Exit Orifice/Throat: Temperature Range -50°C to 500°C

Component Specifications

Definition

The exit orifice/throat is a critical flow control component in swirl chambers and vanes systems, designed to precisely regulate the discharge of fluids (liquids or gases) by creating a controlled constriction. This component converts rotational energy from the swirl chamber into linear momentum, optimizing flow characteristics for specific industrial applications. It features precisely machined geometry that determines flow rate, pressure drop, and dispersion patterns.

Working Principle

The exit orifice/throat operates on the Venturi principle, where fluid passing through a constricted section experiences increased velocity and decreased pressure. In swirl chamber systems, the component receives swirling fluid from the vanes and converts the rotational motion into axial flow while maintaining controlled turbulence. The precise geometry (diameter, length, taper angle) determines the final flow characteristics, including velocity profile, pressure recovery, and dispersion efficiency.

Materials

Stainless steel (AISI 316L/304), hardened tool steel (D2/A2), tungsten carbide, ceramic (alumina/zirconia), or engineered polymers (PEEK/PTFE) depending on application requirements. Surface finishes typically Ra 0.4-1.6 μm for optimal flow characteristics.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Taper Angle	0-45 degrees
Pressure Rating	Up to 1000 bar
Orifice Diameter	0.5-50 mm
Surface Roughness	Ra 0.4-1.6 μm
Temperature Range	-50°C to 500°C
Flow Coefficient (Cv)	0.01-10.0
Length To Diameter Ratio	0.5-3.0

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

Standards

ISO 5167, ISO 4401, DIN 1952, ASME B16.5

Parent Products

This component is used in the following industrial products

Swirl Chamber/Vanes

A component within a fuel nozzle that imparts a swirling motion to the fuel for improved atomization and combustion.

View Product Details

Engineering Analysis

Risks & Mitigation

Erosion from abrasive fluids
Cavitation damage
Thermal stress cracking
Corrosion in chemical environments
Clogging from particulate matter

FMEA Triads

Trigger: Abrasive particle impingement
Failure: Gradual erosion of orifice geometry leading to flow characteristic changes
Mitigation: Implement filtration systems, use wear-resistant materials (tungsten carbide), and establish regular inspection intervals

Trigger: Pressure fluctuations exceeding design limits
Failure: Cavitation damage and material fatigue
Mitigation: Install pressure regulators, design with adequate safety margins, and use materials with high fatigue resistance

Trigger: Chemical incompatibility
Failure: Corrosion and material degradation
Mitigation: Select chemically compatible materials, apply protective coatings, and implement corrosion monitoring systems

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.01 mm for diameter, ±0.5° for taper angles, surface finish within ±10% of specified Ra value

Test Method

Flow coefficient testing per ISO 5167, pressure testing per ASME BPVC, dimensional verification using CMM, surface roughness measurement per ISO 4287

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 Exit Orifice/Throat

Manufacturer profiles associated with Exit Orifice/Throat.

Sourcing Exit Orifice/Throat from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Seal Groove

Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

Frequently Asked Questions

What is the primary function of an exit orifice/throat in swirl chamber systems?

The primary function is to convert swirling fluid motion from the vanes into controlled axial flow while regulating velocity, pressure, and dispersion patterns for optimal system performance.

How does orifice geometry affect flow characteristics?

Diameter determines flow rate, length-to-diameter ratio affects pressure recovery, and taper angle influences flow separation and turbulence levels, all critical for specific application requirements.

What materials are suitable for corrosive fluid applications?

Stainless steel AISI 316L, Hastelloy, or ceramic materials provide excellent corrosion resistance for aggressive chemical environments.

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.

Exit Orifice/Throat