What You Need to Know About a Faucet Vacuum Breaker
A faucet vacuum breaker is a device that prevents the backflow of contaminated water into the plumbing system. It is generally installed on outdoor hose bibs, irrigation systems, and other plumbing fixtures that are connected directly to the water supply. The vacuum breaker works by opening up a valve when the water supply is turned off, allowing air to enter the system and break the vacuum, which prevents any contaminated water from flowing back into the water supply.