Is the Rachio Controller compatible with an indexing valve?

How an Indexing Valve works

Indexing valves are activated by sufficient water pressure being turned on and off. Therefore, no electrical wiring is required to the solenoid valve. All that is needed for an indexing valve to operate is a controller to turn on and off the water supply (pump or solenoid).

Video Guide


Indexing Valve FAQ

How do I wire up an Indexing Valve with my Rachio controller?

To connect an indexing valve to the Rachio controller, simply connect the wiring from your old timer (usually an Intermatic) to the Master Valve terminal on the Rachio controller, enable the terminal in the app (within "More" tab > "Controller Settings" > "Master Valve" > "Well or Pump Start Relay") then configure each "chamber" of the Indexing valve as its own zone within the app.

What if I have an Index Valve and a Pump?

It's important to know if your water supply is coming from the house (city) or a well (pump). If pump fed, a pump relay is required to run your system. A pump relay is an electrical device that steps up the power from the Rachio controller (24VAC) to your pump (110VAC-220VAC).

CAUTION : In order to avoid potential damage from ELECTRICAL INTERFERENCE, relays should be installed at least 15 FEET away from the Rachio controller.


How do I create watering schedules with an Index Valve?

Our Delay Between Zones setting is a way to setup schedules on an indexing valve. With the delay between zones feature enabled, you eliminate the need for separate schedules.

To activate the Delay Between Zones feature, you must enable a well or pump start relay within your controller settings. You can learn how to enable this here.

When enabled, we suggest setting a 5-minute delay between the zones.



Are there any limitations to indexing valves and the Rachio controller?

Yes, there are 3 limitations to indexing valves:

  1. Since we cannot activate individual "chambers" on demand (see animation above), indexing valves are not compatible with Flex Schedules .
  2. Indexing valves require you to run the valves in order to rotate through the valve chambers accordingly. As such, you cannot manually run an indexing valve, as it will cause your chambers to get out of order with your zones.
  3. Since indexing valves are dependent on the water supply being turned on and off, our Smart Cycle feature cannot be used with an Indexing Valve without causing your chambers to get out of order with your zones.
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