Sprinkler Head Seepage Persists After Head Replacement

When a New Head Doesn’t Stop the Leak, Check the Valve

If water still seeps from a sprinkler after replacing the head, the problem is almost certainly the zone valve not sealing completely. The valve’s diaphragm or seat is likely worn or obstructed.

Valve Repair Steps

1. Locate the valve box for the affected zone.
2. Turn off the main water supply.
3. Remove the valve bonnet screws and lift off the top.
4. Inspect the rubber diaphragm for tears, deformation, or debris.
5. Clean the valve body and seat thoroughly.
6. Replace the diaphragm (inexpensive and eliminates guesswork).
7. Reassemble and test.

This 15-minute repair usually resolves persistent seepage. If the valve body is cracked or the seat pitted, replace the entire valve.