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. Threaded end is 1.5" MPT.
- Winterizing a pool becomes a one-person operation.
- Eliminates burping of lines.
- No need to drain water below returns.
- This double seal system provides a watertight seal.
- Includes safety cap for ice protection.
- Heavy duty rubber is resistant to anti-freeze and other chemicals.
- Can blow out main drains and multiple return lines in matter of seconds.
- Use with a winterizing skimmer door and save even more water.