The Integrated Resin Bypass model allows you to effortlessly switch between tap water for washing and deionized water for a spotless rinse. This simple valve maximizes resin life by making it easy to use DI water only when needed. Comes installed, No assembly required.

Includes:

• Two 20-inch de-ionizing resin cartridges. 
• PVC hose connectors.
• Filter wrench.
• Spray nozzle (Important! Use on flat or center setting to restrict flow to less than 2.5 gallons per minute).
• Battery operated water purity indicator (TDS meter).