ANDERSON WINTER DUCK PLUG - WDP150
Allows plumbing lines to be winterized without draining the pool. The patent-pending "duck-bill" valve allows a large flow of air and water to be blown from the return plumbing but does not allow water back into the lines.•No need to drain water below returns•Double seal system provides a water tight seal on all 1 1/2" threaded fittings•Includes safety cap for ice protection•Heavy duty rubber is resistant to anti-freeze and other pool chemicals