Irrigation 4inch Pop-Up Rotary Sprinkler (Gear-Drive Rotor)

< irrigation 4-inch (10cm. ) pop-up rotary sprinkler, our model no. "dpx-02": 
Rotor with "gear-drive" mechanism, similar to "rain bird" original model "5004", including a "plastic blue nozzle tree (12pcs. Different-pattern nozzles) ", offering the convenience of reversing "full-circle" & "part-circle adjustable from 40 ~ 360 degrees" operation in one unit >
1. Primary applications: 
It's a rugged mid-range gear-drive rotor ("rotary sprinkler") for irrigation, that can be used in parks, schoolyards, factories, small lawns etc.. 
2. Major features: 
1) using a pressure-activated multifunctional seal-ring to effectively prevent debris from clogging the sprinkler inside; 
2) a rubber cover on its top can protect it effectively from damage by vandalism; 
3) dirt on the extractable column will be removed quickly by automatic flush to ensure the sprinkler's reliable operation suitable for various working conditions; 
4) all the inside parts can be screwed off and taken out from the sprinkler's top for convenient maintenance & easy clean; 
5) with internal "seal-a-matic (SAM) " check-valve holds back "8 feet (2. 4 meters) " of elevation change to prevent erosion & puddle caused by low head drainage; 
6) the spray radius can be shortened by 25% of its nominal rating with the adjustment screw, also having the convenience of arc-adjustment from the sprinkler's top. 
3. Technical parameters: 
1) working pressure: 0. 17 ~ 0. 45 mpa. ; 
2) bottom connection: 3 / 4" female pipe threads ("npt") ; 
3) flow rate: 0. 11 ~ 1. 9 cubic-meter / hour; 
4) closed case's outside dimension: 165 mm. High; 
5) extractable column's pop-up height: 100 mm. ; 
6) spray radius: 7. 0 ~ 15. 2 meters.