The feed valve taps into the water supply to provide feed water for a point of use RO or water treatment system. These are offered in several styles to accommodate most plumbing scenarios.

• Clamp-On Self-Piercing Valves (also known as saddle valves) clamp around hard copper pipes and puncture a hole through which the feed water flows. Includes an on/off valve to shut off the RO feed water at the source.
  
  
• Adapter Valves are installed by disconnecting the faucet line from the supply line and connecting each to either end of the adapter valve. Includes an on/off valve to shut off the RO feed water at the source.
  
  
• Diverter Valves attach to a standard threaded faucet. The handle on the valve allows you to switch the water flow back and forth from the sink to the filter without disconnecting the valve.