There was a time when master plumber Tim Breault used to take showers at work — and not by choice. But those mishaps dried up after he found out about the Palmer’s Plug, a plastic device used to perform pressure tests of drainage, waste and vent (DWV) lines.“I swear by them,” says Breault, who has been a plumber for more than 35 years and owns Tim Breault Plumbing in Charlotte, North Carolina. “They’re ingenious. When I first saw one, my first thought was, ‘Why didn’t I invent that?’ I turn other plumbers on to them and they say, ‘Are you
