Fleck 3900 3" Duplex Commercial Metered Water Softener

.scrollable-table { overflow-x: auto; -webkit-overflow-scrolling: touch; } table { min-width: 800px; border-collapse: collapse; } th, td { border: 1px solid #ddd; text-align: center; padding: 8px; } Fleck 3900 3.0" Duplex Metered Commercial Water Softener This is a 3" full flow Fleck 3900 duplex water softener with NXT2 controllers and 3" Clack meters. It is a very heavy duty system capable of continuous flow and is available in 450,000 to 1,200,000 Grain Capacities per tank. Features Two full 3.0" valve for high flow rates. Utilizes 8% cross-linked high-capacity ion-exchange resin. Utilizes NXT2 Programmable Controllers. Up to 1,200,000 Grain Maximum Capacity. User friendly Fleck 3900 control valves with NXT2 Controls. The NXT2 Network Controller uses on-board communication capabilities to link multiple commercial valves (via off-the-shelf CAT5 or better cables) for a variety of system types. Safety brine valve wit