Arrowhead Frost-Proof wall hydrants are high quality hose bibs.
I have come across two problems over the years. Both have to do with not removing the hose after using the hose bib.
The first problem is the shaft bust when the hose is not removed during freezing weather.
The second problem is the bib leaks out of the weep hole during use. This is caused by a worn out O-ring on the check assembly.