What causes a sprinkler valve to stay open?

Air Trapped in the Valve: The valves may have air trapped in them. A small bubble of air becomes trapped in the tiny water ports of the valve, this stops the water from flowing through the port. Since the water flowing through the port is what holds the valve diaphragm closed, the valve stays open.

How do I find my sprinkler master valve?

Start at that sprinkler and try to find the valve nearby. The cheapest and easiest way to find buried irrigation valves is often to probe the soil with a thin rod, such as a long screwdriver. Often you can estimate the rough location of the irrigation valve, then find a buried valve box by probing the ground.

Can you turn off a sprinkler head?

Do what it takes to free up that tiny screw in the center of the head. Turn the tiny screw in the center head counter-clockwise with a screwdriver until it feels tight, which generally will take between a quarter and a half turn.

How to fix sprinkler zone that won’t turn off?

(Here’s How To Fix It) 1 Turning Off the Sprinkler System. The first step in troubleshooting why a sprinkler zone won’t shut off is turning off the system. 2 Video: Shutting A Sprinkler System That Won’t Shut Off. 3 Troubleshooting a Sprinkler Zone That Won’t Turn Off. 4 Solenoid Problem Causing Sprinkler Zone to Not Shut Off.

What happens if you turn off your sprinkler system?

This will cancel any of the scheduled sprinkler times and kill the whole system so that you can inspect it safely. Depending on your individual sprinkler controller, your “Off” button may appear as “Rain Off,” or simply “Rain.”

Why won’t the zone turn off?

The soil, rocks, and loose debris that surrounds the system could potential tamper with the solenoid. When this occurs, the valve gets stuck open. This can keep the corresponding zone from turning off completely.

Where is the shut off valve on a sprinkler system?

You can find the shut-off valve at the source of water for your sprinkler system. By turning it off you’ll be effectively cutting the flow of water to only your sprinkler.