do you open up water lines when shutting off the water main
This valve is usually in the basement or on an outside wall in a utility area of the house. The main shutoff valve allows a full flow of water through the pipe when itâs open. Turning off this valve (by turning it clockwise) cuts off the water supply to the entire house. The main shutoff valve in your house probably has one of two designs: Gate valve: Gate valves are very reliable and last for years, but they become difficult to turn after not being turned for years.