Duct Connection Collar: Diameter Range 100-1000 mm

Component Specifications

Definition

A duct connection collar is a precision-engineered component designed to connect two sections of ductwork in industrial ventilation and exhaust systems. It typically consists of a cylindrical or rectangular sleeve with flanges, gaskets, and fastening mechanisms to create a sealed, rigid joint that prevents air leakage, maintains pressure integrity, and allows for thermal expansion and vibration dampening in systems like hood capture inlets.

Working Principle

The collar works by mechanically clamping or bolting two duct ends together using flanges, with sealing gaskets compressed between surfaces to create an airtight barrier. It maintains alignment, transfers mechanical loads, and accommodates minor misalignments while ensuring smooth airflow with minimal turbulence or pressure drop.

Materials

Galvanized steel (common), stainless steel (for corrosive environments), aluminum (lightweight applications), with EPDM or silicone gaskets for sealing.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flange Type	Slip-on, weld-on, or angle ring
Leakage Class	L1 (EN 1507)
Diameter Range	100-1000 mm
Pressure Rating	Up to 2500 Pa
Temperature Range	-20°C to 120°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

ISO 5801, DIN 24194, ASHRAE 120

Parent Products

This component is used in the following industrial products

Hood (Capture Inlet)

The intake opening of an extraction hood/arm designed to capture and contain airborne contaminants at their source.

View Product Details

Engineering Analysis

Risks & Mitigation

Air leakage if improperly installed
Corrosion in humid environments
Vibration-induced fatigue failure

FMEA Triads

Trigger: Incorrect gasket installation
Failure: Air leakage leading to reduced system efficiency
Mitigation: Use proper gasket materials, follow torque specifications during assembly, and conduct pressure tests post-installation.

Trigger: Material corrosion from chemical exposure
Failure: Structural weakening and potential collapse
Mitigation: Select corrosion-resistant materials like stainless steel, apply protective coatings, and implement regular inspection schedules.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1 mm on diameter, ±0.5 mm on flange flatness

Test Method

Pressure decay test per ISO 5801, visual inspection for defects, and dimensional verification using calipers

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 Duct Connection Collar

Manufacturer profiles associated with Duct Connection Collar.

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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

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Frequently Asked Questions

What is the purpose of a duct connection collar in a hood system?

It securely joins duct sections at the hood capture inlet, ensuring airtight connections to maintain airflow efficiency, prevent contamination, and reduce energy loss in ventilation systems.

How do I select the right duct connection collar?

Consider duct size, material compatibility, pressure requirements, temperature range, and industry standards like ISO or DIN to ensure proper fit and performance in your specific application.

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.

Duct Connection Collar