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May 27, 2026
Aier Ventilation offers a wide range of iris dampers stainless steel, available in sizes from 80mm to 800mm. Made primarily from galvanized steel and stainless steel, these stainless steel iris valve for air solutions are customizable, with adjustable plastic part colors. Ideal for airflow regulation in ventilation pipe connections.
Choosing the right iris damper manufacturer directly affects the accuracy, durability, and long-term performance of your HVAC system. Aier Ventilation has been supplying precision-engineeredstainless steel iris dampers to global markets for over two decades.
25+ Years Expertise: ISO 9001-certified metal iris valve production, a top-tier choice for HVAC spare parts list durability.
Custom Solutions: Modify blade thickness, seals, or actuators per your specs.
Fast Lead Times: Standard units ship in 2 weeks; custom orders in 4 weeks.
Large-Scale Production Facility: 25,000㎡ factory with 250+ skilled workers and a strong engineering team, supporting both mass production and OEM customization.
Export Experience: Long-term supply to HVAC distributors and contractors in global markets, especially Europe and North America, ensuring compliance with international project requirements.
Strict Pre-Shipment Inspection: Each iris damper is tested for airflow control accuracy, structural stability, and surface quality before delivery.
High-performance 304/316 stainless steel iris dampers with customizable configurations:
| Parameter | Specification |
|---|---|
| Material | 304/316L stainless steel (standard) |
| Operating Pressure | Up to 25 psi (1.7 bar) |
| Temperature Range | -20°F to 750°F (-29°C to 399°C) |
| Diameter Range | 2" to 48" (custom sizes available) |
| Connection Types | Flanged / Wafer / Threaded |
| Actuation | Manual / Pneumatic / Electric (optional) |
Zero-Leak Design – Laser-cut stainless steel iris valve blades ensure 100% shutoff
Corrosion Resistant – Ideal for chemical plants and marine environments
Low Maintenance – No lubrication required vs. traditional butterfly valves
Fast Response – Adjusts from fully open to closed in <5 seconds
Resistant to acids, alkalis, and solvents
Complies with FDA/USDA standards for food-grade applications
Iris dampers for circular ductwork and exhaust systems
Reduce energy waste with adjustable dampers
Handles high-temperature flue gases in boilers and incinerators
Precise Airflow Control: Allows for accurate regulation of air volume in critical parts of HVAC system installations.
Low Noise: Operates quietly compared to other types of dampers.
Easy Installation: Simple to install and adjust.
Versatility: Suitable for various HVAC applications.
Check that the opening is free to expand and contract and that it matches the dial, and zero the dial when there is no problem. When connecting the pipe, connect the two sections of pipe to each side of the damper. Check that they are secure.
An iris damper works through a mechanical ring system connected to multiple overlapping blades. When the adjustment ring is rotated, the blades move simultaneously, increasing or decreasing the central opening.
This design ensures uniform airflow restriction without turbulence spikes, which helps maintain stable pressure in circular ductwork. iris dampers Stainless steel are especially valued for their smooth operation and long-term mechanical stability.
An iris damper is used to precisely regulate and balance airflow in circular HVAC duct systems. It works by adjusting a set of overlapping metal blades that expand or reduce the internal opening, allowing controlled air volume adjustment.
Unlike simple on/off dampers, iris dampers provide fine airflow tuning, making them ideal for ventilation systems that require accurate commissioning, such as laboratories, industrial buildings, and commercial HVAC networks.
An iris damper provides precise and continuous airflow adjustment, while a butterfly damper mainly offers on/off or coarse regulation.
Key differences include:
Iris dampers: circular airflow, high precision, smooth adjustment
Butterfly dampers: simpler structure, less accurate control
Iris dampers are preferred in air balancing applications
Butterfly dampers are used in basic shut-off systems
For HVAC systems requiring accurate airflow commissioning, iris dampers are generally the preferred solution.
An iris damper is sized based on the duct diameter and required airflow volume (m³/h or CFM).
Key selection factors include:
Circular duct diameter compatibility
Required airflow adjustment range
System pressure conditions
Installation space limitations
Correct sizing ensures stable airflow control and prevents excessive pressure loss in the HVAC system.
