The 15cm dropper assembly connects an overhead sprinkler or mister to low density poly supply pipe. Its supply barb inserts into a suitable punched hole in the pipe, and its lower female press-fit connector accepts the male inlet on the sprinkler or mister. The stabiliser helps the head hang steadily.
The purple-pin AD20 valve is fitted between compatible male and female press-fit components. It opens when inlet pressure reaches 200kPa, then closes as pressure falls to 90kPa. Closing before the pipe empties helps reduce drainage and dripping after shutdown and keeps water in the distribution pipe between watering cycles.
CoolNet Pro and SpinNet heads use the matching male press-fit inlet. Push that inlet into the female connector to assemble the connection.
