Gilmour 820054-1001 Mechanical Water Timer, 1 to 120 min, 15 to 120 psi Pressure | Continuous watering up to 120 mins. Full flow outlet for more sprinkler performance. Swivel nut for easy connection. Double outlets can be used at the same time. Works with water pressure ranging from 15 to 120 psi. Rubber overmold dial for better gripping. Easy to read top-view settings. Manual On/Off. Works with "My Design" sprinkler kits. Not for use with hot water.