3 gears heads in one

[Hydros]

In the center is a three gear pump head is made by Casappa (Italy).
On the right sits a #11 gears (COLOSSUS) made by Marzocchi.
To the left is an industrial pump head bolted to a Fenner Stone motor sold by Grainger.

[Hydros]

Another view, Here the blue pump head has a much larger gear length. Everything about its is about twice the size of the Marzocchi. The inlet port alone is approx. 1.25" And the shaft is splined.


With the right motor, that blue gear head could make one kick-ass combo.

And way off in the back is yet another type of gear head, much smaller and round. About the size of a number 4 (old style Fenner)