The Inverted Mini-Wobbler is a Senninger®-engineered overhead sprinkler designed to mount upside-down on your greenhouse, hoop house, or high-tunnel mainline. Its single rotating, wobbling deflector breaks water into a fine, uniform spray that's ideal for seed propagation, container watering, and cooling animal arenas. Because the head hangs inverted above the growing area, it delivers instant, even coverage the moment the system turns on, without the soil splash common to harder overhead jets. Pair it with the optional Senninger Drain Stop Plus™ anti-drip device — available right on this page as the "Mini-Wobbler Anti-Drip" configuration — to stop post-cycle dripping that can wash out delicate seedlings.
Choose between two nozzle colors to match your flow needs: the Gold nozzle delivers 66–75 GPH across a 34–34.5 ft spray diameter, while the Beige nozzle delivers a gentler 45–50.4 GPH across a 32–32.5 ft diameter (both measured 6 ft above the bed). The sprinkler connects via a 1/2" Male Pipe Thread (MPT) base — not garden hose thread — and runs best at 20–25 PSI. If your supply pressure runs higher, add a pressure regulator to protect spray uniformity. For ground-level nursery bed or field watering instead of overhead mounting, see our standard upright Mini-Wobblers.
Detailed specifications for system planning.
| SKU | Nozzle Color | GPH @ 20 PSI | Diameter @ 20 PSI* | GPH @ 25 PSI | Diameter @ 25 PSI* |
|---|---|---|---|---|---|
| MWIG | Gold | 66 GPH | 34 ft | 75 GPH | 34.5 ft |
| MWIBG | Beige | 45 GPH | 32 ft | 50.4 GPH | 32.5 ft |
*Diameter measured 6 ft above the bed. Specifications per Senninger® (a Hunter Industries company).
| Sprinkler Specification | Details |
|---|---|
| Inlet Thread | 1/2" Male Pipe Thread (MPT) |
| Operating Pressure | 20 – 25 PSI |
| Droplet Size | Medium, fine and uniform |
| Ideal Use | Container watering and seed propagation in greenhouses, hoop houses, or under shade cloth |
| Brand | Senninger® (a Hunter Industries company) |
| Warranty | 2 years on materials, workmanship, and performance; 5-year nozzle orifice warranty |
| Anti-Drip Device (MWANTI) | Details |
|---|---|
| Manufacturer Name | Senninger® Drain Stop Plus™ |
| Connection | 1/2" Male Pipe Thread (MPT) inlet x 1/2" Female Pipe Thread (FPT) outlet |
| Minimum Opening Pressure | 22 PSI |
| Minimum Closing Pressure | 6.5 PSI |
| Flow Range | 0.25 to 5 GPM |
| Design | 3-mode dial: open, check, and closed |
Step 1: Choose Your Configuration
Select either the Beige or Gold nozzle wobbler above, and add the "Mini-Wobbler Anti-Drip" option to your order if you want post-cycle drip protection.
Step 2: Mount It Overhead
Thread the 1/2" MPT base into a 1/2" FPT drop fitting, tee, or riser on your overhead mainline so the sprinkler hangs upside-down above the area to be watered.
Step 3: Add the Anti-Drip Device (Optional)
If you ordered the Anti-Drip configuration, thread it between your overhead supply line and the wobbler so it sits closest to the mainline, with the wobbler threaded onto its outlet.
Step 4: Set Your Pressure
Confirm your system delivers 20–25 PSI at the sprinkler. If your supply runs higher, install a pressure regulator upstream to protect spray uniformity and nozzle life.
What's the difference between the Gold and Beige nozzle?
The Gold nozzle delivers a higher flow of 66–75 GPH across a 34–34.5 ft diameter, while the Beige nozzle delivers a gentler 45–50.4 GPH across a 32–32.5 ft diameter.
Choose Gold for larger zones or faster cycle times, and Beige for tighter spacing or more water-sensitive crops.
Do I need the anti-drip device, and how do I order it?
It's recommended for most greenhouse setups, since it prevents heavy post-cycle dripping that can wash out seedlings below. Select "Mini-Wobbler Anti-Drip" from the configuration menu above to add it to your order.
The device threads in between your overhead supply line and the wobbler (1/2" MPT inlet x 1/2" FPT outlet) and opens at 22 PSI, closing at 6.5 PSI once the system shuts down.
What's the maximum recommended operating pressure?
This sprinkler is designed to run between 20 and 25 PSI.
Running it above this range can produce excessive misting and uneven distribution, so use a pressure regulator if your supply line runs higher.
Can I use this sprinkler right-side up instead of inverted?
This model is built and performs best mounted upside-down for overhead greenhouse watering.
For ground-level nursery bed or field applications, choose the standard upright Mini-Wobbler instead, which is designed for that orientation.
Please note the requirements for this component:
Ensure your overhead watering zone is protected and ready to run with these recommended products:
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