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Author: Site Editor Publish Time: 11-06-2025 Origin: Site
Flat fan nozzles are precision spraying devices widely used in industrial, agricultural, and cleaning fields. Their core function is to evenly spray liquid into a fan-shaped mist, thereby achieving efficient coverage and precise operation. Compared with traditional conical nozzles, flat fan nozzles can form a wide and uniform liquid coverage area in the horizontal or vertical direction, making liquid distribution more even and reducing blind spots and liquid waste.
These nozzles are typically made of high-strength metal or corrosion-resistant plastic, capable of withstanding operational requirements under different pressures. Their spray angle and flow rate can be adjusted according to specific applications, enabling flexible use from small-area precise coating to large-area coverage. The working principle of flat fan nozzles is based on liquid being ejected at high speed through a narrow opening inside the nozzle, forming a fan-shaped jet, with the spray pattern controlled by the liquid's kinetic energy and the nozzle's geometric structure.
In the industrial field, flat fan nozzles are commonly used in scenarios such as equipment cooling, surface cleaning, chemical liquid coating, and dust suppression. In agriculture, they are used for crop irrigation, pesticide spraying, and fertilizer application. Compared with other nozzle types, flat fan nozzles have the following advantages:
- Uniform spray: They ensure even distribution of liquid on the working surface or operation area, avoiding excessive or insufficient liquid in local areas.
- Wide coverage: Through different spray angle designs, they can cover operation areas of varying widths, meeting the needs of large-area operations.
- Precise flow control: Flow rate can be adjusted according to pressure and opening size, enabling refined operations.
- Strong adaptability: Suitable for various types of liquids, including clean water, chemical liquids, and solutions containing particles.
- Resource-saving: Due to uniform and controllable spraying, liquid waste and secondary spraying are reduced, improving operational efficiency.
Overall, flat fan nozzles are not only spraying tools but also important equipment in modern industrial and agricultural operations for improving efficiency, reducing costs, and ensuring quality.
Standard flat spray nozzles are the most common type of flat fan nozzle, with a design core focused on forming a uniform and stable fan-shaped spray. These nozzles are typically made of corrosion-resistant materials such as stainless steel, polypropylene, or ceramic to meet the spraying requirements of different liquid media. They can achieve a large coverage area while maintaining spray accuracy, making them a fundamental nozzle type in industrial cleaning, agricultural irrigation, and cooling operations.
Standard flat spray nozzles usually have a fixed spray angle (generally selectable between 25° and 80°), ensuring even distribution of the liquid along the fan shape. With a wide flow rate range, they can meet needs from small-scale precision spraying to large-area liquid coverage. The droplet size is uniform, and the liquid impact force during spraying is moderate, ensuring cleaning or cooling efficiency while avoiding damage to surfaces or crops.
Application Scenarios
Industrial Cleaning: Suitable for cleaning production line equipment, conveyor belts, molds, or mechanical surfaces.
Agricultural Irrigation: Can achieve uniform irrigation of crop leaves or soil surfaces, improving water utilization efficiency. Suitable for various crops, including vegetables and fruit trees.
Industrial Cooling: Used to cool metal processing equipment or high-temperature process stages, ensuring stable equipment temperature and preventing overheating.
Painting and Coating: In processes such as paint spraying, chemical liquid coating, or anti-corrosion treatment, standard flat spray nozzles can ensure uniform coating thickness and reduce material waste.
Wide-angle flat spray nozzles cover a larger spray area by increasing the spray angle (typically 65°~120°). The nozzle material is similar to standard flat nozzles and can be made of stainless steel, polypropylene, or wear-resistant ceramic, adapting to various liquid media. Wide-angle nozzles are mainly used in scenarios requiring uniform spraying over large areas. Their spray pattern is fan-shaped, with uniform droplets and wide coverage, which can effectively reduce the number of operations and improve work efficiency.
They have a wide spray angle and large coverage area, but the flow rate at a single point is slightly lower. The droplet size is moderate, ensuring uniform liquid distribution during spraying and avoiding spray dead zones. Pressure and flow rate can be adjusted according to operational needs to achieve different working modes.
Application Scenarios
Industrial floor cleaning: Suitable for large-area flushing of factory workshop or warehouse floors, reducing cleaning frequency and labor costs.
Agricultural field irrigation: Used for uniform irrigation of vegetables, field crops, and fruit trees, improving irrigation efficiency.
Spraying and coating: When covering large-area objects, such as painting panels or applying protective coatings, it can achieve uniform spraying.
Narrow-angle flat nozzles have a small spray angle (typically 15°~40°), resulting in concentrated spray and pressure, making them suitable for applications requiring high precision. The nozzle materials are also corrosion-resistant or wear-resistant, ensuring long-term stable operation. While narrow-angle nozzles have a limited spray range, they deliver strong spray impact and uniform droplet size, enabling precise spraying.
Small spray angle, concentrated liquid flow, and uniform pressure distribution.
