If this is plumbing-related, and has to do with landscape sprinklers, it could be a drip pressure regulator, or an anti-drain-back for pop-up sprinklers.
It was used under a sink in a residence to reduce 3/8 copper to 3/16 copper in the hot water supply line. It broke and the resulting water release damaged the home. I am trying to identify the fitting to determine its proper use and purchase a few for testing, all in an effort to determine what caused the failure. By the way, it was in an outside wall and the outdoor temp was well below freezing. See photo...
. {A} ..... in an effort to determine what caused the failure. {B} By the way, it was in an outside wall and the outdoor temp was well below freezing. See photo...
It is a plastic "Quick Connector" AKA "Push-In Connector" similar to this one which is made by Watts.
I do not know the manufacturer of the one you have pictured. It is interesting that you say this was in an outside wall and may have been subjected to freezing. Freezing water in a pipe may induce a force of up to 40,000 PSI. nothing will withstand that! Other possibilities for the breakage could be shock or, stress related.
Are you looking for a method of repair or just a guilty party?
I use a similar fitting for my Sulphur Removal system. You can push tubing into the fitting and it will stay there without leaking until you physically pull the little ring device you see at both ends out maybe a 1/16th or so and then you can pull the tubing out again.
I just looked at one and there is no brand name on the fitting anywhere, just an arrow showing direction of flow.
Thanks for all the responses. To speedbump and jfarnold: Could you guys look closely at the first post which has the fitting next to a rule and see if the fittings that you are familiar with are similar in size? Are they black?
Once again, I am trying to identify it so that I can purchase a few for testing. All in an effort to determine what happened.
I don't have my Digital Camera right now, so I can't take a pic of the ones I use. When I get it back (if) I'll take a pic and post it. Mine is a check valve with male threads (1/4") and a barb fitting on the other end to go into 1/4" tubing.
The fitting is a push on type. If it has a directional arrow then it is a flo regulator of some type, either a volume control or a check valve. We would have to have it in hand to tell which. It is also probably a proprietary fitting that came with the faucet or something that was added to the system, because that type of valve would not normally be needed where you show it, unless there is something relevent that is outside your picture.