Looking for help identifying whether I have a frost free/resistant garden hose bibb. We got hit with some freezing weather this week and I neglected to disconnect the hose from the bibb prior to the freezing temperatures. All day at work was hoping I didn't come home to a disaster but no visible issues inside or outside the house, nothing frozen, leaking, or running when not supposed to so I'm praying I got lucky this time. 

Bibb was already installed prior to me purchasing the house so I can only go off of what I can see visually, but I believe it to be frost free or resistant.

Identifying features:

- Casting marks on body of fixture- ABP and USA (Arrowhead Brass and Plumbing?)

- Valve handle and stem appear to be in line with pipe 

- Drains for 4-5 seconds after valve is closed

- Green valve handle/knob

Primarily concerned because there is no isolation valve inside of the house. Since I left the hose connected it would not have been able to drain even if frost free, but liquid water did drain out of the bibb after disconnecting the hose. Tested the valve by cycling fully open and closed with no issues or leaks inside or out. Once everything thaws, I'd hate to be surprised by a wet basement just because I thought I was all good but missed something important. I plan on calling out a plumber to sweat in an isolation valve inside the house and replace a shark bite coupling under the kitchen sink in the near future, right now looking for peace of mind or reassurance this isn't a more time sensitive issue. 

Photo attached, can provide more if needed, and ready to answer any questions .

Thanks to all for your time, I appreciate ya. 






Identify/verify frost free hose bibb