Why Winterizing Your Sprinkler System Matters

Step-by-Step Guide to Winterizing Your Sprinkler System

Winterizing your sprinkler system with a backflow preventer involves a series of important steps to ensure that all water is removed from the pipes and components. By properly winterizing your system, you can prevent damage caused by freezing temperatures and ensure your system is ready to go when the warmer months return. Here’s a detailed guide to help you through the process:

1.) Turn Off the Water Supply

The first and most important step in winterizing your sprinkler system is to turn off the water supply to the system. This step ensures that no additional water enters the system while you’re working on it, preventing any accidental flooding or damage. Locate the main water valve for your sprinkler system, which is usually found near the backflow preventer or where the system connects to your home’s main water supply. Turn the valve clockwise to shut off the water. This will stop water from flowing into the system and allow you to safely proceed with draining it.

2.) Drain the System

Next, you’ll need to drain the system to remove any remaining water that could freeze and cause damage. There are a few methods for draining your sprinkler system, and the right method depends on the type of system you have.

• Manual Drain Valves:

If your system is equipped with manual drain valves, locate these valves, which are usually found at the lowest points of your sprinkler lines. Open each valve fully to allow any water to drain out of the pipes. This process may take a little time, as gravity will naturally pull the water out of the system.

• Automatic Drain Valves:

If your system has automatic drain valves, they will automatically open and release the water when the system is depressurized. This is a convenient option, as it eliminates the need for manual intervention. Once the water supply is turned off, these valves will open, and the system will drain on its own.

• Blow-Out Method:

For systems without manual or automatic drain valves, the blow-out method is the most effective way to remove water from the pipes. Using an air compressor, you can blow the water out of the system. Start by attaching the compressor to the blow-out port, which is usually located near the backflow preventer or main valve. Slowly increase the air pressure to push the water out of the pipes. It’s important to do this in sections, starting with the furthest sprinkler head and working your way back toward the compressor. This ensures that all water is expelled from the system. Be cautious not to use too much pressure, as it can damage the pipes or components.

3.) Protect the Backflow Preventer

After draining the system, the next step is to focus on protecting the backflow preventer. This device is crucial for preventing contaminated water from entering your clean water supply, and if it freezes, it can be costly to repair or replace. Make sure the backflow preventer is fully drained, as any remaining water can freeze and cause damage.

To protect the backflow preventer, you can insulate it with foam covers designed specifically for this purpose. These covers are easy to slip over the device and provide an extra layer of protection from freezing temperatures. Alternatively, you can wrap the backflow preventer in old towels or rags to help insulate it. Be sure to cover all exposed areas, including any valves or pipes connected to the preventer. In particularly cold climates, consider using a heat tape or cable to further protect the preventer from freezing.

4.) Turn Off the Controller

Finally, you’ll want to turn off the sprinkler system’s controller. The controller is responsible for activating the system on a schedule, and leaving it on during the winter months could cause the system to activate, potentially leading to damage if the pipes are not properly winterized. Turn the controller off and, if possible, unplug it to prevent it from accidentally turning on. Some systems have a “winterize” setting that disables the automatic operation of the system, so be sure to set it to that mode if available.

Tips for Preventing Damage During Winter

While winterizing your sprinkler system is essential, there are a few additional tips to help prevent damage during the colder months. These precautions can provide extra protection and ensure your system stays safe and functional when the warmer months return:

1.) Insulate Exposed Pipes

2.) Check for Leaks

Before winterizing your system, take the time to inspect the entire sprinkler system for any leaks. Even small leaks can cause water to remain inside the pipes, increasing the risk of freezing and potential damage. Check all sprinkler heads, valves, and connectors for signs of leakage, and repair any issues you find before proceeding with the winterization process. This ensures that no water is trapped inside the system, which could cause freezing or damage to the backflow preventer.

3.) Use High-Quality Backflow Preventers

Investing in a high-quality backflow preventer is an excellent way to protect your sprinkler system from freezing and reduce the risk of contamination. A reliable backflow preventer ensures that water flows in the correct direction, preventing any reverse flow of contaminated water into your clean water supply. High-quality models are designed to withstand freezing temperatures, providing added durability and protection for your system. If you haven’t upgraded your backflow preventer recently, it may be worth considering a more robust model to ensure the longevity of your system.

Frequently Asked Questions