Dispensing Nozzle/Needle: Temperature Range -20°C to 200°C

Component Specifications

Definition

A dispensing nozzle or needle is a precision-engineered component in coating dispensing systems that controls the flow, direction, and deposition pattern of adhesives, sealants, lubricants, or other fluids onto substrates. It functions as the terminal interface between the dispensing equipment and the workpiece, ensuring accurate material placement with minimal waste.

Working Principle

Operates by creating a controlled fluid path from the dispensing system's reservoir to the application point. Pressure or volumetric displacement forces material through the nozzle's orifice, where internal geometry (taper, diameter, length) determines flow characteristics, droplet formation, and pattern consistency. Laminar flow is maintained to prevent splatter and ensure uniform deposition.

Materials

Typically stainless steel (e.g., 303, 304, 316 for corrosion resistance), tungsten carbide for abrasion resistance, or PTFE/PEEK for chemical inertness. Hardness: HRC 45-60. Surface finish: Ra ≤ 0.4 μm to reduce friction and material adhesion.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	10 mm to 100 mm
Taper Angle	30° to 90°
Thread Type	M4, M6, 1/4-28 UNF
Max Pressure	10 MPa
Orifice Diameter	0.1 mm to 2.0 mm
Temperature Range	-20°C to 200°C

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

Standards

DIN 32676

Parent Products

This component is used in the following industrial products

Coating Dispensing System

A precision system that meters and delivers conformal coating materials to electronic components during automated coating processes.

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Engineering Analysis

Risks & Mitigation

Clogging due to material curing
Wear from abrasive fillers
Misalignment causing inconsistent coating
Chemical corrosion

FMEA Triads

Trigger: Material curing inside nozzle
Failure: Partial or complete blockage, erratic flow
Mitigation: Implement purge cycles, use compatible materials, maintain temperature control

Trigger: Abrasive particles in fluid
Failure: Orifice erosion, increased diameter, loss of precision
Mitigation: Use tungsten carbide nozzles, install inline filters, monitor wear rates

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Orifice diameter ±0.01 mm, concentricity within 0.02 mm

Test Method

Flow rate testing per ISO 2431, visual inspection under 10x magnification, pressure decay test

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Dispensing Nozzle/Needle

Manufacturer profiles associated with Dispensing Nozzle/Needle.

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Frequently Asked Questions

How do I select the right nozzle diameter for my application?

Choose based on material viscosity and desired bead size: smaller diameters (0.1-0.5 mm) for low-viscosity fluids and fine details; larger diameters (0.5-2.0 mm) for high-viscosity materials like pastes. Consider flow rate requirements and system pressure.

What maintenance is required for dispensing nozzles?

Regular cleaning with compatible solvents to prevent clogging, inspection for wear or damage at the orifice, and replacement when tolerances exceed ±5% of original diameter. Use ultrasonic cleaning for hardened residues.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Dispensing Nozzle/Needle