The arrowhead vacuum breaker is a diy fix that you can do yourself. If the old bib wasn't installed with enough slope or had poor insulation, the new one can correct those mistakes The vacuum breaker prevents a vacuum from forming due to the loss of water pressure, which could siphon water in the hose back up into the plumbing system
Hose Bibb Leak (Vacuum Breaker) - YouTube
If a hose is submerged a backyard pond or attached to a sprayer with pesticide or fertilizer, the contaminated water could be sucked into the home's drinking water piping.
The vacuum breaker should not leak when the valve is open and delivering water through the hose
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. So, if one needs to repair a leaky vacuum breaker it is easier, more cost effective, and less time consuming to simply replace the entire. When hose connection vacuum breakers start to spray water, it's a sign they need replacing Learn how to fix a leaky hose bib here.
The vacuum breakers on all of my outdoor hose bibbs are leaking The house is about 19 years old and the manufacturer of the hose bibbs is nibco The water is leaking out at the vacuum breaker (vb), above where the garden hose screws on. It is typically installed on the threaded end of a hose bib, also known as a spigot or outdoor faucet, and is an essential device for maintaining water quality and safety.
A hose bib vacuum breaker is a plumbing device designed to prevent backflow and protect your potable water supply from contamination
Why a proper hose bib installation matters preventing future freezes
