Garden Hose Flow Control, 0.5 gpm.

thingiverse

After working on these restrictor plates (http://www.thingiverse.com/thing:134294), I created an alternative version that screws directly onto the hose end (GHT = 1 1/16" x 11.5 TPI). The purpose of this plate is to regulate water flow at a rate of approximately half a gallon per minute for slow, efficient watering of trees. I preferred a gentle flow over high pressure. Version (_3) appears to function reasonably well. An updated version (_4) features fewer output holes for smoother flow and a reshaped exterior for better grip. To print, use two perimeters and around 20% infill. Drill the holes with a 1/16" bit, insert a garden hose washer, and attach to the hose.