... stops working, a top cover of sprinkler will descend to level of ground, it won disturb sight-seeing, tour, sports, ... , sprinkler will stretch out from ground automatically at high water pressure on it, and then finishing task, it also ... resistant and all parts are corrosion-resistant.Good uniformity of water distribution.3/4'' joint.Specifications Code681901681902681903681904681905 Mod, Size PSJPYX ...