These valves, typically located behind the washing machine and connected to the water supply lines, control the flow of both hot and cold water to the appliance. They are usually shut-off valves, meaning they can be closed to stop the water supply, which is essential for maintenance, repairs, or preventing leaks when the appliance is not in use. A common type is a dual shut-off valve, featuring separate handles for hot and cold water, offering individual control. These valves are usually quarter-turn ball valves for quick and easy operation.
Properly functioning inlet controls are crucial for preventing water damage and ensuring efficient appliance operation. Closing them during periods of non-use or when leaving home for extended periods mitigates the risk of leaks and potential flooding. Easy access to these controls allows for rapid response to plumbing issues, minimizing damage and facilitating repairs. Historically, simpler valve designs required more effort to operate and were less reliable. Modern designs offer improved control and durability.