Recordall Fire Hydrant Meters

The Model 450 reduced pressure backflow preventer meter from Badger Meter is designed to protect the water system by preventing backflow through fire hydrants.

Water flows into the meter’s measuring element where flow readings are obtained by rotor revolutions transmitted by magnetic drive coupling through the meter’s cover plate to the sealed register. Magnetic drive is achieved by a right angle worm drive, coupling the rotor to the vertical transmission spindle. A ceramic magnet on the spindle rotates around the vertical axis. Through the magnetic coupling, rotor rotation is transmitted to a follower magnet which transmits rotation to the register gearing.