PWS20T-L Watts Pure Water Duplex Alternating Water Softening System Series is designed to deliver continuous, high-efficiency softened water for point-of-use and point-of-entry applications. Ideal for environments requiring round-the-clock water softening, these systems utilize a conventional cation exchange process to remove scale-forming calcium and magnesium ions, replacing them with non-scale-forming sodium ions for improved water quality and system longevity.

Each system features the advanced Watts LOCKSMITH™ control valve, a durable, corrosion-resistant brass valve that is highly configurable and easy to maintain. Operated by an electronic controller, the valve stores key operational history and supports metered, demand-initiated regeneration, ensuring regeneration only occurs when needed—saving water, salt, and energy.

With grain capacities ranging from 90,000 to 600,000, and mineral tank diameters from 14 to 36 inches, each tank contains 3 to 20 cubic feet of high-capacity ion exchange resin. Flow rates range from 55 to 119 gallons per minute, and all models include NSF and ANSI certified components with standard 2" FNPT inlet/outlet and 1" to 1½" MNPT drain connections, depending on the model.

The duplex alternating configuration ensures one tank is always in service while the other regenerates, providing uninterrupted soft water delivery for a wide range of residential, commercial, and industrial applications.

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