Replacing a Supply Shutoff Valve in Your Home A supply shutoff valve is an essential component of any home's plumbing system, allowing you to control and shut off the main water supply as needed.
Typically located near the point where the municipal water line enters your property, this valve plays a critical role in preventing costly damage from burst pipes or other unexpected leaks.
There are two primary types of supply shutoff valves: gate valves and ball valves. Gate valves use a moving plate to block water flow, while ball valves utilize a rotating ball to control the flow of liquid.