1-1/4" Threaded Fire Pump Flow Meter
by GVI 

GVI venturi style fire pump flow / test meters are FM Approved for use in measuring the amount of water being discharged during a fire pump test. Standard construction is carbon steel, red powder coat finish and furnished with your choice of a 4" or 6" analog meter dial, 4" or 6" glycerin filled dial, a 3.5" full digital dial, or liquid filled hybrid analog gauge with 4-20 MA transmitter available in either a 4.5" or 6" Dial, see PDF for additional gauge details.