Full Cone Spray Nozzle Guide: Types, Selection & Applications

A full cone spray nozzle distributes liquid throughout a filled circular or square impact area. It is a practical starting point when a stationary target needs broad wetting, washing, cooling, quenching or process-liquid distribution. Select the nozzle from the required flow, available pressure, spray angle, target distance, liquid condition, connection and material—not from the pattern name alone.

This guide explains the selection sequence for Jeltecn full cone nozzles. For current products and quotation support, go to the full cone spray nozzle category.

What Is a Full Cone Spray Pattern?

A full cone pattern fills the interior of the cone and creates a circular or shaped impact area. A round full cone suits circular targets or single-nozzle coverage. A square full cone can help organize coverage in a grid or header when nozzle orientation and spacing are controlled.

Pattern appearance alone does not confirm distribution quality. Pressure at the nozzle, flow, mounting distance, gravity, liquid properties, wear and blockage can all change the footprint. Verify critical installations under representative conditions.

Full Cone, Hollow Cone or Flat Fan?

See the hollow cone vs full cone comparison and flat fan vs full cone comparison when the pattern family is not decided.

Round and Square Full Cone Nozzles

Choose a round footprint when one nozzle must cover a circular target, vessel area or localized process zone. Choose a square footprint when several nozzles will be arranged across a rectangular area. A square pattern must be aligned consistently; incorrect rotation, spacing or overlap can create wet and dry zones.

The BB square full cone nozzle is the primary Jeltecn page for square-pattern selection.

Narrow-Angle and Wide-Angle Selection

Use the BBG narrow-angle full cone nozzle for the narrow-angle family and the wide-angle full cone nozzle for broad coverage. Values vary by model; use the technical table on the selected product page.

Seven Checks Before Choosing a Model

1. Define the process objective. State whether the nozzle must cool, rinse, quench, wet, distribute liquid or suppress dust.
2. Specify flow per nozzle. Divide the total process demand by the intended number of nozzles, then check the model table.
3. Confirm pressure at the nozzle. Pump discharge pressure is not necessarily the same as pressure after pipes, filters, valves and elevation losses.
4. Calculate the target footprint. Use spray angle and installation distance as a starting calculation, then allow for operating conditions.
5. Describe the liquid. Include composition, temperature, viscosity, specific gravity and suspended solids.
6. Confirm connection and material. Specify NPT or BSPT, male or female connection, installation space and required material.
7. Plan verification and maintenance. Define filtration, inspection access, cleaning method and an acceptable distribution check.

Flow, Pressure and Coverage

Nozzle capacity changes with pressure, but actual performance also depends on supply stability and pressure loss. Select from the published model table for water, then request review if the liquid differs materially from water.

A theoretical spray diameter is only a layout starting point, not proof of uniformity. Use the full cone spray distribution test when distribution matters.

Liquid, Material and Clogging Checks

Material suitability depends on the liquid and the surrounding environment. Standard product pages list available materials for each model family. Chemical compatibility, temperature and wear conditions should be reviewed before ordering.

If the liquid contains solids or creates deposits, compare particle conditions with the nozzle passage and filtration plan. A distorted pattern, falling flow or rising pressure differential may indicate blockage or wear. See the spray nozzle clogging and prevention guide.

Cooling and Quenching

Define heat load, target geometry, allowable temperature variation, water quality, installation distance and acceptable wetting uniformity. The nozzle is one component of the complete system. Use the full cone cooling and quenching checklist before finalizing a header.

Information to Include in an RFQ

• Application and required process result
• Required total flow and flow per nozzle
• Available pressure at the nozzle inlet
• Target dimensions and nozzle-to-target distance
• Liquid composition, temperature and suspended solids
• Connection standard and installation space
• Material requirement and operating environment
• Quantity, destination and drawing needs

Jeltecn is a registered brand of Melinco Precision Technology Co., Ltd. Send the operating conditions rather than only a reference model so the requested nozzle can be checked against the application.

Request a full cone nozzle selection review

Full Cone Nozzle FAQ

Is a full cone nozzle the same as a solid stream nozzle?

No. A full cone distributes droplets across an area. A solid stream concentrates liquid into a narrow jet.

Does a wider angle always reduce the number of nozzles?

No. A wider theoretical footprint may reduce nozzle count, but installation height, usable edge coverage, pressure and uniformity can change the final layout.

Can published water data be used for every liquid?

No. Viscosity, specific gravity, temperature and solids may change flow, atomization, material choice and maintenance requirements.

How should a full cone header be approved?

Confirm flow and pressure, calculate preliminary spacing, then check the installed distribution under representative operating conditions.