Hi everyone, I am hoping to get my greywater system working for me. I have a four bedroom 5 bathroom house with a 4″ ABS sewer system and 3″ ABS greywater collection. I want to install a diverter valve and backflow preventer and am getting nowhere with these inquires at plumbing supply places in LA. I am in 90027. ANy suggested sources for these components would be appreciated. I am planing on installing something like this: