Hi I am attaching a picture of a fire sprinkler system coupling that is leaking. A plumber came to look at it today and couldnt identify it. He said if he cant find it in their catalog back at the office they will have to cut the actual supply pipe and replace the whole joint. Which I would rather avoid doing. So if anybody can identify that coupling and tell me where I can get a replacement, I would be very grateful!! Thanks, Paul.