Winterizing Plug for Swimming Pool Lines A durable rubber winter plug designed to protect pool plumbing and lines during cold months. Use this plug to block water entry, reduce risk of freeze damage, and stabilize system pressure while your pool is winterized. Key benefits Prevents plumbing from freezing and blocks water from filling lines during winter, reducing the chance of freezerelated cracks and leaks. Acts as a winter expansion plug for lines and other pool plumbing openings to limit movement and stress from expanding ice. Durable rubber construction provides a long service life and a reliable seal for seasonal use. Simple to install and remove, suitable for routine winterizing and offseason storage. Main features and attributes Function: Seals pool lines and plumbing openings to prevent water ingress and freeze expansion. Material: Made from durable rubber for flexibility, resilience, and repeated use. Compatibility: Intended for use on swimming pool lines and similar plumbing fittings requiring winterizing plugs. Fits common pool plumbing openings used for winter closure. Performance: Creates a tight, reliable seal to limit water entry and reduce the risk of freeze damage to pipes and fittings. Practical applications and use scenarios Seasonal winterizing: Install the plug in each line before cold weather to block water entry and protect internal piping when draining or lowering pool water. Offseason protection: Use the plug as an expansion relief device in line fittings to reduce stress on fittings and valves during freeze and thaw cycles. Maintenance and storage: Remove the plug when reopening the pool in spring, inspect for wear, and reuse the same plug for multiple seasons. What to expect A straightforward winterizing accessory that helps safeguard pool plumbing during cold weather. A reusable rubber plug suitable for regular seasonal maintenance and winter shutdown procedures. Note: Ensure the plug is installed in the correct line openings and inspected periodically for wear before each winter season.