Can someone tell me what to suspect if every time I turn on a water facuet in my home or flush a toilet there is a noise that sounds like a motor of some sort going thorough a recycling phase that takes place about a minute after the water source is turned off. It is the loudest on the wall where the main water pipe leads out of the house and it is loud!

Thanks

Can someone tell me what to suspect if every time I turn on a water facuet in my home or flush a toilet there is a noise that sounds like a motor of some sort going thorough a recycling phase that takes place about a minute after the water source is turned off. It is the loudest on the wall where the main water pipe leads out of the house and it is loud!

thanks
Do you have a PRV,(pressure reducing valve) installed down there? Back to you, Tom