Coupling (muff) SpiroFlex MF D-160 — SpiroFlex M160-OC for duct connection D‑160

The SpiroFlex MF D-160 coupling (muff) is designed for joining round ventilation ducts with a nominal diameter of 160 mm. The M160-OC model creates a secure mechanical connection between spiral or rigid sheet metal duct sections, helping to maintain alignment and airflow continuity in HVAC systems for residential and commercial buildings. The component is intended for simple integration into existing duct lines and reduces the need for additional sealing or complex fittings when used with compatible duct ends.

Advantages

The SpiroFlex coupling offers a stable mechanical join that preserves duct alignment and reduces installation time. Its design accommodates standard 160 mm round ducts and provides a robust connection suitable for repeated assembly and disassembly if maintenance is required. The coupling supports consistent airflow characteristics across the joint and helps to limit gaps that could cause air leakage when installed according to typical ventilation practice.

Suitable for

• Connecting spiral or rigid round metal ducts with 160 mm nominal diameter
• HVAC ventilation and air distribution systems in residential properties
• Commercial ventilation installations where round ducts are used
• Field repairs or replacements of 160 mm duct sections

Key specifications

• Designed nominal diameter: 160 mm
• Type: coupling (muff) for round ducts
• Material compatibility: spiral and rigid sheet metal ducting
• Function: mechanical connection to maintain alignment and airflow continuity

How to use

Ensure both duct ends are cut square and free of burrs or deformation before assembly. Slide the coupling onto one duct end until it seats, then align the adjoining duct section and push it into the opposite side of the coupling until both joints are fully engaged. Check that the ducts are concentric and aligned. Depending on site practice and the duct material, secure the joint with appropriate mechanical fasteners or sealing tape and perform an inspection to confirm continuity and absence of significant gaps.

Usage recommendations

For reliable performance, use the coupling with ducts that match the 160 mm nominal diameter and that have clean, undamaged ends. Follow local HVAC installation standards for fastening and sealing to achieve air-tightness and avoid undue stress on the connection. When used in systems with significant pressure differentials, verify compatibility with system requirements and add seals or clamps as needed.