"whats the difference between pressure vacuum breaker and spill proof vacuum breaker?
Answers:
A pressure vacuum breaker is a water backflow device that prevents liquid, mainly water, to backflow up a piping system by "dumping" any liquid that enters the device the wrong way to atmosphere, usually out the top. A spill proof vacuum breaker is the same thing, only the liquid is directed to a drain, instead of all over the place when it dumps. Both are for protection of the potable water supply in a building, house, or dwelling. Hope this helps!
Other answers:
Here's a couple of links to the two different type of vacuum breaker. Hope it helps.
Here's a couple of links to the two different type of vacuum breaker. Hope it helps.