My Lawn Genie's Valve Is Leaking

Valve Components

• Lawn Genie sprinkler valves incorporate user-serviceable components for easy leak repair. Most models are equipped with bleed screws to flush debris out of systems before they can damage valve seals. Lawn Genie valves incorporate jar-type valve bonnets for easy removal of valve springs and diaphragms. Lawn Genie sprinkler valves are also equipped with backflow prevention seals to avoid contamination of household water supplies. Most valves are threaded for easy installation onto existing supply lines without the need for PVC cement.

Leak Identification

• If the leak originates from a crack or other physical damage, replace the valve because it's the most economical course of action. A leak that's due to a faulty or damaged rubber seal is easily repaired. Locate the solenoid where the sprinkler control wires are attached to the valve and inspect the valve bonnet directly beneath it. This assembly houses the valve diaphragm, which is a frequent source of valve leaks. Lawn Genie valves with damaged diaphragms will exhibit leakage from under the solenoids or valve bonnet hold-down rings.

Leaking Seals

• To repair a leaky seal, loosen the hold-down ring located on the top of the valve body directly underneath the solenoid. Some models incorporate screws to secure the hold-down ring, while others use threads. Remove the exposed valve bonnet assembly and its spring. Use a flathead screwdriver to pry the rubber diaphragm from the valve body. Flush the area with water and check for cracks or any other visible damage. If the internal valve surfaces are undamaged, install a new diaphragm and spring. Install the valve bonnet and hold-down ring again.

Valve Replacement

• Lawn Genie sprinkler valves that are visibly cracked require removal and replacement of their entire valve assemblies. Begin by removing the damaged valve. Use a damp cloth to clean the exposed threads on the PVC supply lines. Turn on the water supply and flush the exposed lines completely to dislodge any debris that may be present in the pipes. Wrap each exposed section of pipe thread with three to five turns of Teflon tape to seal threads. Avoid using pipe dope or other liquid thread sealants on plastic sprinkler valves. Thread the threaded adaptors onto the valve and secure the valve to the PVC supply lines. Turn on the water supply to pressurize the system and test for leaks.