My main water shutoff valve no longer turns, and getting the city to come and shut water off at the curb is a bureaucratic hassle. I'd therefore like to install a valve without being able to shut off the water to the house. My thought is to cut the pipe downstream from the existing valve and install a new valve there, then use the new valve as the shutoff for the house.
Is it possible to install a Sharkbite (or other push-to-connect) valve on a pipe that is fully running? I assume I'd get pretty wet, but is there any reason why this wouldn't get the job done?
The water line into the house is 3/4-inch copper.