Spray Nozzle/Head

Product Specifications

Technical details and manufacturing context for Spray Nozzle/Head

Definition

The spray nozzle or head is the terminal component of a spray device responsible for breaking up liquid into droplets and controlling the spray pattern, flow rate, and distribution. It is the critical interface where liquid is transformed into a spray for applications such as coating, cleaning, cooling, or humidification. This directory entry covers generic spray nozzles and heads used in machinery and equipment manufacturing. The nozzle is a replaceable part that connects to a fluid supply line and is designed to produce a specific spray characteristic. Typical materials include stainless steel, brass, ceramic, and engineering plastics such as PTFE or PEEK. The choice of material affects chemical compatibility, wear resistance, and maximum operating temperature. Key parameters for selection include flow rate (0.5–5.0 L/min at 0.4 MPa), spray angle (60–120° full cone), droplet size (Sauter mean diameter 50–500 µm at 1.0 MPa), connection size (BSP thread 1/8–1 inch), operating pressure (1.0–1.6 MPa), maximum temperature (80–200 °C), and weight (0.05–0.5 kg). Surface finish (Ra 0.8–1.6 µm) is critical for clogging resistance. Flow rate tolerance is ±5% at reference pressure. These values are reference ranges and must be verified for the specific model and application. Standards such as ISO 5167, ISO 9276-2, ISO 228-1, ASTM A276, and ISO 1302 are referenced for measurement and verification, but do not imply certification or compliance of any particular product. Always confirm model-specific values and standards with the legal manufacturer or supplier.

Working Principle

Liquid under pressure is forced through a precisely engineered orifice in the nozzle. The geometry of the orifice and internal flow passages (e.g., swirl chambers, impingement surfaces) imparts kinetic energy, causing the liquid stream to destabilize and break apart into a fine spray of droplets upon exiting. The nozzle's internal design determines the spray pattern, droplet size distribution, and flow rate. For example, a swirl chamber induces rotational motion, enhancing atomization. The operating pressure must be within the specified range (1.0–1.6 MPa) to ensure proper atomization; deviation from it leads to poor spray quality. The nozzle is a passive component that relies on the upstream pump and pressure regulation. It does not require external power or control signals. The spray characteristics are influenced by liquid properties such as viscosity and surface tension, which are not specified here. The nozzle must be matched to the application requirements, including flow rate, spray angle, and droplet size. Regular inspection for wear, clogging, and surface finish degradation is necessary to maintain performance.

Common Materials

Stainless Steel, Brass, Ceramic, Engineering Plastic (e.g., PTFE, PEEK)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flow Rate	0.5–5.0 L/min	At 0.4 MPa pressureISO 5167
Spray Angle	60–120 °	Full cone angle
Droplet Size (Sauter Mean)	50–500 µm	At 1.0 MPaISO 9276-2
Connection Size	1/8–1 inch	BSP threadISO 228-1
Operating Pressure	1.0–1.6 MPa
Maximum Temperature	80–200 °C	Depends on material
Material	303, 316, 316L, 304	Stainless steel gradesASTM A276
Weight	0.05–0.5 kg	Per unit
Surface Finish	Ra 0.8–1.6 µm	Critical for clogging resistanceISO 1302
Tolerance on Flow Rate	±5 %	At reference pressureISO 5167

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Orifice Plate/Disc Part
Contains the precision orifice that meters and shapes the initial liquid stream.

Material: Stainless Steel, Ceramic
Swirl Chamber/Insert Part
Imparts a rotational velocity to the liquid, creating a hollow cone spray pattern.

Material: Stainless Steel, Plastic
Housing/Body Part
Provides structural integrity, connects to the fluid supply, and houses internal components.

Material: Brass, Stainless Steel, Plastic

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Spray Device

View system integration details

Manufacturers of Spray Nozzle/Head

Manufacturer profiles associated with Spray Nozzle/Head.

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Frequently Asked Questions

What materials are available for spray nozzles?

Common materials include stainless steel (grades 303, 316, 316L, 304), brass, ceramic, and engineering plastics such as PTFE or PEEK. The choice depends on chemical compatibility, temperature, and wear resistance. Always confirm material suitability with the manufacturer.

How do I select the correct spray angle?

The spray angle (full cone) typically ranges from 60° to 120°. The required angle depends on the coverage area and distance to the target. Consult the manufacturer's data for the exact angle for your model.

What standards are relevant for verification?

Standards such as ISO 5167 (flow measurement), ISO 9276-2 (particle size analysis), ISO 228-1 (pipe threads), ASTM A276 (stainless steel bars), and ISO 1302 (surface texture) are referenced. These are for verification purposes and do not imply certification. Always confirm compliance with the supplier.

Data Basis

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Preliminary Technical Classification

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pressure:	0.5 to 100 bar
flow rate:	0.1 to 100 L/min
temperature:	-20°C to 150°C
slurry concentration:	Up to 20% solids by weight

Product Specifications

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