How to Winterize a Drip Irrigation System with Orbit Parts

If you live in a region where temperatures drop below freezing, winterizing your drip irrigation system isn’t optional—it’s essential. Water left inside drip lines, fittings, and emitters can expand when frozen, cracking plastic and damaging seals. A single overlooked valve can lead to costly repairs come spring. With the right approach and a few Orbit components, you can safeguard your investment and ensure your system delivers perfect performance when warmer weather returns.

This guide walks you through the complete winterization process using Orbit parts you may already have or can easily add. From shutting off the water supply to blowing out the lines with compressed air, each step is designed to protect every component of your drip system. By the end, you’ll know exactly how to prepare your irrigation setup for the cold months ahead.

Why Winterizing a Drip System Demands Extra Care

Drip irrigation systems operate at low pressure and use small-diameter tubing. That makes them especially vulnerable to freeze damage. Unlike larger pipes that can accommodate some ice expansion, drip lines and emitters have limited tolerance. A frozen emitter can crack, while ice in the mainline can split a PVC joint. Even small leaks can waste water and undermine the precision drip irrigation is known for. Taking the time to winterize properly avoids these headaches.

Another reason to prioritize winterization is the complexity of modern drip setups. Many systems include backflow preventers, pressure regulators, and multiple valve zones. Each of these components has its own freeze risk. For example, a brass backflow preventer might burst if water freezes inside it. By following a systematic process, you address every vulnerable point. Orbit offers durable accessories that make the job easier, from flexible outlet connectors to smart controllers that help automate the shutoff sequence.

• Leaving water in drip lines can cause irreversible cracking of fittings and emitters.
• Backflow preventers and pressure regulators are especially prone to freeze damage.
• A thorough winterization saves money on repairs and extends system lifespan.

Step 1: Shut Off the Water Supply and Drain the Mainline

Start by turning off the main water supply to your irrigation system. If you have a manual shutoff valve at the house or a separate irrigation line, close it tightly. Next, open any drain valves or end caps on the mainline to release standing water. If your system slopes, gravity will help remove most of the liquid. For flat installations, you may need to blow out the line (covered in step 2).

A handy tool for this phase is the Orbit Hose Y with Flexible Outlet. You can attach it to a spigot and connect a garden hose to one side, then use the flexible outlet to drain water away from the foundation. This simple accessory makes it easy to direct runoff without creating a mess. It also serves as a useful connector when you need to attach a drain hose to a low point in your mainline.

• Always close the main shutoff valve before opening drain points.
• Sloped lines drain naturally; for flat lines, consider using a small air compressor.
• The Orbit Hose Y with Flexible Outlet simplifies drainage and provides a flexible connection point.

Step 2: Perform an Air Blowout to Clear Drip Lines and Emitters

An air blowout is the most effective way to remove water from drip tubing and emitters after draining the mainline. You’ll need an air compressor with a regulator (set between 40-50 PSI for drip systems—never exceed 80 PSI). Connect the compressor to the system via a blowout adapter. If you don’t have a dedicated port, you can use the Orbit Hose Y with Flexible Outlet to create an air connection through a hose bib.

Work through each zone one at a time. Turn on the zone valve manually, then introduce air for 2-3 minutes until you see only mist exiting the farthest emitter. Repeat for all zones. Pay special attention to drip lines that run uphill—they trap more water. After blowing out, leave all valve handles in the closed position. This step is critical: even a teaspoon of water left in a fitting can freeze and crack it. The Orbit system’s modular fittings are designed for easy disassembly if you need to access a stubborn area.

• Always use a pressure regulator—too much PSI can damage drip emitters.
• Blow out zones individually from the closest to the farthest valve.
• If you have a smart controller, turn off the power to prevent accidental activation.

Step 3: Protect Valves, Backflow Preventers, and Pressure Regulators

Valves and backflow preventers are the most expensive parts of a drip system to replace. After blowout, remove any manual drain plugs from valve boxes and tilt the box to let residual water escape. For backflow preventers, disconnect them if local codes allow, and store them indoors. On a few systems, you can use a blowout adapter to push air through the unit as well.

Pressure regulators should also be removed and brought inside—they have small internal passages where ice can lodge. If your system uses a master valve, ensure it is closed and drained. For smart control, consider using the Orbit B-hyve Gen 2 Wi-Fi Hub to monitor temperatures remotely. While the hub itself isn’t a winterization part, it allows you to see freeze alerts and confirm the system is off. That extra peace of mind can be valuable if an unexpected thaw triggers a valve.

• Remove backflow preventers and pressure regulators for indoor storage.
• Tilt valve boxes to drain standing water around the solenoid.
• The Orbit B-hyve Gen 2 Wi-Fi Hub provides real-time temperature monitoring to help you decide when to start winterizing.

Step 4: Disconnect Hoses, Store Accessories, and Mark Repairs

Any hoses or temporary drip lines should be disconnected and drained completely. Coil them loosely to avoid kinks, and store in a garage or shed. The Orbit 50 ft. Aeroflex Expandable Hose is lightweight and easy to store—just drain it, wipe dry, and hang on a hook. Also, remove any nozzles, spray heads, or emitters that can be unscrewed. These small parts are prone to cracking and are much cheaper to replace if damaged.

As you work, make a note of any fittings or sections of tubing that appear worn or slightly damaged. Spring is the perfect time to replace them with Orbit drip accessories, but marking them now saves you from hunting for issues later. Use weatherproof tape or a marker on the tubing. This proactive step ensures you have a complete list of replacement parts ready when the growing season begins.

• Drain and store all hoses indoors to prevent rubber from hardening in the cold.
• Small emitters and nozzles can be stored in a labeled container.
• Inspect tubing for cracks or UV damage during winterization.

Step 5: Set Your Smart Controller to Off or Freeze Protection Mode

If you have a smart irrigation controller, winterizing isn’t complete until you disable the watering schedule. The Orbit B-hyve Gen 2 Wi-Fi Hub allows you to turn off all zones remotely from the app. You can also set a system-wide ‘rain delay’ that lasts until spring. This prevents any accidental activation if the temperature rises temporarily. Some smart controllers have a ‘freeze protect’ feature that automatically stops watering when temperatures drop near freezing—activate that before you shut down.

For conventional timers, simply switch to ‘off’ or ‘rain mode.’ Remove batteries if the timer has a backup battery—they can corrode over the winter. If your timer is indoors, you may not need to do anything further. But for outdoor models, consider covering them with a weatherproof enclosure or temporarily removing the faceplate and storing it inside. The Orbit 7-Day Programmable Thermostat is a different product (used for HVAC), but the principle of disabling outdoor electronics applies.

• Use the B-hyve app to disable all watering schedules and enable freeze protection.
• Remove backup batteries from outdoor timers to prevent corrosion.
• Document your smart controller settings before winter so you can restore them in spring.

Winterizing your drip irrigation system may take an afternoon, but it saves you from expensive repairs and ensures your plants get the precise watering they need next season. With Orbit parts like the Hose Y with Flexible Outlet for easy drainage and the B-hyve Gen 2 Wi-Fi Hub for smart shutdown, the process becomes straightforward. Once you’ve drained, blown out, and stored everything, you can enjoy winter knowing your system is safe. Come spring, reconnect the parts, open the valves, and you’ll be back to efficient watering in no time.