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Orifice Plate/Disc Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

A thin, precisely manufactured plate or disc with a calibrated orifice hole that serves as the critical flow-controlling element in spray nozzle assemblies. It determines the flow rate, droplet size distribution, and spray pattern by creating a pressure drop as fluid passes through the restricted opening. The component is engineered to specific tolerance levels to ensure consistent performance in industrial spraying systems.

Working Principle

Operates on the principle of fluid dynamics where liquid or gas forced through a restricted orifice experiences a pressure drop, converting pressure energy into kinetic energy. This creates a high-velocity jet that breaks into droplets upon exiting, with the orifice geometry determining spray characteristics. The flow rate follows Bernoulli's principle and is calculated using the orifice equation Q = C_d * A * sqrt(2ΔP/ρ), where C_d is discharge coefficient, A is orifice area, ΔP is pressure differential, and ρ is fluid density.

Materials

Stainless steel (AISI 304, 316, 316L), brass (C36000), tungsten carbide, ceramic (alumina, zirconia), hardened tool steel, polypropylene, PTFE, PVDF. Material selection depends on chemical compatibility, abrasion resistance, temperature range, and pressure requirements.

Technical Parameters

Flatness 0.001mm per 25mm
Thickness 0.5mm to 3mm
Tolerance ±0.01mm to ±0.05mm
Surface Finish Ra 0.2μm to 0.8μm
Pressure Rating Up to 1000 bar
Orifice Diameter 0.1mm to 10mm
Temperature Range -40°C to 400°C
Flow Coefficient (Cv) 0.01 to 10.0

Standards

ISO 5167, DIN 1952, ASME MFC-3M, ISO 12238

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Orifice Plate/Disc.

Parent Products

This component is used in the following industrial products

Spray Nozzle

A precision component that atomizes and directs liquid into a controlled spray pattern.

View Product Details

Spray Nozzle/Head

A precision component that atomizes and directs liquid flow in spray systems.

View Product Details

Engineering Analysis

Risks & Mitigation

Orifice clogging from particulate contamination
Erosion/corrosion from abrasive or chemical fluids
Cavitation damage from excessive pressure drops
Improper installation causing leaks or misalignment
Thermal expansion/contraction affecting tolerances
Fatigue failure from pressure cycling

FMEA Triads

Trigger: Particulate contamination in fluid stream
Failure: Partial or complete orifice blockage
Mitigation: Install upstream filtration (10-25μm), implement regular maintenance schedules, use self-cleaning orifice designs

Trigger: Abrasive fluid components
Failure: Orifice enlargement and edge rounding
Mitigation: Select wear-resistant materials (tungsten carbide, ceramic), implement hardened coatings, design for easy replacement

Trigger: Excessive pressure differential
Failure: Cavitation erosion and material fatigue
Mitigation: Design within recommended pressure ranges, use multi-stage pressure reduction, implement pressure relief systems

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

ISO 2768-mK for general dimensions, ISO 8015 for geometrical tolerancing, orifice diameter tolerance typically ±0.01mm to ±0.05mm depending on application

Test Method

Flow rate testing per ISO 5167 using calibrated flow meters, dimensional verification with optical comparators or CMM, pressure testing per ASME B16.34, material certification per ASTM/EN standards

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What factors determine orifice plate selection for spray nozzles?

Key factors include required flow rate, operating pressure, fluid properties (viscosity, density, corrosiveness), desired droplet size, spray pattern (hollow cone, full cone, flat fan), material compatibility, temperature range, and wear resistance requirements.

How does orifice diameter affect spray performance?

Smaller diameters create higher pressure drops, finer droplets, and lower flow rates, while larger diameters produce coarser droplets, higher flow rates, and lower pressure requirements. The diameter directly impacts spray angle, penetration, and coverage area.

What maintenance is required for orifice plates?

Regular inspection for wear, erosion, corrosion, and clogging; cleaning with appropriate solvents; verification of dimensional tolerances; and replacement when flow characteristics deviate beyond acceptable limits (typically ±5-10% from specification).

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

Orifice Plate/Disc