Old Frost Free units... replaceable or SOL?

[locus123]

We bought a new (older) house. The prior owners installed frost free faucets outside. They're probably 20ish years old. Leaking of course. Inside the house, they've drywalled over where I could access it, so replacing them is a real PITA. This old version doesn't have an anti-siphon on the top. Am I SOL or is there any way to identify this part so I can purchase a replacement stem? Looks like most plumbing supply stores only sell the full unit now, which I would purchase if I thought there was any hope of being able to dismantle and retrofit and have it actually fit.

Ideas? Help? Please...

 

[locus123]

I thought I'd figured it out, but BK products says they always have a BK or M on the side. This has nothing on the sides... just MTCO on the handle.

Any ideas?

But the internals are very similar to the Multi Turn Standard 10" model.

Below is a great document that helps if you have a BK or M on yours:
http://bkproducts.com/wp-content/uploads/BK-Products-Sillcock-Identification-9b.pdf

 

[Sponsor]

 

[locus123]

Posting this for someone else, in case this comes up again.

This turned out to be an Aqua Dynamics 10" Frost Free. I bought one at Home Depot, pulled the internals out, and replaced it. Worked great.

 

[LLigetfa]

I have several of these that one-by-one all failed as per my thread linked below. My solution was to solder closed the ends of the replacements.

https://terrylove.com/forums/index.php?threads/frost-free-sillcock-freeze-damage.65614/post-487092