BDSI inline backdraught shutter
The BDSI is suitable for placement in circular ducts to avoid a reverse air flow.
construction
The casing of the BDSI has been constructed from galvanised steel. The blades are made of aluminium. The shaft and the spring are made of stainless steel. The butterfly shutter is fitted with a return spring, which closes the blades onto a sound absorbing ring.
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Specifications |
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| material housing: | galvanised steel |
| material blade: | aluminium |
| material shaft and spring: | aluminium |
| material gasket tape: | synthetic rubber |
| temperature range: | -10 °C to 60 °C |
| diameter range: | 100-200 mm |
| appearance: | galvanized |
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Technical specifications |
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Dutch specification |
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German specification |
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English specification |
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Product images
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Certificates |
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not available |
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| 100 | BDSI100 | 1 | 720 |
| 125 | BDSI125 | 1 | 576 |
| 150 | BDSI150 | 1 | 360 |
| 160 | BDSI160 | 1 | 384 |
| 200 | BDSI200 | 1 | 288 |