Dense droplets, suitable for targeted spraying, cooling, or cleaning.
Enables high-precision spraying, reducing liquid waste.
Application Scenarios
Spot Coating: Achieve precise coverage in spray painting or chemical coating operations.
Precision Cooling: Used for localized cooling in machining, mold making, or semiconductor equipment.
Industrial Precision Cleaning: Suitable for cleaning specific parts, conveyor belts, or critical components of equipment.
High-pressure flat nozzles are designed for high-pressure operations, capable of withstanding significant liquid pressure while maintaining spray stability. They are commonly used in high-intensity scenarios such as industrial cleaning, cooling, and surface treatment. The nozzle materials are pressure-resistant and wear-resistant, such as stainless steel or high-hardness ceramics, ensuring they are not easily damaged during long-term high-pressure operation.
The spray pressure is high, resulting in strong liquid impact force, which can quickly remove dirt or cool high-temperature components. The spray is uniform, and the droplet size can be adjusted according to pressure to meet different operational requirements. They can match different pipeline pressures to enable flexible operations.
Application Scenarios:
Industrial equipment deep cleaning: Cleaning stubborn stains in metal processing equipment, conveyor belts, or molds.
High-temperature cooling: Used for efficient cooling in metal processing, heat treatment, or chemical equipment.
High-pressure spraying operations: Suitable for uniform spraying of thick coating materials to ensure coverage effect.
Anti-clogging flat nozzles prevent clogging of spray holes by optimizing internal structural design, effectively stopping solid particles in liquids from blocking the orifices and maintaining stable spraying. They are suitable for agricultural fertilization, spraying of liquid containing particles, or industrial wastewater. The materials are mostly wear-resistant plastics or stainless steel, ensuring long-term use without easy wear or clogging.
Internal flow channels are optimized to reduce liquid stagnation and deposition.
They can handle liquids with particles, maintaining uniform fan-shaped spraying.
The flow rate is stable, spraying is continuous, and jet interruption is unlikely.
Application scenarios
Agricultural fertilization: When liquid fertilizers or pesticides contain particles, it ensures uniform spraying without clogging.
Industrial wastewater treatment: Spraying liquids with suspended solid particles to avoid equipment clogging.
Cleaning and cooling: Suitable for cleaning liquids with many particles or impurities, ensuring continuous operation.
When selecting flat fan nozzles, a comprehensive consideration of spray effect, working environment, and liquid properties is required, with the main principles as follows:
Matching Spray Angle to Job Requirements
The spray angle of flat fan nozzles typically ranges from 15° to 110°. Small-angle nozzles are suitable for precise spraying or high-pressure flushing, while large-angle nozzles are ideal for large-area coverage and uniform misting. When selecting, determine the coverage range and spray distance based on the job scenario to ensure that the mist does not overlap or miss any areas.
Matching Flow Rate with Job Area
Different nozzles have varying flow rates under the same pressure. Selection should be based on the liquid application rate and job area. For large-area jobs, nozzles with larger flow rates and wider spray patterns are suitable; for small-area or localized jobs, nozzles with smaller flow rates and focused spray patterns can be chosen.
Pressure Requirements and Spray Effect
The operating pressure of flat fan nozzles directly affects the spray distance and impact force. High-pressure nozzles are suitable for cleaning hard surfaces or deep cooling, while low-pressure nozzles are appropriate for gentle tasks such as crop spraying and surface coating.
Liquid Properties and Anti-Clogging Design
If the liquid contains particles or sediments, anti-clogging or wear-resistant nozzles should be selected to ensure long-term use without clogging while maintaining uniform misting.
Material and Corrosion Resistance
Choose nozzles made of appropriate materials based on the liquid properties. For example, stainless steel is suitable for liquids requiring corrosion resistance and high pressure resistance, while engineering plastics are suitable for lightweight and cost-sensitive applications.
Job Efficiency and Maintenance Convenience
In industrial production or large-scale agricultural operations, the convenience of nozzle replacement and maintenance should also be considered. Selecting nozzles that can be quickly installed, replaced, or cleaned can reduce downtime and improve job efficiency.
Flat fan nozzles, as commonly used spraying tools in industry and agriculture, hold value not only in terms of liquid coverage and spray efficiency but also in their ability to provide customized solutions for different scenarios. From standard to high-pressure types, narrow-angle to wide-angle, and anti-clogging models, each nozzle is optimized for specific operational requirements.
By selecting the appropriate nozzle type and parameters, enterprises can significantly enhance production efficiency, conserve liquid resources, reduce operating costs, while ensuring stable spray quality to meet high-efficiency, safe, and environmentally friendly operation standards.
If you wish to find the most suitable flat fan nozzle type based on your production or operational needs, or require customized nozzle solutions, please contact Xinhou. Our professional team will provide expert guidance, supporting your industrial or agricultural applications comprehensively from nozzle selection, performance optimization to installation and maintenance, ensuring efficient operation.
