Forum Title: Loop at water inlet. Does anyone know why?
Hi All, I am wondering if any one could help me understand this setup I have at my house. The main water feeding into my house goes through this loop with three valves and a pressure reducer on one of the portions of it. To me it seems that if all valves are open it would bypass the pressure reducer? Does any one know why I would have a setup like this?
Category: Plumber Post By: JAVIER PARK (Coppell, TX), 06/28/2016

Quote: Originally Posted by rtomassini Hi All, Does any one know why I would have a setup like this? Not a typical set up for a single family home. ByPass loops like that are sometimes used on multi-unit buildings for the purpose of servicing the pressure reducing valve with out shutting off the water to the building. Probably a plumber, with more commercial experience, over thinking and applying what he was taught when that service was installed.

- MABEL MORAN (Rockford, IL), 09/12/2017

You can isolate the prv If you ever need to replace it. you won't have to shut water to the house

- ISAAC SIMON (Fairfield, CA), 10/02/2017

The valve on the loop is supposed to be closed, unless you want to bypass the prv , then it should be open and the other two closed.

- VICKIE MARQUEZ (La Mesa, CA), 10/10/2017

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