8730 Jefferson Highway
Osseo, MN 55639
GVI is the worlds #1 selling Fire Pump Test Meter. We are the only provider with FM Approved / UL Listed flow meters. Now we also offer an FM Approved Digital Gauge with 4-20ma transmitter. Our patented venturi design means you will have the most accurate and stable flow meter on the market. Made in the USA, our machined heavy duty venturi will provide the longevity your project demands.