How to Winterize Your Orbit Drip Irrigation System: Step-by-Step Freeze Protection Guide

As temperatures drop, your drip irrigation system is at risk of costly freeze damage. Water left inside tubes, fittings, and emitters expands when it freezes, cracking pipes, bursting manifolds, and destroying delicate components. Winterizing your Orbit drip system isn't difficult, but it requires a careful sequence of steps to ensure every drop of water is removed. Whether you're using a simple hose-end timer or a full underground setup, following this guide will protect your investment and save you from a frustrating spring repair project.

Orbit's drip irrigation systems are designed for durability and ease of maintenance, but even the toughest polyethylene tubing can split when ice forms. Taking an hour or two to winterize now can extend the life of your system for years. In this guide, we'll cover everything from shutting off the water supply to storing your drip distribution tubing and accessories. We'll also highlight key Orbit products that make the process smoother, like the 1-Port Manifold Extension 57181 for easy draining and the 1/4 In. x 100 Ft. Black Drip Distribution Tubing 67301 for secure storage.

Why Winterizing Your Drip System Is Essential

Freezing water expands by about 9%, creating immense pressure inside closed pipes. Drip irrigation components like emitters, fittings, and tubing are not designed to withstand this pressure. A single freeze event can crack drip lines, blow out manifold connections, and ruin pressure regulators. The cost of replacing damaged parts often far exceeds the time it takes to properly winterize. Beyond component damage, trapped water can also encourage mold and algae growth inside tubes, leading to clogged emitters next season.

Orbit's drip systems use materials like polyethylene and polypropylene, which have some flexibility but are not immune to ice damage. By taking proactive freeze protection measures, you ensure that your system starts the spring in perfect working order. This is especially important for permanent underground drip installations, where repairs require digging and potentially disturbing landscaping. Even above-ground drip lines used for vegetable gardens or container plants benefit from a thorough winterization routine.

• Prevents cracked tubing and fittings
• Protects expensive components like timers and pressure regulators
• Eliminates the need for spring repairs
• Extends the overall lifespan of your system

Step 1: Shut Off the Water Supply and Disconnect the Timer

Begin by turning off the main water supply to your drip system. If you have a hose-end timer, remove it from the faucet and bring it indoors. For underground systems, close the valve on the backflow preventer or main shut-off. If you're using an Orbit B-hyve 12-Station Indoor/Outdoor Controller 57950, make sure to disconnect it from the power source (unplug the transformer or remove batteries) and store it in a frost-free location. Controllers contain sensitive electronics that can be damaged by moisture and cold.

Drain any water remaining in the hose or mainline by opening the faucet slightly and letting gravity do its work. For systems with a manual drain valve, open it now. If your setup includes a 1-Port Manifold Extension 57181, you can use its side outlet to attach a short hose for directed drainage. This extension makes it easy to connect multiple drip lines and also provides a convenient drain point. Leave all valves and open ends exposed to air during the next steps.

• Disconnect and store timers indoors (especially smart models like the B-hyve controller)
• Open manual drain valves or use manifold extensions to assist drainage
• Remove batteries from battery-operated timers to prevent corrosion

Step 2: Drain the Drip Lines – Gravity and Blow-Out Methods

Gravity drainage works well for systems with a slope. Elevate the higher ends of your drip lines and allow water to flow downhill and out through open ends or drain valves. For flat installations, you may need to lift sections of tubing to encourage water movement. Orbit's 1/4 In. x 100 Ft. Black Drip Distribution Tubing 67301 is lightweight and easy to coil, so you can lift it in manageable segments. Coil the tubing loosely to avoid kinks while draining.

For a more thorough approach, consider using a small air compressor (20-50 PSI maximum) to blow out remaining water. Attach the compressor to the system at the source connection (a blow-out adapter may be needed). Work through each zone or branch, blowing air until only mist or air exits the farthest emitter. Be cautious not to exceed 50 PSI, as higher pressure can damage drip components. This method is especially useful for systems with many emitters or long runs where gravity alone leaves trapped water.

• Hose-end gravity drainage is simplest but may leave water in low spots
• Air blow-out is more reliable for complete water removal
• Never exceed 50 PSI when using compressed air

Step 3: Protect Valves, Fittings, and Above-Ground Components

After draining, disconnect drip lines from the manifold or timer. Remove inline filters, pressure regulators, and any other removable fittings. Clean filters with water and let them dry completely before storing. Inspect O-rings and washers for wear; replace any that are cracked or flattened. If you have brass spray heads or shrub head sprinklers (such as the Plastic Shrub Head Sprinklers with Brass Spray Nozzles | 54040), remove them from risers and store indoors. These components can be damaged by freezing water trapped in the nozzle or body.

For underground valve boxes, insulate the area around the valves with foam or leave the box lid slightly open to allow moisture to escape. If your system includes a backflow preventer, it must be completely drained before freezing. Some backflow preventers have built-in drain plugs; open them and leave them open over winter. Use a towel or rag to absorb any residual moisture. If you anticipate extreme cold, consider wrapping exposed above-ground pipes and valves with insulation tape or pipe foam.

• Remove and store filters, regulators, and emitters indoors
• Drain backflow preventers and leave drain plugs open
• Insulate exposed valves or valve boxes in areas with hard freezes

Step 4: Store Drip Tubing, Fittings, and Accessories Properly

Once your drip lines are dry and disconnected, coil them neatly for storage. Avoid tight bends that could create permanent kinks. Orbit's 1/4 In. x 100 Ft. Black Drip Distribution Tubing 67301 can be coiled in loops about 2-3 feet in diameter and secured with a zip tie or rope. Store tubing in a garage, basement, or shed where temperatures stay above freezing. Direct sunlight can degrade polyethylene over time, so keep tubing in a dark box or bag if possible.

Smaller fittings, goof plugs, stakes, and emitters should be sorted and placed in labeled bags or containers. This saves time when you reinstall in spring. If you have manifold extensions or connectors like the 1-Port Manifold Extension 57181, store them with the tubing so you don't lose them. Also service any outdoor faucets: disconnect hoses, drain the spigot, and install a frost-proof faucet cover if needed. Taking these steps ensures that your entire irrigation system is protected from winter's worst.

• Coil tubing loosely; avoid kinks
• Store all components in a frost-free, dark location
• Label bags of fittings for easy spring setup
• Protect outdoor faucets with covers

Proper winterization is the best way to protect your Orbit drip irrigation system from freeze damage and ensure it delivers reliable watering when spring arrives. By following these steps—shutting off water, draining lines, protecting valves, and storing components correctly—you'll avoid costly repairs and enjoy a smooth startup next season. For an easy drain point in your system, check out the 1-Port Manifold Extension 57181. And if you need replacement drip tubing or want to expand your setup, the 1/4 In. x 100 Ft. Black Drip Distribution Tubing 67301 is a reliable choice. Take the time now to winterize, and your garden will thank you later!