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Install Backflow Connecting to Main
Okay, so we're going to look at installing a backflow preventer. Once again, check your local laws and regulations on plumbing. Sometimes this is a phase that a licensed plumber needs to do, but every city and state code if different.
In our case, we need a backflow preventer. Some need a more complicated backflow preventer, more sophisticated. Ours is a fairly simple requirement, so we want to go ahead and put a brass backflow preventer in.
This is a threaded backflow preventer, so we're going to tighten our threaded fittings into each side. Make sure they're fairly tight. You don’t necessarily have to put these in a vice to tighten them because you can actually break the pipe by doing that. So as long as you are putting the Teflon tape onto the threads and tightening it fairly tight, you should be fine. And this is what's going to our main waterline. So once you've got it taped and tightened, then we're just ...
