Round brass part of something

[James57]

I found this in a park that dates back to the mid 1800s. It is 1-1/4 inches in diameter and the round part is 5/32" thick. It is heavy and it seems to be made of brass or bronze. It gave a real nice coin signal and it was a bit disapointing when I got it out of the ground - especially after seeing something round in the hole.

I don't think that it's that old but does anyone recognise it?

 

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[~MetalDigger~]

Looks like it may of held some gears, part of a gear box of some kind.

 

[vhs07]

I believe this is one side of a "gate" from a gate valve. A threaded stem would go inbetween two of these that would raise or lower the gate to as it was turned, there by opening or closing the valve.

 

[Angelo]

I believe VHSO7 has it.

Take a look at part #4 on the left schematic.

http://www.cranevalveservices.com/admin/A6249_Indysys_CraneServ/cvparts.pdf

Tony