It is likely the Buzz Bee Toys does have an ideal nozzle orifice calculation as Duxburian and I have done for a while (though if they do not, please use it!).
I used that for my piston homemade. Havn't been able to drill the nozzle, though....
It uses batteries, but does not need them to work.
It is a battery operated/diaphram system.
I am inclined to disagree with you, soakerman.


