+86 13206380520
Constant Air Volume (CAV) Damper
Galvanized steel electrostatic-coated mechanical constant air volume damper with stainless steel internals and EPDM sealing, highly sensitive response, stable airflow control (±5%), zero-energy operation, easy installation, and long service life – perfect for laboratory, cleanroom, pharmaceutical, and HVAC systems requiring reliable, maintenance-free airflow regulation.
Category:
Accessories
key word:
This constant air volume (CAV) damper is a high-quality, mechanical airflow regulator designed to maintain a preset air volume in ventilation ducts regardless of upstream pressure fluctuations. Constructed from premium galvanized steel sheet with full electrostatic powder coating, the unit features a smooth, durable, and highly corrosion-resistant finish, making it ideal for long-term use in demanding environments such as laboratories, cleanrooms, pharmaceutical facilities, hospitals, and commercial HVAC systems.
The damper blade is precision-stamped and paired with a sensitive mechanical linkage and gravity/spring-balanced mechanism, providing fast and accurate response to pressure changes (typical operating range 50–1500 Pa). It automatically adjusts the opening to keep supply or exhaust airflow stable within ±5% of the set value—no external power, sensors, or controls required, delivering true zero-energy constant volume regulation.
Critical components including the adjustment rod, linkage arms, and scale dial are made of stainless steel for superior durability and corrosion resistance. The scale dial uses wear-resistant acrylic with laser-etched markings for clear, long-lasting readability. An imported EPDM foam rubber gasket ensures excellent airtightness when closed, with leakage rate ≤3%.
The compact design supports flexible installation (flanged connection, suitable for horizontal or vertical mounting), and maintenance is minimal—no lubrication or periodic adjustments needed, perfect for high-cleanliness applications requiring low-maintenance operation.
Key Advantages
- Galvanized steel body with electrostatic powder coating – excellent corrosion resistance and premium appearance
- Stainless steel core components + EPDM sealing – long service life and superior airtightness
- Fully mechanical, high-sensitivity response – no electricity, zero energy consumption for constant volume control
- Wide airflow regulation range with high stability (±5% accuracy)
- Standard flange connection – easy installation and integration
- Low maintenance, reliable performance in cleanroom, lab, and pharmaceutical ventilation systems
Specification Table (Common Sizes – Unit: mm)
| Size (Width × Height) | Recommended Airflow Range (m³/h) | Notes |
|---|---|---|
| 120 × 120 | 200–400 | Smallest size, ideal for low-flow outlets |
| 160 × 120 | 300–600 | Common for small lab exhausts |
| 200 × 200 | 500–1000 | Standard lab vent size |
| 250 × 200 | 800–1500 | Typical for mid-size fume hoods |
| 320 × 320 | 1200–2500 | Suitable for cleanroom ducts |
| 400 × 250 | 1500–3500 | Common branch duct size |
| 400 × 400 | 2000–4500 | Large exhaust systems |
| 500 × 400 | 3000–6000 | High-volume lab/workshop use |
| 630 × 400 | 5000–9000 | Heavy-duty ventilation |
| Other sizes | Customizable | Non-standard sizes available with price adjustment |
Get ln Touch Now
Need Assistance? We're Here To Help!
Phone
+86 13206380520
roy.gao@restalabfurniture.com
Contact Address
Building C-45, Liandong U Valley, Huaguan Road 869, Hi-Tech Development District, Qingdao City, Shandong Province, China
Previous page
FACTORY SHOWCASE
What makes us different from other suppliers?
Established in 2014, we specialize in laboratory engineering, cleanroom systems, ventilation, gas supply, and customized laboratory furniture.
Professional Manufacturer
We maintain rigorous quality control across every stage—from planning and design to fabrication and installation.
Corporate Advantages
Resta Lab has been committed to delivering professional, safe, and high-quality laboratory environments for scientific research, industrial production, pharmaceuticals, biotechnology, and other sectors.
Quality Certifications
We are certified by CE, ISO, SEFA, SGS, and ASHRAE, ensuring our solutions meet the highest global benchmarks for safety, sustainability, and performance.
Need Assistance? We're Here To Help!
Enter your information and our team will reach out to you shortly.
Main product catalogue
Our main products include Jeans, pants, jackets etc, mainly for woven clothing
