Anderson Winterizing Duck Plug for 1-1/2" Fitting

Anderson Winterizing Duck Plug Features and Benefits Allows plumbing lines to be winterized without draining the pool The 'duck-bill' valve allows a large flow of air and water to be blown from the return plumbling BUT does not allow water back into the lines Heavy duty rubber is resistant to anti-freeze and other pool chemicals Includes safety cap for ice protection Double seal system provides a water-tight seal on all 1 1/2" threaded fittings