Irritrol R811-24VACG Replacement Solenoid — 5-Pack 24 VAC coils for irrigation valves

The Irritrol R811-24VACG Replacement Solenoid (5 Pack) is a direct-fit replacement coil designed to restore automatic irrigation valves that fail to open or close.

If your sprinkler or irrigation valve is sticking, not actuating, or the solenoid doesn't slide smoothly on the plunger, a worn or damaged coil is often the cause. This five-pack of genuine Irritrol R811-24VACG solenoids gives you spare, like-for-like components to quickly repair multiple valves or keep backups on hand. The kit supplies only the solenoid coils — ideal when the valve body, diaphragm, and other parts are still sound and you need a fast, cost-effective fix.

How will replacing the solenoid fix my valve?

A solenoid generates the magnetic force that lifts the valve plunger and allows water to flow when energized. When the coil is burned out, corroded, or the plunger binding prevents smooth movement, the valve will fail to open or close. Swapping in a new R811 coil typically restores reliable switching and consistent irrigation timing.

• Restores electromagnetic operation for proper valve actuation.
• Eliminates sticking by replacing worn coils that impede plunger travel.
• Saves replacing the entire valve when the body and diaphragm are intact.
• Five coils cover multiple valves or provide spare units for later use.

What electrical and physical specs should I check before buying?

Confirm that your valve requires a 24 VAC solenoid and that the R811 coil matches the valve's threading and plunger length. Also inspect wire connections and controller output voltage to ensure compatibility and safe installation. Using the correct voltage and fit prevents premature failure and ensures consistent performance.

• Rated for 24 VAC irrigation controllers and standard valve outputs.
• Thread and plunger dimensions match Irritrol valves designed for R811 coils.
• Check existing solenoid label or valve manual for voltage and fitment.
• Replace only coils—no additional valve parts included in the kit.

How do I install the replacement solenoid safely and quickly?

Turn off the irrigation controller and shut water supply before starting. Remove the valve bonnet, extract the old solenoid, and slide the new R811 coil onto the plunger; reconnect wiring following polarity and weatherproofing best practices. Testing a single zone after installation confirms correct operation without needing a full system restart.

• Power down controller and relieve system pressure before opening valves.
• Unscrew bonnet, carefully lift old solenoid, and inspect plunger for debris.
• Slide new solenoid onto plunger, secure bonnet, and reconnect wires with waterproof connectors.
• Run a manual station test to verify opening/closing and check for leaks.

Who is this pack for? Landscapers, irrigation technicians, property managers, and homeowners who maintain multiple sprinkler zones will appreciate this five-pack for its convenience and economy. If you service several valves or want spares on hand to minimize downtime, the Irritrol R811-24VACG Replacement Solenoid 5 Pack provides compatible coils for quick field repairs without replacing entire valves.