Rain Bird 100-DVF 1 in. valve with flow control
Replacement or new-zone valve.
Check price on Amazon ↗Sprinkler repair
How to add a zone to your sprinkler system
A new zone needs a valve, a free station on the controller, and a wire to the valve plus the common. Can’t run a new wire? A two-valves-on-one-wire module can help.
Check this first
- Check for a free station on your controller. The Add-A-Zone module installs at an open station and lets two valves share one field wire with separate schedules (The Source).
- Plan the valve location: an accessible spot close to the area it serves, following your local building codes (Hunter).
- Install the valve with the arrow pointing in the direction of water flow. Use cut-thread nipples and Teflon paste; hand-tighten, then add ¼ turn with a wrench (Hunter).
- Run the wire and seal the splices with direct-bury waterproof connectors (King Innovation spec sheet, Southwire spec sheet).
▶ Watch howInstalling Valves and Wiring in a Residential Irrigation SystemOfficial Hunter Landscape Irrigation video on YouTube ↗Converting an old indexing valve? The zone lines connected underneath it must be reconnected to the new electric valves. See the indexing valve conversion guide.
Parts you may need
The Source Add-A-Zone (RCO)
Runs two valves on one field wire. Specs
Check price on Amazon ↗Southwire 18/7 sprinkler wire, 100 ft
Direct burial up to 30 V; 7 conductors. Specs
Check price on Amazon ↗King DryConn waterproof connectors, 20-pack
Direct-bury splices at 30 V or less. Specs
Check price on Amazon ↗Affiliate links: as an Amazon Associate we earn from qualifying purchases. It doesn’t change what we list.
When to call a pro
Not comfortable digging up valves or testing wiring? The EPA suggests hiring an irrigation professional certified by a WaterSense labeled program (EPA WaterSense).
Find a pro →Steps summarized from the linked manufacturer and EPA pages (checked 2026-10-18). If your valve or head brand differs, follow its manual.