Pentair Water Treatment, of Brookfield, Wis., introduces its new 9100 twin-tank valve for light commercial/residential water softener applications. Manufactured from durable glass-filled Noryl®, Fleck’s valve features a unique design that accommodates twin-tank system technology. The twin-tank valve uses 100 percent of the tank in service before switching to the second tank, which results in water and salt savings. The valve is available with a 3200 mechanical timer or SE electronic timer.