Brine line flow control (BLFC) button 0.25 gallons per minute (gpm). Used to regulate brine fill speed on Fleck 5600, 9000, and 9100 series control valves. Fleck part #12094
Brine line flow control (BLFC) button 0.5 gallons per minute (gpm). Used to regulate brine fill speed on Fleck 5600, 9000, and 9100 series control valves. Fleck part #12095