Slowly open the main shutoff valve to let water into the sprinkler system. For a ball valve, turn the lever handle one-quarter turn until the handle is parallel to the pipe; this is the fully open position. For an in-ground shutoff valve, use a sprinkler valve key to turn the valve counterclockwise until it stops.

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In this regard, where is the water shut off valve for my sprinkler system?

Locate the main shutoff valve on your irrigation system. It is between the main water supply to your home and the sprinkler controller. Alternately, the main shutoff is located outdoors near a faucet bib. The main valve may be in a box in this area to protect it from the elements.

Beside above, when should I worry about sprinkler system freezing? Sprinkler pipes and other components are at risk of freezing and breaking when temperatures drop below 32 degrees Fahrenheit. Immediate damage can occur to exposed pipes and sprinkler equipment with the first freeze of winter.

Additionally, how do I Dewinterize my sprinkler system?

How to Dewinterize a Sprinkler System

  1. Locate the vacuum breaker, which is usually near the manifold outside.
  2. Use a wrench to turn the small brass knob at the base of the vacuum breaker clockwise until tight.
  3. Locate the main water line.
  4. Turn the valve that connects the main line to the sprinkler system a half turn.

Why does my sprinkler system keep running?

There are two reasons why your sprinklers would continue running: It's possible your valves have been opened manually. You'll need to locate your valve box(es) and turn the solenoid(s) clockwise until snug. The solenoid is located on the top of the valve and looks like a cylinder with two wires protruding out of it.

Related Question Answers

When should I turn off my sprinkler system?

You should shut off your irrigation system just before temperatures in your region begin to dip below freezing at night. Don't shut off your irrigation system too early. Often homeowners shut their systems down as soon as the fall season arrives because they believe that their lawn requires less water.

How do you run a sprinkler system?

  1. plot types and locations of sprinkler heads. Plan the System.
  2. install an anti siphon valve. Access the Water Line.
  3. dig the trench for system.
  4. attach one end of valve manifold assembly to water.
  5. attach risers using 90 degree connectors.
  6. level sprinkler heads with soil level.
  7. timer controls length and frequency of waterings.

How do I find my sprinkler lines?

As others said, find the sprinkler heads (where the water sprays out) and if you mark them on a diagram of your lot you probably will see a pattern and be able to tell where the lines are. The lines should be in straight lines between the valves.

How do I find a sprinkler head without water?

How to Find Buried Sprinkler Heads
  1. Turn on your sprinkler system using its controller.
  2. Measure the distance between active heads using a tape measure.
  3. With the entire sprinkler system activated, identify blind spots in coverage.
  4. Probe blind spots with the tape measure and spade.

Where can I turn off my sprinkler system?

The shutoff valve is often located in the basement, a utility room or closet. Most shutoff valves are ball valves that have a handle. If the handle is running with the pipe, the water is turned on to the system. To shut the water off, turn the handle 90 degrees until it stops.

Can a sprinkler system leak when off?

There are two reasons why a sprinkler will leak water when the system is supposed to be off. The most common reason is called “Low Head Drainage”. If it is low head drainage, residual water will stop flowing after all the water has left the pipe.

Can one sprinkler valve control two zones?

Running multiple zones at once is usually not possible due water-pressure and flow limitations at residential properties. As with any standard irrigation controller, you can wire multiple solenoids/valves to the same zone output if you want.

Where is my water shutoff?

This valve is usually in the basement or on an outside wall in a utility area of the house. The main shutoff valve allows a full flow of water through the pipe when it's open. Turning off this valve (by turning it clockwise) cuts off the water supply to the entire house.

Why does one sprinkler zone have low water pressure?

Low water pressure in your sprinkler system cuts down the irrigation range and can even cause the sprinkler heads not to pop up at all. Here are some of the most common culprits: The valves on the backflow preventer device aren't all the way open. The shut-off valve or main water valve isn't all the way open.

Why wont my sprinklers turn on?

Go to one of the irrigation valves and turn the solenoid 1/4 to 1/2 a turn counter-clockwise. If the valve opens and sprinklers turn on, your valve is working and you'll need to check the controller and field wiring. If the valve did not turn on any of the sprinklers, the water to the valves is still off.

Should sprinkler valves be open or closed?

Make sure the sprinkler valve is closed, unless it's the valve farthest from the main water source. You'll want to leave this valve open and remove the sprinkler nozzle to allow air to escape when you turn on the water.

Where is my sprinkler valve box?

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.

What happens if you don't winterize your sprinklers?

The Danger of Not Winterizing Your Sprinkler System If you forget to winterize your sprinklers, you run the risk that water will freeze in the irrigation valves, pipes and sprinkler heads. When water freezes, it expands causing the parts of your system to burst and destroying your sprinkler system.

How long does it take to drain a sprinkler system?

Explanation: Winterizing an average residential sprinkler system takes one man about 15-30 minutes.