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JL 254Air tight multi-leaf dampers in galvanized steel classified DIN EN 1751-4. Application
- For airstream regulation in ventilation and airconditioning systems
Material
- Galvanized steel blades, frame, and round axle
- Air tight sealings between the blades and the gears
- Aluminium gears
- Airtight polyamid bearings max for temperature ranges upto 85°C
ColourComposition
- Galvanized steel aerodynamic designed regulation blades of 100 mm width containing aluminium gears for simultanious counter-rotating operation of the damper
- Air tight sealings between the blades and the gears classified DIN EN 1751-4
- Galvanized steel axle of Ø 12 mm and length 100 mm mounted on one of the above blades, wich extends 67 mm outside the damperflanges. Axle with borehole at its end to easily mount axle extension LOA 100 M, LOA 150 M or LOA 200 M (upon request), when a longer axle is required.
- Galvanized steel housing with depth of 110 mm and flange of 30mm, made out of 2 vertical panels with air-tight polyamid bearings and 2 horizontal panels, all welded together
- All dampers are made to measure. To obtain the exact height of the damper when in-between sizes are ordered, the upper and lower frame will be bended towards or away from the middle of the damper(see drawing), to make a execellent fit with as much as possible standard fitted blades. Due to this fact the free area of the damper can become less than the opening of the LXH dimension.
Mounting
- To be mounted between rectangular ducts with flanges of 30 mm
- To be surface mounted on wall, floor or ceiling
Accessories
- Manual control handle with fixing system type MCS-250/254
- Mounted axle extensions type LOA 100 M, LOA 150 M, LOA 200 M
- Extra axle available upon request
- Square axle end of 9 X 9 mm type SQE
- Actuators BELIMO
- Alternative bearings:
- PTFE bearings for low and high temperature applications type TBS (from -50°C to 200°C)
- Brass bearings for high temperature applications type MBS (up to 250°C)
- Ball bearings for high temperature applications at high pressure type BBS (up to 200°C and 2500Pa)
- Air tight silicone sealings (for high temperature applications upto 250°C) +10%
- Horizontal mounted coupling system type HVM
- Alternative outer-mechanism (for high temperature applications)
- Counter-rotating blades (+20%)
- Parallel moving blades (+20%)
- Reinforced frames (+5%)
- Multi-leaf damper with vertical blades (+15%)
- Alternative construction materials
- Aluminium (x2.25)
- Stainless steel (INOX304) (x3.75)
- Stainless steel (INOX316) (x4.3)
- Aluminium blades with galvanized steel frame (x1.75)
Text for tender
- The multi-leaf volume control dampers shall be of the air tight type classified DIN EN 1751-4 in galvanized steel with counter-rotating blades, aluminium gears, round axle and polyamid bearings.
- ATC Type JL 254
Order example
- JL 254, 600, 400, C30 + MCS-250/254
Explanation
JL 254 = Type of air-tight multi-leaf damper
600 = Length
400 = Height
C30 = connection flange
Accessories (Optional)
MCS-250/254 = Manual control with fixing system |
ArticlesTorqueOther available productsVersion ATEX
available upon request |