Hollow Cone Spray Nozzles

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1029 Products

Hollow Cone Spray Nozzles for High-Impact Ring-Pattern Spray

Hollow cone nozzles create a ring-shaped spray that excels in gas scrubbing, quenching, and processes requiring intense droplet-to-gas contact.

Hollow cone spray nozzles create a circular ring pattern where droplets spray the outer perimeter while leaving the center open. This unique pattern maximizes surface area exposure and air entrainment, producing fine atomization ideal for evaporative cooling, dust suppression, and gas treatment applications.

NozzlePro hollow cone nozzles are available in two primary designs:

Tangential Hollow Cone Nozzles: Liquid enters tangentially into a swirl chamber, creating rotation that produces the hollow cone pattern. Offers finest atomization with smallest droplet sizes. Preferred for humidification, evaporative cooling, and applications requiring maximum surface area.

Axial Hollow Cone Nozzles: Liquid flows through internal vanes that create rotation. Larger internal passages resist clogging. Better for fluids with particulates and applications where durability outweighs atomization fineness.

Common hollow cone nozzle uses include:
- Dust suppression in mining and material handling
- Evaporative cooling and gas conditioning
- Fire suppression and deluge systems
- Gas scrubbing and pollution control
- Humidification systems
- Chemical processing and reaction cooling

Spray Pattern Hollow Cone

Available SKUs 1029 Products

Quality Industrial Grade

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How Hollow Cone Spray Nozzles Work

Liquid exits through a grooved insert or tangential inlet, forming a spinning hollow cone with high-velocity droplets at the perimeter.

Operating Principle

Hollow cone spray nozzles create their characteristic ring-shaped spray pattern through centrifugal force. Liquid enters the nozzle and is forced into rotation, either through tangential entry or internal vanes. As the spinning liquid exits the orifice, centrifugal force pushes droplets outward, forming a hollow cone pattern with an empty center.

Hollow Cone Spray Pattern Characteristics:

• Pattern Shape: Ring or donut pattern with an empty center.
• Droplet Size: Fine to very fine droplets, typically smaller than full cone spray patterns.
• Air Entrainment: High air entrainment promotes evaporation and gas mixing.
• Coverage: Spray concentrates on the outer perimeter at close range but fills in at longer distances.
• Spray Angles: Typically available between 60° and 120° depending on nozzle design.

Why Choose Hollow Cone Pattern

The hollow cone spray pattern is commonly selected when fine atomization and efficient mixing are required.

• Fine Atomization: Produces small droplets without requiring compressed air systems.
• Air Entrainment: High entrainment helps improve evaporation and gas contact in process systems.
• Wide Coverage with Low Flow: Fine droplets allow small liquid volumes to cover large areas.
• Controlled Drift Behavior: Fine droplets remain suspended longer, supporting cooling and gas scrubbing processes.

Hollow Cone vs Full Cone Comparison

Key differences between hollow cone and full cone spray patterns:

• Pattern: Hollow cone creates a ring pattern with an empty center; full cone fills the entire circular spray area.
• Droplet Size: Hollow cone produces finer droplets; full cone produces medium droplets.
• Air Entrainment: Hollow cone provides higher air entrainment; full cone produces lower entrainment.
• Coverage: Hollow cone focuses on perimeter coverage; full cone provides complete circular coverage.
• Typical Applications: Hollow cone nozzles are preferred for cooling, dust suppression, and gas contact processes, while full cone nozzles are commonly used for washing, tank cleaning, and fire protection.

Hollow Cone Nozzle Applications

These Nozzles perform best in gas absorption towers, venturi scrubbers, cooling towers, and high-pressure washing systems.

Cleaning & Washing

Support rinsing, washdown, parts cleaning, and surface cleanup with coverage and impact matched to the soil load and line speed.

Cooling & Quenching

Control part temperature and process heat with spray coverage sized for the required cooling rate and heat removal.

Humidification & Conditioning

Produce droplets suited to humidity control, evaporative conditioning, and air treatment tasks.

Dust & Pollution Control

Capture airborne dust, cool gas streams, and suppress fugitive emissions with the right droplet size and coverage.

Hollow Cone Nozzle Selection Guide

Match cone angle, flow rate, and droplet size to your scrubbing efficiency targets and available operating pressure.

Flow Rate & Pressure

Start with the flow rate you need at the operating pressure available at the nozzle or assembly.

Spray Pattern & Coverage

Choose the hollow cone spray pattern that best matches the coverage width, impact, atomization, or washdown result your process requires.

Materials & Connections

Select wetted materials compatible with the fluid, temperature, and wear conditions; common options may include 316L stainless steel, brass, 303/304 stainless steel, and polypropylene; common sizes include 3/8 in., 1/4 in., 1/8 in., and 1/2 in. with NPT connections where available.

Maintenance & Reliability

Consider clogging risk, wear life, ease of change-out, and the maintenance routine your process can realistically support.

Industries Using Hollow Cone Nozzles

Chemical processing, power generation, steel, and environmental control industries rely on hollow cone nozzles for gas-liquid contact.

Hollow Cone Spray Nozzles are commonly used in Automotive, Building Materials, and Chemical Processing.

Final selection usually comes down to process chemistry, utility availability, maintenance practices, and the amount of coverage, impact, or atomization the application requires.

Automotive Building Materials Chemical Processing Energy & Power Generation Mining Steel & Metals Cement

Hollow Cone Nozzle FAQ

Answers to common questions about hollow cone nozzle sizing, spray angle selection, and maintenance best practices.

What are hollow cone nozzles used for?

Hollow cone nozzles are used in applications requiring fine atomization and maximum air contact. Typical uses include dust suppression where fine droplets capture airborne particles without over-wetting surfaces; evaporative cooling where high droplet surface area improves heat transfer; fire protection systems where fine spray absorbs heat from flames and hot gases; gas scrubbing where droplet surface area maximizes gas-liquid contact; and humidification systems where fine mist evaporates quickly without surface wetting.

What is the difference between hollow cone and full cone nozzles?

Hollow cone nozzles produce a ring-shaped spray pattern with an empty center and generate finer droplets with greater air entrainment. They are commonly used for cooling, dust suppression, humidification, and gas treatment where evaporation and air contact are important. Full cone nozzles produce a solid circular spray pattern with complete coverage and larger droplets, making them better suited for washing, rinsing, tank cleaning, fire suppression, and applications requiring full surface coverage.

What hollow cone nozzles are used for fire suppression?

Hollow cone nozzles are used in fire suppression systems such as deluge systems, water mist fire protection, and cooling systems. They generate fine droplets that absorb heat rapidly from flames and hot gases, create steam that helps displace oxygen, and cool surrounding structures and equipment. When selecting fire protection nozzles, choose models rated for the required flow rate, coverage area, and K-factor, and use stainless steel construction for corrosion resistance and durability.

How do I select between tangential and spiral hollow cone nozzles?

Tangential hollow cone nozzles produce the finest atomization and smallest droplets, making them ideal for humidification, evaporative cooling, and gas contact processes, but they are more susceptible to clogging and require clean fluids. Spiral hollow cone nozzles have larger internal passages that resist clogging and are better suited for fluids containing particulates or debris. They produce slightly coarser atomization and are commonly used for dust suppression, industrial washing, and other heavy-duty applications.