INDUSTRY COMPONENT

Duct Connector (Spigot)

A precision-engineered duct connector for secure, leak-resistant joining of ventilation ducts in industrial extraction systems.

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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
  • 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)
Standards
ISO 13349, DIN 24194, ASHRAE 120

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Duct Connector (Spigot).

duct connector spigot connector ventilation duct fitting extraction system component industrial ductwork airtight duct connection HVAC connector Duct Connector (Spigot) Duct Connector (Spigot) in Machinery and Equipment Manufacturing

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

Interchangeable Parts

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

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 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.

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.

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