GPI, a Great Plain Industries brand, has been a leading provider of high-quality fuel transfer pumps, fuel meters, flowmeters and industrial instrumentation for over 40 years. The GPI Instruments catalogue includes a wide variety of fluid transfer pumps and digital / mechanical liquid flow meters for applications in various construction, mining, oil & gas, agriculture and fuel industries. The GPI range of pumps include turbine flow meters, oil transfer pumps, fuel pumps and drum pumps, having different flow rates and power & voltage ratings. The brand's oil transfer pumps are ideal for use with non-flammable fluids and are available in 115 V and 12 V voltage ratings.GPI mechanical flowmeters are designed to measure the flow rates of gases, liquids, steam, fuel products and acidic solutions. These flowmeters are equipped with a battery-powered LCD that displays measurements in gallons and litres. Choose from a wide range of these flowmeters and other GPI products, such as oil, air and fuel filters, as well as filter housings on Raptor Supplies.