Spray nozzles may seem small, but choosing the wrong one can lead to system failures, wasted water, poor coverage, and costly downtime. Each industry—from dust suppression to food processing—requires specific nozzle types, pressures, and materials.
This guide simplifies selection with clear, application-specific charts and expert tips to help you make the right choice the first time.
Why Nozzle Selection Matters
Choosing the right spray nozzle is 90% of system success. Whether you're dealing with dust suppression in mining or humidification in pharmaceuticals, the wrong nozzle leads to:
Water wastage
Equipment wear
Poor spray coverage
Increased maintenance
This guide offers clear, industry-specific recommendations to ensure you get the right nozzle — every time.
Nozzle Selection by Industry
1. Dust Suppression & Dust Cannon Systems
| Parameter | Specification |
|---|---|
| Nozzle Type | Hollow Cone / Full Cone Fog |
| Droplet Size | 20–50 microns (dry fog) |
| Operating Pressure | 20–70 bar |
| Preferred Material | SS316 / Ceramic |
| Filtration Required | Sand filter + 10–20 micron |
| Typical Applications | Mining, crushers, conveyors |
Selection Tip: Ceramic nozzles resist abrasion in outdoor environments and handle dirty water better.
2. Industrial Misting & Fogging Systems
| Parameter | Specification |
|---|---|
| Nozzle Type | Anti-drip Fog Nozzle |
| Droplet Size | 10–30 microns |
| Operating Pressure | 40–70 bar |
| Preferred Material | SS316 / Ceramic |
| Filtration Required | 5–10 micron |
| Typical Applications | Cooling, humidification, odor control |
Selection Tip: Use anti-drip valves to avoid residual mist after shutoff — essential in automated systems.
3. Cooling & HVAC Evaporative Systems
| Parameter | Specification |
|---|---|
| Nozzle Type | Fine Fog / Hollow Cone |
| Droplet Size | 10–25 microns |
| Operating Pressure | 50–70 bar |
| Preferred Material | SS316 |
| Filtration Required | 5 micron |
| Typical Applications | Warehouses, outdoor cooling |
Selection Tip: Droplet size matters more than flow rate for effective heat dissipation.
4. Irrigation & Agricultural Misting
| Parameter | Specification |
|---|---|
| Nozzle Type | Micro Sprayer / Misting Nozzle |
| Droplet Size | 40–200 microns |
| Operating Pressure | 1–5 bar |
| Preferred Material | UV-stabilized Plastic / SS304 |
| Filtration Required | Screen + Disc filter |
| Typical Applications | Greenhouses, nurseries, precision farming |
Selection Tip: Filter before selecting a micro-nozzle — debris kills coverage uniformity.
5. Industrial Washing & Cleaning Systems
| Parameter | Specification |
|---|---|
| Nozzle Type | Flat Fan / Solid Stream |
| Droplet Size | Coarse |
| Operating Pressure | 10–250 bar |
| Preferred Material | SS316 / Tungsten Carbide |
| Filtration Required | 50–100 micron |
| Typical Applications | Part washing, tank cleaning |
Selection Tip: Tungsten carbide nozzles last longer under high-pressure washing operations.
6. Chemical & Process Industry Spray
| Parameter | Specification |
|---|---|
| Nozzle Type | Full Cone / Hollow Cone |
| Droplet Size | Application-specific |
| Operating Pressure | 5–20 bar |
| Preferred Material | SS316 / PVDF / PTFE |
| Seal Material | Viton / PTFE |
| Typical Applications | Reactor spray, chemical dosing |
Selection Tip: Always check chemical compatibility — PTFE and PVDF handle aggressive media best.
7. Wastewater Treatment & Odor Control
| Parameter | Specification |
|---|---|
| Nozzle Type | Large Orifice Fog / Full Cone |
| Droplet Size | 30–80 microns |
| Operating Pressure | 10–40 bar |
| Preferred Material | Ceramic / PVDF |
| Filtration Required | Multi-stage filtration |
| Typical Applications | ETP, STP, odor neutralization |
Selection Tip: Go for large-orifice nozzles when dealing with inconsistent or dirty water.
8. Food, Beverage & Pharmaceutical Applications
| Parameter | Specification |
|---|---|
| Nozzle Type | Sanitary Full Cone / Hollow Cone |
| Droplet Size | Controlled fine spray |
| Operating Pressure | 5–30 bar |
| Preferred Material | SS316 (Food-grade) |
| Compliance | FDA / GMP compatible |
| Typical Applications | Cleaning, humidification, coating |
Selection Tip: SS316 is mandatory — avoid brass or plastic to ensure hygiene compliance.
Quick Cross-Industry Nozzle Selection Matrix
| Industry | Best Material | Pressure Range | Droplet Size |
|---|---|---|---|
| Dust Suppression | SS316 / Ceramic | 20–70 bar | 20–50 µm |
| Fogging & Cooling | SS316 | 40–70 bar | 10–30 µm |
| Irrigation | Plastic / SS304 | 1–5 bar | 40–200 µm |
| Washing | Carbide / SS316 | 50–250 bar | Coarse |
| Chemical | PTFE / PVDF / SS316 | 5–20 bar | Variable |
| Wastewater | Ceramic / PVDF | 10–40 bar | 30–80 µm |
Frequently Asked Questions
Q: What affects droplet size the most?
A: Pressure and orifice size. Higher pressure = finer droplets.
Q: Can I use the same nozzle across industries?
A: Not advisable. Each industry has specific needs for pressure, fluid type, and droplet control.
Q: How do I prevent nozzle clogging?
A: Use proper filtration — micron rating must match nozzle design specs.
Q: Is stainless steel always the best option?
A: No — use ceramic or plastic in abrasive or corrosive environments.