The Hunter Pro Adjustable Arc Nozzle is designed for irrigation zones where fixed-arc nozzles simply won't cut it — curved flowerbeds, narrow side yards, corner plantings, and any other area where a standard spray pattern wastes water on pavement or misses plants entirely. Available in 4-foot and 6-foot radius options, these compact nozzles are fully adjustable from 0° to 360°, giving you pinpoint control over where and how much water is delivered. No tools required — arc adjustment is fast and intuitive right in the field.
What makes the Hunter Pro Adjustable stand out is its engineering for accuracy. Unlike cheaper adjustable nozzles that produce a fine mist susceptible to wind drift, these nozzles emit larger-than-average water droplets that fall through the air with less evaporation and resist being blown off target. The result is more consistent, uniform coverage that behaves like a fixed nozzle — but with full flexibility. Both models deliver a matched precipitation rate of approximately 1.6 in/hr, making them easy to mix and match within the same zone without creating over- or under-watered spots. The nozzles are color-coded for quick field identification: light green for the 4' model (4A) and light blue for the 6' model (6A), with a female thread connection for standard spray body compatibility.
These nozzles are an ideal match for the Hunter Pro-Spray PRS30 Spray Body, which delivers a steady 30 PSI at the nozzle inlet — the exact recommended operating pressure for the Pro Adjustable series. If you're working with higher-flow zones or need broader coverage, explore our full range of spray nozzles and rotors. For a step up in water efficiency, the rotary nozzles in our nozzle category deliver slower application rates better suited to clay soils or sloped terrain.
| Specification | 4A (4' Radius) | 6A (6' Radius) |
|---|---|---|
| SKU | PONOZ4 | PONOZ6 |
| Hunter Model # | 4A | 6A |
| Radius | 4' (at 30 PSI) | 6' (at 30 PSI) |
| Adjustable Arc | 0° to 360° | 0° to 360° |
| Recommended Operating Pressure | 30 PSI | 30 PSI |
| Precipitation Rate | Approx. 1.6 in/hr | Approx. 1.6 in/hr |
| Color Code | Light Green | Light Blue |
| Thread Type | Female Thread | Female Thread |
| Tool Required for Adjustment | No — tool-free | No — tool-free |
| Brand | Hunter Industries | Hunter Industries |
What is the difference between the 4A and 6A models?
The only difference is the spray radius. The 4A covers up to 4 feet at the recommended 30 PSI operating pressure, while the 6A covers up to 6 feet. Both are adjustable from 0° to 360°, share the same precipitation rate of approximately 1.6 in/hr, and use female thread connections. Choose the 4A for very tight planting areas and close-spaced head layouts; choose the 6A for slightly larger beds and ground-cover zones.
Can I mix 4A and 6A nozzles in the same irrigation zone?
Yes. Because both models deliver a matched precipitation rate of approximately 1.6 in/hr, you can mix them within the same valve zone without creating uneven watering. This is one of the key design advantages of Hunter's Pro Adjustable line — head-to-head spacing and arc variation don't disrupt overall zone uniformity.
What operating pressure do these nozzles require?
The recommended operating pressure is 30 PSI at the nozzle inlet. If your system pressure is higher than this, we strongly recommend pairing these nozzles with a pressure-regulating spray body such as the Hunter Pro-Spray PRS30, which maintains a constant 30 PSI regardless of incoming line pressure. Running nozzles above the recommended pressure increases misting, reduces distribution uniformity, and can shorten the nozzle's effective life.
How do I adjust the arc without tools?
The top of the nozzle features an easy-grip cap that can be turned by hand. Rotate it to set your desired arc anywhere from 0° (a narrow stream) to a full 360° circle. No screwdriver or adjustment key is needed. This makes field setup and mid-season adjustments quick and easy — especially useful when plant growth changes the spray pattern needed in a bed.
What spray bodies are compatible with these nozzles?
These nozzles use a standard female thread and are compatible with any spray body that accepts a threaded nozzle. For best performance at the rated specifications, pair them with the Hunter Pro-Spray PRS30. DripWorks also carries a range of other compatible spray bodies from Rain Bird, Toro, K-Rain, and Irritrol if you need to match an existing system.
Are these nozzles suitable for windy conditions?
The larger water droplet size of the Pro Adjustable series makes it more wind-resistant than fine-mist nozzles. However, for applications in consistently windy environments, a very low trajectory or a drip alternative may be more effective. If wind drift is a recurring problem, consider switching higher-exposure areas to drip emitters or rotary nozzles, which apply water at a much slower rate with heavier droplets.
How do I identify which nozzle I have in the field?
Hunter color-codes the Pro Adjustable nozzles for easy identification: the 4A is light green and the 6A is light blue. This makes it simple to quickly audit a zone, confirm nozzle types, and replace individual nozzles as needed without running the system.
Can these nozzles replace existing nozzles on my spray heads?
In most cases, yes — provided your spray bodies accept standard female-threaded nozzles. The Pro Adjustable series is a straightforward retrofit for zones that currently use fixed-arc or other adjustable nozzles from Hunter, Rain Bird, Toro, or other major brands using the same thread standard. If you are unsure about compatibility, check your spray body's documentation or contact DripWorks at 1-800-522-3747.
Before you install, verify the following:
Pair your Hunter Pro Adjustable nozzles with these essential components for a complete, high-performing spray system:
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