Quick Answer
To prevent freeze damage to a capped hydrant in winter, drain the water, blow out any remaining water, and install freeze-proof hydrant caps or add a freeze protection valve.
Winterizing the Hydrant System
To prevent freeze damage, it’s essential to winterize the hydrant system. This involves draining the water from the hydrant and blowing out any remaining water. Use an air compressor to blow out the water from the hydrant, and make sure to check for any signs of ice or frost formation.
Installing Freeze-Proof Hydrant Caps
Freeze-proof hydrant caps are designed to prevent water from entering the hydrant when it’s capped. These caps typically have a specialized valve that allows air to enter the hydrant while keeping water out. Install freeze-proof hydrant caps on all capped hydrants to protect against freeze damage.
Additional Freeze Protection Measures
Consider installing a freeze protection valve on the hydrant. These valves automatically drain the water from the hydrant when temperatures drop below a certain point. Install a valve with a temperature sensor to automatically activate the freeze protection feature when needed. Additionally, consider insulating the hydrant piping and caps with foam or fiberglass to reduce the risk of freeze damage.
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