Pool Winterizing and Drain Plug for Drain, Skimmer, and Plumbing Ports A simple, reliable plug that seals pool drains, skimmers, and plumbing openings for winterizing, maintenance, and water drainage. Designed to stop leaks, prevent unwanted flow, and make seasonal pool care easier. Key benefits Prevents water loss and unwanted flow during winterizing and repairs by forming a secure seal in drain and skimmer openings. Simplifies maintenance: plug drains and plumbing ports quickly to isolate sections for cleaning, repairs, or pressure testing. Reduces risk of freeze damage by blocking water movement in exposed lines and fittings when preparing the pool for cold weather. Easy to install and remove without tools for fast setup and takedown. What it does Seals pool water openings including main drains, skimmer boxes, and exposed plumbing ports. Serves as an expansionstyle plug that compresses to fill the fitting and hold in place without permanent modification. Provides a watertight barrier for draining, winterizing, or isolating plumbing sections. Important attributes Function: Expansionstyle plug for draining, blocking, and winterizing pool drains, skimmers, and plumbing openings. Compatibility: Fits standard pool drain, skimmer, and plumbing openings that accept expansion or compressiontype plugs. Verify the opening type and size before . Size: Available to match common drain and skimmer diameters. Choose the correct size to ensure a secure fit. Material and performance: Constructed from a durable, flexible material that compresses to form a tight seal, resists deformation during installation, and holds pressure for routine pool service tasks. Ease of use: Tool installation in most cases; designed for quick positioning and secure holding. Use scenarios Winterizing a pool: Install the plug in the main drain or skimmer port to block water flow and isolate plumbing lines before adding antifreeze and closing the pool for winter. Seasonal maintenance: Plug pool plumbing ports or skimmer openings to drain sections of the system, perform repairs, or components without shutting down the entire system. Leak testing and pressure checks: Temporarily seal drains or skimmers to pressurize and test sections of the plumbing for leaks or to verify repairs. Installation tips Confirm the opening type and measure diameter before selecting a plug. Clean the seating surface to remove debris for a better seal. Handtighten or expand as required by the plug design until a snug, leak fit is achieved. Do not overtorque if the plug uses an expanding mechanism. Choose the correct size and verify compatibility with your pool drains, skimmer boxes, and plumbing ports to ensure reliable sealing and long service life.