Quick Answer
To winterize water lines connected to a frost-free hydrant, drain the lines by closing the valve, blow out any remaining water using compressed air, and then install freeze-proof hydrant frost-proofers or frost-proofing caps.
Draining the Lines
Drain the water lines by closing the valve that supplies water to the frost-free hydrant. This valve should be located as close to the hydrant as possible. Next, open the drain valve or blowout cap on the hydrant to release any remaining water in the lines. This step is crucial in preventing water from freezing and bursting the lines.
Using Compressed Air
To ensure the lines are completely drained, blow out any remaining water using compressed air. You can use a compressor or a blowout kit specifically designed for this purpose. Attach the hose to the blowout cap or drain valve and blow compressed air through the lines. This will force out any remaining water, reducing the risk of freeze damage. A minimum of 30-40 PSI of compressed air is recommended to effectively blow out the lines.
Installing Freeze-Proofing Devices
After draining and blowing out the lines, install freeze-proof hydrant frost-proofers or frost-proofing caps. These devices are designed to prevent water from freezing in the lines by allowing air to enter the lines when the temperature drops below freezing. Follow the manufacturer’s instructions to install the frost-proofers or frost-proofing caps, and make sure they are securely attached to the hydrant.
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