The Hunter 533 Adjustable Flood Bubbler delivers flexible, tool-free water control for targeted irrigation. Designed for trees, shrubs, planters, and flower beds, it provides a precise and adjustable flow range for consistent watering performance.
With a simple twist-top adjustment, users can easily fine-tune both the flow rate and arc by hand — no tools required. It operates smoothly from 1.36 to 5.90 GPM (5.14–22.33 L/min) across pressures of 20–40 psi, and features a true zero-flow shut-off for easy maintenance without system shutdown.
Constructed from heavy-duty ABS plastic, the Hunter 533 ensures long-term durability and UV resistance in demanding outdoor environments.
Technical Specifications
| Brand |
Hunter |
| Model |
533 |
| Product Type |
Adjustable Flood Bubbler |
| Inlet Size |
½″ Female NPT threads |
| Flow Rate Range |
1.36–5.90 GPM (5.14–22.33 L/min) |
| Recommended Pressure |
20–40 psi (138–276 kPa) |
| Maximum Operating Pressure |
75 psi (517 kPa) |
| Adjustment Type |
Manual twist-top, tool-free |
| Shut-Off Feature |
True zero-flow shut-off for maintenance |
| Arc & Flow Adjustability |
Fully adjustable |
| Material |
Heavy-duty ABS plastic |
| Applications |
Planters, shrubs, trees, and garden beds |
| Mounting |
Fits ½″ risers or adapters |
| Warranty |
Not specified |
Key Benefits
- Tool-free twist adjustment for fast, easy flow control
- True zero-flow shut-off for safe maintenance
- Fully adjustable arc and flow range for flexible watering
- Operates from 1.36–5.90 GPM at 20–40 psi
- Durable ABS construction for long service life
- Ideal for precise watering of planters, trees, and shrubs
Compare Alternatives
| Feature |
Hunter 533 Adjustable Bubbler |
Hunter PCN Bubbler |
Generic Bubbler |
| Flow Range |
1.36–5.90 GPM |
0.25–2.0 GPM |
1.0–3.0 GPM |
| Pressure Range |
20–40 psi |
15–40 psi |
15–30 psi |
| Inlet Size |
½″ NPT Female |
½″ NPT Female |
½″ BSP Female |
| Flow Adjustment |
Manual twist |
Pressure-compensating |
Manual screw |
| True Shut-Off |
Yes |
No |
No |
| Material |
ABS |
ABS |
PVC |
| Arc Adjustability |
Yes |
Limited |
No |
| Tool-Free |
Yes |
No |
No |
Frequently Asked Questions
What is the flow rate range?
It operates between 1.36 and 5.90 GPM (5.14–22.33 L/min).
What pressure should I use?
Recommended pressure is between 20 and 40 psi (138–276 kPa).
Does it have a shut-off feature?
Yes, it features true zero-flow shut-off for convenient maintenance.
Can I adjust it by hand?
Yes, the twist-top allows for easy, tool-free adjustment of flow and arc.
What material is it made from?
Heavy-duty UV-resistant ABS plastic for long-lasting durability.
Where can it be used?
Perfect for planters, trees, shrubs, and garden beds requiring precise watering.
Does it fit standard risers?
Yes, it connects to standard ½″ NPT female risers and adapters.
Is it pressure-compensating?
No, the flow is manually adjusted using the twist-top.
