There are several companies manufacturing nose pumps. You can get the pump in cast iron and cast aluminum. Some pumps come with three bolt holes for holding the pump in place, one in front and two in back. Some come with two bolt holes up front and two in back. I have not seen where one brand had an advantage over another brand other than the aluminum models are lighter to handle.
Manufacturers have a little different instruction with their pumps.
Some companies say it is possible to deliver water to 300 ft. Some say with a vertical lift of 25 ft. I think both of these are close to the maximum. The farther the water is pumped the harder the pump works. One nose pump can supply water for up to forty head of cows.