Manufacturers do not recommend continuous pressure at the vacuum breaker for more than 12 hours. It is advisable to inspect them at least once a year Check out these fixes for common faucet problems
Vacuum breaker leaking under bonnet, where to find kit to fix? : r
If you’re lucky, you can fix your leaking faucet by simply tightening the nut under the handle.
When you turn off the valve the pressure on the supply side of the vacuum breaker may drop below the pressure on the outlet side
When this happens the vacuum breaker is supposed to admit air but a small amount of water can backflow out the holes in the vacuum breaker Otherwise you may have to drill out or cut out the set screw.more A leaking vacuum breaker is usually easy to replace if you don't have a set screw to worry about If your pressure vacuum breaker is leaking or malfunctioning, you've come to the right place for thorough repair information
