Description
This winterization plug features 1 1/2" MPT threading designed to seal swimming pool return lines during cold weather preparation. Compatible with standard pool wall fittings and select Hayward sand or DE filter models, this threaded stopper prevents water from remaining in your plumbing system during off-season months. Installation is straightforward—remove your current eyeball fitting or wall jet and thread this plug directly into the opening. An integrated o-ring ensures a watertight seal to protect your pool infrastructure from freeze damage.
