Abstract:
A life extending, pop-up sprinkle comprising a riser pipe, a collar, a pop-up shaft with a threaded head, an o-ring, a weight, and a spray insert. The riser pipe is threaded at both ends. The lower threads are designed to mate with the specially threaded cavity in the sprinkler head body. Threaded onto the upper threads is the collar, which has a opening, having a hexagonal (or other shaped) cross-section, in its upper web. Sliding inside this opening is the cylindrical pop-up shaft which has a mating, outer, hexagonal (or other matching shaped) cross-section. The O-ring is slipped over the lower end of the shaft and a cylindrical (or other shaped) weight is screwed onto the lower end of the shaft. Both the O-ring and the weight are of larger diameters than the shaft so as to preclude leakage. The upper end of the shaft terminates in a cylindrical pop-up head which is also larger in diameter than the shaft.