Duct Connector (Spigot): Diameter Range 100-1000mm

Component Specifications

Definition

A spigot-type duct connector is a mechanical component designed to create a secure, airtight connection between ventilation ducts in industrial extraction hoods and arms. It features a male spigot end that inserts into a female socket, typically secured with clamps or fasteners to ensure structural integrity and prevent air leakage. This component is critical for maintaining proper airflow, pressure balance, and contaminant capture efficiency in industrial ventilation systems.

Working Principle

The spigot connector operates on a mechanical interference principle where the male spigot end is inserted into a corresponding female socket. When properly aligned and secured with clamps or fasteners, it creates a compression seal that prevents air leakage. The connection maintains duct alignment, supports structural loads, and allows for thermal expansion/contraction while ensuring continuous airflow with minimal pressure drop.

Materials

Galvanized steel (SGCC, DX51D), stainless steel (304, 316), aluminum alloy (6061-T6), or polymer composites (PVC, PP) depending on application requirements. Thickness typically 0.8-2.0mm for metal versions.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	150-300mm standard
Leakage Class	L1 (≤1% leakage)
Diameter Range	100-1000mm
Surface Finish	Zinc-coated, powder-coated, or polished
Connection Type	Spigot-and-socket
Pressure Rating	Up to 2500 Pa
Temperature Range	-20°C to 150°C (material dependent)

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 13349, DIN 24194, ASHRAE 120

Parent Products

This component is used in the following industrial products

Extraction Hood/Arm

A flexible or fixed component that captures and directs fumes, vapors, or particulates at their source within a fume extraction system.

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Engineering Analysis

Risks & Mitigation

Improper installation leading to air leakage
Material corrosion in aggressive environments
Fatigue failure from vibration
Thermal expansion mismatch
Contamination buildup at connection points

FMEA Triads

Trigger: Insufficient clamping force
Failure: Air leakage, reduced extraction efficiency
Mitigation: Use torque-controlled fasteners, implement installation verification procedures

Trigger: Corrosive environment exposure
Failure: Material degradation, structural weakness
Mitigation: Select corrosion-resistant materials, apply protective coatings, implement inspection schedules

Trigger: Vibration from connected equipment
Failure: Fatigue cracking, connection loosening
Mitigation: Install vibration dampeners, use locking fasteners, implement regular maintenance checks

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1mm diameter, ±0.5mm roundness, ±2° angular alignment

Test Method

ISO 5801 for airflow performance, EN 12237 for leakage testing, ASTM E84 for fire resistance

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 Connector (Spigot)

Manufacturer profiles associated with Duct Connector (Spigot).

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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 difference between spigot and flange duct connectors?

Spigot connectors use a male-female insertion method with external clamping, while flange connectors use flat mating surfaces with bolt-through fastening. Spigot connectors are generally faster to install and better for moderate pressure applications.

How do I ensure an airtight seal with spigot connectors?

Use proper gaskets or sealing tape at the interface, ensure clean mating surfaces, apply correct clamping torque, and verify alignment before final tightening. Regular inspection for wear or deformation is recommended.

Can spigot connectors handle high-temperature applications?

Yes, when manufactured from appropriate materials like stainless steel (up to 800°C intermittent) or specialized alloys. Standard galvanized steel is suitable for temperatures up to 200°C continuous.

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 Connector (Spigot)