About Supply Stops

Supply stops, also known as shut-off valves or angle stops, are plumbing valves used to control the flow of water to fixtures such as faucets, toilets, sinks, and appliances. They are typically located under sinks, behind toilets, or near the plumbing connections of various fixtures.

Here are some key features and information about supply stops:

  1. Function: Supply stops serve as a convenient point of control for shutting off the water supply to a specific fixture or appliance. They allow for easy maintenance, repair, or replacement of plumbing fixtures without needing to shut off the water supply to the entire building.

  2. Design: Supply stops are typically small valves with a handle or lever that can be turned to open or close the valve. The valve is connected to a threaded or compression fitting, which attaches to the water supply line of the fixture or appliance.

  3. Types: There are different types of supply stops available, including compression stops, quarter-turn stops, and sweat stops. Compression stops require tightening a compression nut onto the water supply line, while quarter-turn stops have a lever or handle that requires a 90-degree rotation to open or close the valve. Sweat stops are soldered onto copper water supply pipes.

  4. Usage: They are primarily used for maintenance purposes, such as repairing or replacing faucets, toilets, or other fixtures. They are also helpful during emergencies, allowing quick shut-off of the water supply in case of leaks or plumbing issues.

  5. Installation: Supply stops are typically installed during the initial plumbing installation or can be retrofitted as needed. They are placed close to the fixture or appliance they control, usually within easy reach for operation and maintenance.

  6. Maintenance: Periodically inspect and operate supply stops to ensure they are functioning correctly. If a supply stop is leaking or not shutting off the water flow completely, it may require repair or replacement.