* "Watering Tube Wide" is a perforated pipe which has been developed for outdoors only. * Please use it always within the proper working pressure range. In addition, even within the proper working pressure range, please open and close the valve carefully in order to prevent explosion caused by water hammer, etc. * Dragging and bending a hose cause of the decline years of endurance and damages. * In the case of using the bad quality water, please use the disk filter (more than 80 mesh).