Dramm - Pin-Perfect Overhead Irrigation Nozzle
Brand: Dramm
Pin-Perfect Overhead Irrigation Nozzle
A 360 degree overhead nozzle that threads into a PVC, aluminum or galvanized pipeline running above the bench, and the only one in Dramm's overhead range with a shut-off pin: push the pin down and that nozzle stops, pull it up and it runs again. That means a section of empty bench can be shut off from the aisle without valving the line or capping the port. Dramm builds it for foliage plants, bedding plants, geraniums and 4 to 6 in pot crops.
Colour is the orifice and the orifice is the flow rate, so the colour you order is a hydraulic decision, not a cosmetic one. At 22 psi: Brown 2.55 mm gives 0.74 gpm, Green 2.65 mm 0.82 gpm, Grey 2.75 mm 0.90 gpm, Blue 2.80 mm 0.95 gpm, Red 2.95 mm 1.03 gpm, Orange 3.05 mm 1.11 gpm and Black 3.25 mm 1.21 gpm. Spray diameter does not change with colour - every one throws 10 ft from a line 5 ft above the crop - so stepping up a colour buys volume without changing your layout. That is exactly how Dramm intends the range to be used: pick the flow that suits the crop for the head of the run, then step up one colour roughly every sixth nozzle down the pipeline to offset friction loss, so the far end delivers what the near end does. A real order is usually three or four colours of the same nozzle, not one. The 0.05 mm gap between Grey and Blue gives a fine trim in the middle of the range, which is where most 4 to 6 in pot crops sit.
Specifications
| Pattern | 360 degree, 10 ft diameter with the pipeline 5 ft above the crop; the same for every colour |
| Orifice by colour | Brown 2.55 mm; Green 2.65 mm; Grey 2.75 mm; Blue 2.80 mm; Red 2.95 mm; Orange 3.05 mm; Black 3.25 mm |
| Flow at 15 psi | Brown 0.61; Green 0.69; Grey 0.77; Blue 0.79; Red 0.87; Orange 0.90; Black 0.98 gpm |
| Flow at 22 psi | Brown 0.74; Green 0.82; Grey 0.90; Blue 0.95; Red 1.03; Orange 1.11; Black 1.21 gpm |
| Flow at 29 psi | Brown 0.85; Green 0.95; Grey 1.03; Blue 1.11; Red 1.21; Orange 1.29; Black 1.40 gpm |
| Flow at 36 psi | Brown 0.95; Green 1.08; Grey 1.17; Blue 1.27; Red 1.40; Orange 1.48; Black 1.60 gpm |
| Shut off | Push the pin down to close that nozzle, pull it up to open it |
| Spacing | 5 ft along the line and 10 ft between lines with the pipeline 5 ft above the crop |
| Reduced pattern | For a 7 ft diameter, lower the pipeline to 3 ft over the crop and space nozzles at 3 1/2 ft |
| Mounting | Topside of the pipeline, or on top of 1/2 in PVC risers |
| Thread | 3/8 Whitworth, shared with Dramm's Nifty and Misty Mist nozzles |
| Supplied | Individually or in 100 count bags |
Configurations
| Color and Orifice | Part number |
|---|---|
| Brown - 2.55 mm - 0.74 gpm at 22 psi | PPN-BR |
| Green - 2.65 mm - 0.82 gpm at 22 psi | PPN-GN |
| Grey - 2.75 mm - 0.90 gpm at 22 psi | PPN-GR |
| Blue - 2.80 mm - 0.95 gpm at 22 psi | PPN-BL |
| Red - 2.95 mm - 1.03 gpm at 22 psi | PPN-RD |
| Orange - 3.05 mm - 1.11 gpm at 22 psi | PPN-OR |
| Black - 3.25 mm - 1.21 gpm at 22 psi | PPN-BK |
Key Features
- Individual shut-off by pin, so nozzles over an empty section can be closed without valving the line
- Colour codes the orifice, so an installed run's flow pattern is readable from the aisle
- Seven steps from 2.55 to 3.25 mm, with a 0.05 mm step between Grey and Blue for fine trimming
- Same 10 ft pattern across all seven colours, so changing flow does not change the layout
- Fine enough steps to compensate friction loss by changing colour every sixth nozzle down a run
- 3/8 Whitworth thread shared with the rest of Dramm's overhead range, so ports and assembly inserts carry over
Ideal Applications
- Foliage plants
- Bedding plants and geraniums
- 4 to 6 in pot crops on benches
- Hanging nozzle assemblies dropped below the pipeline
- Moveable benching, mounted on Dramm Stix where overhead lines are impossible
Installs with Dramm's Assembly Insert, drill tap and pipe nipples, and is served by the colour-coded replacement pin, the 180 degree pin and the nozzle plug.
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