Technical Selection - Airtight Louver Damper LD-J
2.3.1. Louver Damper, airtight design LD-J
Louver damper, type LD-J and type ND-J, will be used for controlling air flow and shutting off air ducts.
Data
| Nominal dimensions (W/H) | see table |
| Max. temperature | 90°C |
| Adm. leakage rate damper housing | class C acc. to DIN EN 1751 |
| Adm. leakage rate damper blades (lamellas) | class 4 acc. to DIN EN 1751 |
| Frame | Stainless steel or galvanised steel, 1.5 mm, by means of a screwed construction |
| Actuator | manual, eletrical, or pneumatic |
Nominal dimensions in mm
| B 1 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 | --- |
| H 1 | 150 | 300 | 450 | 600 | 750 | 900 | 1050 | 1200 | 1350 | 1500 | 1650 | 1800 | 1950 |
1 All combinations of W and H dimensions possible, other dimensions also possible
Features
- The damper is designed to operate without any failure at an operating pressure of 1.1 time the admissible operating pressure
- Warp-resistant hollow body lamellas made of aluminum (optional with coated or eloxiered aluminium)
- Lamellas equipped with changeable silicone rubber Profile
- Counter rotating lamellas by means of external positioned rod, parallel rotating lamellas available on request
- Maintenance-free Operation