Looks like there might be some sort of a gearing mechanism in the top of that Hydrant, judging by the shape of the top part.
Possibly, this could be to turn it on quicker than a direct drive spindle.
Could one of the FF's here please explain why there are two sizes of couplings on that Hydrant?.
The larger one looks like a standard Feeder size, what is the smaller one for?.
{Message edited to add last question}
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[This message has been edited by Trumpy (edited 01-12-2005).]
