SpudFiles

I was rummaging around in my garage to search for piston sealing material a few minutes ago and i busted my toe on a plastic valve(I think). Well i picked it up and it had o rings and everything and i thought i hit the jackpot. The problem is that i don't know what it is or what its for. If my cousin didn't break our camera, i could show you, but yet, i can't. I drew up pretty much a to scale drawing of the valve, and all else i can tell you is that it fits 3/8 inch copper pipe. My dad said to hold on to it before i screw it up because it may be important for something. Here is the Pic... any thoughts of what it is?

First thing that came to mind is the thing in a blowgun.

Looks like something to a BB or pellet gun. Looks homemade also.P.S.     That sounds just like my dad, the whole, "hold on to it, it might be important" thing.

I dont have any blowguns though, unless its one from a Pressure washer handle, but that thing hadn't been taken apart.

Edit: cant be a bb gun cause i dont have one , and it cant be homemade cause I can only wish to have a lathe.

Is there any threads in it any where?

Is there any threads in it any where?

Nope, just a smooth brass tube through the middle.

Does it show any wear any where? Mineral deposits?

Nope it looks brand new. Its made out of some really hard black plastic though.

Edit: my dad said it could be a sprinkler head valve that blew off when he was trying to fix it. Could have shot in the garage right?

Thats why I ask about wear and deposits. Water use applications, I was thinking spickot repair kit.

Probably what it was from. Thanks for the help. Now on to what i should do with it...