Thanks Mitchell. That's very informative. I think I have one installed (the plumber called it pressure reducer? Or this is entirely different thing? ...

Hi, I'm looking at installing check valve after the water main (this is to reduce our prevent from pipe knocking) - Can any one let me know what is t ...

Thanks!! Sounds like I have to change to the similar style water inlet from the bottom as per your suggestion... I thought there might be a diverter I ...