• Advantages and design features of the dampers
• Accessories for multi-leaf dampers
• Flange drilling - Profiles
• Special versions
• Multi-leaf damper Standard • Blade width T=100 • Ref. no.: 250 - Design
  • Specifications
• Multi-leaf damper Standard • Blade width T=165 • Ref. no.: 251 - Design
  • Specifications
• Multi-leaf damper Airtight • Blade width T=100 • Ref. no.: 254 - Design
  • Specifications
• Multi-leaf damper Airtight • Blade width T=165 • Ref. no.: 255 - Design
  • Specifications

Advantages and design features of the dampers

Models: The range includes the standard model ″JS″ and the model ″JL″, which is airtight according to DIN 1946 part 4 and DIN EN 1751 class 4, in addition to class 2 (test certificates for all EN 1751 classes available).

Dimensions: See width (a) and height (b) in tables below; intermediate sizes are available and are charged at the price of the next largest dimension.

Frame: Of galvanized sheet steel, available in a standard version with three flange profiles, guaranteeing universal installation. Any flange profile can be manufactured on request. If no flange profile is indicated, C 38 will be manufactured automatically.

Blades: Of galvanized sheet steel, designed as torsion-proof hollow profiles in two block widths of 100 mm or 165 mm, model JL with sealing lips, working in opposite orientations with particularly favourable drive and flow conditions.

Bearings: Made out of polyamide, both models maintenance-free and airtight. Teflon and brass bearings are available for elevated temperatures, ball bearings for elevated pressure on request.

Blade coupling systems: External linkage or with aluminium gears.

Adjustment options: Adjustable manually or by motor to provide optimal solutions for every use.

Axle extension: An axle extension, consisting of a bushing, an extension axle and grooved pins, must allow aligned mounting of the servomotor. In addition, we always recommend the use of an intermediate bearing when employing axle extensions, in order to avoid distortion of the drive axle. Please consult us when installing multi-leaf dampers under thermal stress, since the use of a universal coupling may be required in this case.

Accessories: Fastening devices for mounting all commercially available actuators are supplied as standard.

Combination: Standard combination with the weather resistant louvre, ref. nos. 260 and 261, is also available.

Fig. 1:

Fig. 1 detailed:

Fig. 2:

Standard • Blade width T=100 • Ref. no. 250

*140 mm with linkage (opposite and same direction)

Specifications:

Multi-leaf damper manufactured by AEROTECHNIK SIEGWART, version JS, frame of galvanized sheet steel, galvanized blades 100 mm wide, in torsion-proof hollow profile, bearing maintenance-free and airtight, blade coupling system with external linkage on one side (or with aluminium gears).

Dimensions: Width (a) = mm

Height (b) = mm

Accessoiries:

Standard • Blade width T=165 • Ref. no. 251

Specifications:

Multi-leaf damper manufactured by AEROTECHNIK SIEGWART, version JS. Frame of galvanized sheet steel, galvanized blades 165 mm wide, in torsion-proof hollow profile, bearing maintenance-free and airtight, blade coupling system with external linkage on one side (or with aluminium gears).

Dimensions: Width (a) = mm

Height (b) = mm

Accessoiries:

Airtight • Blade width T=100 • Ref. no. 254

*140 mm with linkage (opposite and same direction)

Intermediate sizes are available and are charged at the price of the next largest dimension.

Specifications:

Multi-leaf dampers manufactured by AEROTECHNIK SIEGWART, version JL. Airtight according to DIN 1946 part 4 and DIN EN 1751 class 4, frame of galvanized sheet steel, galvanized blades 100 mm wide, in torsion-proof hollow profile with sealing lip, bearing maintenance-free and airtight, blade coupling system with external linkage on one side (or aluminium gears with sealing rings on one side, blade and opposite gear with sealing).

Dimensions: Width (a) = mm

Height (b) = mm

Accessoiries:

Airtight • Blade width T=165 • Ref. no. 255

Intermediate sizes are available and are charged at the price of the next largest dimension.

Specifications:

Multi-leaf damper manufactured by AEROTECHNIK SIEGWART, version JL. Airtight according to DIN 1946 part 4 and DIN EN 1751 class 4, frame of galvanized sheet steel, galvanized blades 165 mm wide, in torsion-proof hollow profile with sealing lip, bearing maintenance-free and airtight, blade coupling system with external linkage on one side (or aluminium gears and sealing rings on one side, blade end opposite gear with sealing).

Dimensions: Width (a) = mm

Height (b) = mm

Accessoiries:

Subject to alterations without advance notice