Performance parameters: rubber roof, adjustable spray fan top elevation: 15 degrees lower elevation rain curtain nozzle 25 degrees elevation Yulian standard nozzle into the water interface: 3/4 "internal thread work flow:. 0.17-2.19m3 / h range: 7.6-15.2 m recommended operating pressure:. 1.7- 4.5kg / cm2 maximum working pressure:. 5.2kg / cm2 nozzle extension drop height 127mm (5 ") Technology Co., Ltd., Zhengzhou fine crown, in landscaping, greening. Pins sprinkler nozzle fountain, artificial fog landscape design, construction, and landscape irrigation equipment, environmental equipment.