back flow preventor

Hi guys, I am installing an irrigation system for our back yard and I am trying to do it the right way. I have researched a lot about the code for this area (Washington, King county)and it is very confusing on this topic. So after all the research here is what I am planning on doing: Tap in to...

I've installed 8 (90 gallon) rainbbarrels in four locations around my house, due to the various pitches on the roof. I was told I could hook them up to my existing drip systems which were perfectly balanced for city water pressure..... NOT... The drip system doesn't get enough gravity pressure...

Hello! I am in the process of renovating my basement and will be building a new bathroom as well. The contractor already installed the drains for a shower, a toilet and a sink and a 4" backflow valve (the Bow model with a trap door) because there was none previously.Now, since the old plumbing...

The back-flow preventer on my outside tap was leaking where the preventer screws onto the tap. When I tried to loosen the locking screw to tighten or remove the preventer, the screw snapped off. Yep. The back flow preventer doesn't bother me per se, but I would like to use timer value on the...