tanks in agriculture, hobby farm and lawn service applications. Feature a totally enclosed, non-ventilated motor offering a maximum flow of 12 gpm at 115 VAC / 12 VDC

Pump AccessoriesView all

  • Fuel Transfer Pump Accessories

    Comprises vent caps equipped with valves to compensate for changes in internal tank pressure due to temperature and fuel dispensing. Allow fluid removal at rates up to 30 gpm. Designed to fit a 2 inch NPT tank opening

About Gpi

GPI manufactures a wide variety of fluid transfer pumps and digital / mechanical liquid flowmeters for the construction, mining, oil & gas, agriculture and fuel industries. The GPI pump catalogue includes turbine flowmeters, oil transfer pumps, fuel pumps and drum pumps. The brand's oil transfer pumps are ideal for non-flammable fluids and mechanical flowmeters are designed to measure the flow rates of gases, liquids, steam, fuels & acidic solutions. These flowmeters are equipped with a battery-powered LCD that displays measurements in gallons and litres.

Things to Consider


GPI instruments and accessories are suitable for courier shipment & air freight. They require simple packaging, depending upon the product dimensions.

Major Trade Names


These professional-grade GPRO fuel transfer pumps offer high operating pressures, making them ideal for hose reels. They feature powder-coated cast iron construction and long-lasting carbon vanes that...Read more 

TM Series

TM Series water meters are designed for water processing and irrigation. They have a low-profile screen that displays measurements in gallons, litres and cubic feet. They are available in seven sizes ...Read more 


FLOMEC G2 Series meters are available in stainless steel construction for water, chemicals & fuels; aluminium construction for petroleum-based products; and PVDF construction for aggressive chemicals....Read more 

Frequently Asked Questions

What is factory calibration mode?

Your meter is in the factory calibration mode and is set to measure water and water-like fluids if it shows FAC or PRESET in the top right corner.

What is the best way to test the accuracy of a meter?

Your calibration can be easily tested by filling up a container. Start by resetting your batch total to zero. Then, start the flow and fill up the container. You should see '5.00 gallons' on your display if you filled up a 5-gallon container.

What is the expected lifespan of the lithium batteries of G2, A1 and TM meters?

Approximately 9000 hours.