Fire hydrant Flowmeter

The Hydrant Flow Gauge is pre-calibrated to measure water flow from 2.5" hydrant nozzles in gallons per minute and pounds per square inch. It will fit any 2.5" nozzle opening without the use of tools.

To operate, remove the 2.5" hydrant nozzle cap. Clean the thread to remove grease or foreign matter. Open hydrant to flush any debris from the barrel. Shut down hydrant. Assemble on the top of the nozzle thread with the blade parallel to flow. Select a thread, then tighten thumb screw to securely hold assembly on nozzle. Open hydrant fully. Purge the air from the bleeder by turning counterclockwise. After water flows from bleeder, retighten. Read pressure in pounds on inner ring, gallons per minute from outer ring.

Note: Tube length and gauge face are sized for 2.5" only; use on other diameters will cause inaccuracy. This unit performs a dynamic or kinetic test. This device should not be used for a static test.

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