EN
Damper
Combination Damper-LZFDF: Duct sizes 2000×2000 to 8000×8000 mm. Manual or electric actuator. Galvanized steel with silicone seals.
Fire Damper-FHF-WS: Sizes 120×120 to 2000×1250 mm. Fusible link + spring return. Corrosion-resistant steel.
Volume Damper-VCD: Sizes 120×120 to 2000×1500 mm. Manual quadrant or electric actuator. Galvanized steel.
Backdraft Damper: Sizes 200×200 to 2000×1250 mm. Gravity or counterweight. Aluminum or galvanized blades.
- Overview
- Product Advantages
- Applications
- FAQ
- Recommended Products
| Model | Image | Target Customers | Core Advantages | Core Keywords |
| Combination Damper-LZFDF |  |
Subway tunnels, central AC, ventilation networks, large building HVAC | Multi-blade linkage; Tight sealing; Precise control; Rugged | Volume control damper, multi-blade damper |
| Fire Damper-FHF-WS |  |
Shopping malls, hospitals, factories with fire safety | Fuse link closure; Fire & smoke isolation; Strong sealing; Code-compliant | Fire damper, smoke damper |
| Volume Damper-VCD |  |
Industrial plants, commercial buildings, computer rooms | Manual/electric adjustment; Good sealing; Fits various ducts | Volume damper, balancing damper |
| Backdraft Damper |  |
Fan outlets, exhaust pipes, HVAC ducts | Reliable sealing; Simple structure; Low resistance | Backdraft damper, check damper |
Product Advantages
|
Combination Damper-LZFDF • Opposed-blade for linear flow. |
Fire Damper-FHF-WS • Fuse link at 70°C or 280°C. |
Volume Damper-VCD • Manual or motorized. |
|
Backdraft Damper • Tight gravity closure. |
Applications
Combination Damper-LZFDF: Main air ducts; tunnel ventilation control; industrial exhaust balancing; HVAC zone control.
Fire Damper-FHF-WS: Fire-rated duct penetrations; smoke exhaust; HVAC return; staircase pressurization.
Volume Damper-VCD: HVAC branch balancing; industrial exhaust; lab fume hood; computer room cooling.
Backdraft Damper: Fan discharge; exhaust louver; HVAC supply with multiple fans; AHU discharge.
FAQ
Model: Combination Damper-LZFDF
Q1: What actuator voltage is available?
– 24V, 220V, or 380V.
Model: Fire Damper-FHF-WS
Q1: What temperature ratings are available?
– 70°C (fire) or 280°C (smoke).
Q2: Is an actuator included?
– Thermal actuator (fuse link) included; electric reset optional.
Model:VolumeDamper-VCD
Q1: What is the leakage class?
– Class 3 (standard) or Class 2 (with seals).
Q2: Can it be used in high-temperature air?
– Up to 150°C with special seals.
Model:Backdraft Damper (Check Valve)
Q1: Can it be installed horizontally?
– Yes, with spring assist.
Q2: What is the maximum velocity?
– 15 m/s.
