Rapid Blast Damper
High-Flow Explosion-Pressure Protection with FC-BRV-02-E(M) Rapid Blast Damper
Rapid blast damper is a dedicated blast damper solution for HVAC, exhaust, process ventilation and critical-area protection applications that require both high airflow and explosion-pressure protection.
The FC-BRV-02-E(M) rapid blast damper allows high ventilation airflow during normal operation. Then, when explosion pressure occurs, it closes within milliseconds and helps limit the pressure impulse entering the protected area. Its manual-reset and self-locking closure keep the damper safely closed after an event.
Closure in Under 8 ms
It fully closes in under 8 ms under 200 kPa reflected peak pressure and helps reduce pressure-impulse transfer.
High Airflow
In its normal open position, it supports high ventilation volume. A 500 × 500 mm model can provide exhaust airflow of up to 3,800 m³/h at a 100 Pa pressure difference.
Manual Reset Safety
The blades lock in the closed position after the blast wave. Operators reopen the damper with a manual reset.
What Is a Rapid Blast Damper?
A rapid blast damper is a mechanical safety device. It closes very quickly when explosion pressure occurs and helps limit the pressure impulse travelling through an HVAC duct, exhaust line or air intake toward a protected area.
FC-BRV-02-E(M) rapid blast dampers can serve oil and gas, chemical, energy, marine, mining and civil-defence applications. These sites often need both high airflow and dependable explosion-pressure protection.
How the Rapid Blast Damper Works
Normal Open Position
The damper blades remain open. Therefore, the ventilation system can maintain high airflow.
Explosion Pressure
When a blast wave develops, reflected peak pressure acts on the damper blades and initiates fast closure.
Millisecond Closure
Next, the blades close in under 8 ms under 200 kPa reflected peak pressure.
Locked Closed Position
Finally, the self-locking mechanism holds the damper closed. A manual reset is required before reopening.
Key Technical Features
FC-BRV-02-E(M) rapid blast damper.
Designed for 200 kPa reflected peak pressure.
Evaluated for a 20 ms explosion duration.
<8 ms under 200 kPa reflected pressure.
>98.5% blast impulse blocking rate at 200 kPa reflected pressure.
Suitable for operating conditions between -30ºC and 285ºC.
Technical Performance Table
| Technical Item | Value / Description |
|---|---|
| Model | FC-BRV-02-E(M) Rapid Blast Damper |
| Design peak pressure | 200 kPa reflected |
| Design explosion duration | 20 ms |
| Closure time | <8 ms at 200 kPa reflected pressure |
| Blast impulse blocking rate | >98.5% at 200 kPa reflected pressure |
| Operating temperature | -30ºC to 285ºC |
| Manual reset | After an explosion, the damper locks closed and reopens by manual reset. |
| Multiple-explosion resistance | It can withstand multiple explosion effects and retain its function after an event. |
| Airflow example | Up to 3,800 m³/h exhaust airflow for a 500 × 500 mm damper at a 100 Pa pressure difference. |
| ATEX certificate | TÜV 15 ATEX 7741 X |
ATEX Information
| Item | Value |
|---|---|
| Certificate No. | TÜV 15 ATEX 7741 X |
| Gas atmosphere | II 2 G c IIC T6…T2 |
| Dust atmosphere | II 2 D c IIIC T70℃…T285℃ |
Material Options
| Code | Material |
|---|---|
| 1 | Stainless Steel 316L |
| 2 | Stainless Steel 304L |
| 3 | Hot galvanized steel |
| 4 | Epoxy-coated steel, non-ATEX |
Order Code and Selection Parameters
| Code Item | Options | Description |
|---|---|---|
| A. Damper material | 316L, 304L, hot galvanized steel, epoxy-coated steel | Select according to ATEX requirements and corrosion conditions. |
| B. Installation type | IW, OW, D | IW: in-wall, OW: on-wall, D: duct-connected installation. |
| C. Width | 0300, 0500, 0700, 1000, 1200, 1500… mm | Set according to duct or opening width. |
| E. Height | 0300, 0500, 0700, 1000, 1200, 1500… mm | Set according to duct or opening height. |
Certificates and Tests
The FC-BRV-02-E(M) rapid blast damper can be evaluated as a product range that has undergone type-testing processes with AMCA and TÜV. Review the applicable test reports during project planning and procurement.
Its ATEX-certified construction can suit applications that require safe operation in gas and dust atmospheres with an explosive-atmosphere risk.
Corrosion Resistance
Chemically resistant material options are important for industrial sites with corrosion risk, marine applications, offshore platforms and aggressive process atmospheres.
316L and 304L stainless steel options suit applications that require high corrosion resistance. Hot galvanized steel and epoxy-coated steel can also be assessed according to project conditions.
Applications
Advantages
Request Information for a Rapid Blast Damper
Rapid blast damper selection should consider expected peak pressure, explosion duration, airflow, duct dimensions, installation type, ATEX requirements, material selection and the need for manual reset.
You can request a technical assessment for FC-BRV-02-E(M) rapid blast damper and blast-protection solutions.
