Tips for Using and Maintaining the 3 4 Watts 009

If you're working on a residential or light commercial plumbing project, you've likely come across the 3 4 watts 009 reduced pressure zone assembly. It's one of those parts that isn't exactly "exciting" in the way a new faucet or a high-tech showerhead is, but it's absolutely vital for keeping your drinking water safe. Basically, it acts as a gatekeeper, making sure that nasty stuff from an irrigation system or a boiler doesn't flow backward into the clean water lines. ...

April 25, 2026 · 7 min · Kimberlee Rania