Description
Airtight damper is used for the closing of air flow in ventilation systems that must ensure a high degree of air purity in the ventilated areas. According to VDI 3803 or DIN 24194, part 2 air leakage flow complies with Class II.
Construction
- round casing
- oval shaped damper blade with rubber seal
- manual or electric motor control mechanism
Material
Material options:
- galvanized sheet metal
- stainless steel sheet metal INOX AISI 304
Accessories
Rubber seal rings in grooves on the casing.
Belimo electric drive:
- LM24A
- NM24A
- LM24A SR
- NM24A SR
- LM230A
- NM230A
- LM230A SR
- NM230A SR
Dimensions
- 1 - casing
- 2 - blade
- 3 - handle or actuator bracket
- 4 - rubber seal ring
| Dimension | 100 | 125 | 140 | 160 | 180 | 200 | 250 | 315 | 355 | 400 |
|---|---|---|---|---|---|---|---|---|---|---|
| ΓΈ D | 98 | 123 | 138 | 158 | 178 | 198 | 248 | 313 | 353 | 398 |
| L | 300 | 400 | 500 | |||||||
Application range for actuators
| Size | 100 | 125 | 140 | 160 | 180 | 200 | 250 | 315 | 355 |
|---|---|---|---|---|---|---|---|---|---|
| Actuator | LM | NM | |||||||