What is this please?

[Robert Giles]

Hello all,

At risk of appearing to be an amateur (which I am) can someone please tell me what I have here. It's on the side of a higher end home and each home in the neighborhood has one. I'd like to be able to properly identify one of these (and its function) the next time I come across one. I would appreciate the help.

[Rick Cantrell]

That is a backflow prevention assembly.

[Robert Giles]

thank you for the lightning fast response sir....

[Rick Cantrell]

It is connected to the lawn sprinkler.

[Ron Hasil]

That is an RPZ backflow prevention device, which needs to be certified yearly. Since it is outside the paperwork (certifications) should be hanging inside near the main shut off to that system.

[Robert Giles]

thanks Ron...good to know...

[Billy Stephens]

tell me what I have here..
.
Black Lighting Bolts ! :D
.

[Robert Giles]

yeah...I saw those...not in the original photo...must have happened when I reduced it to upload....i guess:o