The Home Sprinkler Installation PDFs From the pivot point, each sprinkler head covers extra area, thus the nozzle size in the lawn sprinklers increases the farther they lie from the pivot point. Several center pivots are installed with an "endgun," a large-volume sprinkler on the last tower farthest away from http://lukasyncpd.is-blog.com/1001703/the-basic-principles-of-installing-underground-sprinkler-system