They are sensor-operated units that help decrease the spread of germs since people don't have to touch the valve to activate it

Overall Height 10-1/8"

while still giving the unit an attractive gleam

UV inhibitor helps resist sun damage

RPM Range Under 1000

Aquatrol Bronze Safety Relief Valve, MNPT Inlet Type, FNPT Outlet Type - 89B2-125 Capacity-Two 8" Rolls They are sensor-operated units thatThis AQUATROL safety relief valve features single ring blowdown to assure quick, accurate reseating when opening popping. Model includes sealed and closed hex cap. For use in air compressors, pressurized production lines, and tanks.