Air duct stiffening
AVOIDS VIBRATIONS AND NOISE
Turbulences and vibrations can cause disturbing vibrational noises to ductwork. In order to avoid these noises, the best possible damping and stiffening of the ductwork is required. Rectangular straight ducts with unfavourable duct cross-sections, with high positive or negative pressure and, of course, in case of large duct cross sections do need reinforcement measures.
Ventilation ducts with a large cross-section and varying excess pressure and negative pressure should be optimally stiffened in order to ensure maximum stability and elimination of flutter. The additional reinforcements then ensure that the duct sections remain dimensionally stable and that the entire ventilation system can be operated smoothly without pressure losses/leaks and, above all, safely.Gebhardt-Stahl reinforcement materials are easy to use and cost-effective.
Vibrations
Reduce disturbing vibration noise in ventilation ducts with large crosss-section
Optimum stiffening
Ensures optimum bracing with the greatest possible stability
Components
Stiffening pipes, duct clamps, dowels, screws, plates and seals
Conduits / Reinforcing rods
Gebhardt-Stahl conduits are the main part of the internal duct reinforcement system and are available in various diameters. In addition to galvanised tubes in various diameters, stainless steel tubes are always in stock.
In combination with the appropriate dowels and plates for air duct stiffening, the conduits can be used flexibly for various duct cross sections and pressure conditions.In addition, we offer materials for simple and cost-effective sealing of the plates or for producing cross-reinforcements.
Tube 15 x 1,5 mm
Art. no.: 313200016 (Galvanised steel Z275)
Art. no.: 313200140 (AISI 304)
15,0 x 1,5 mm
Tube 16 x 2 mm
Art. no.: 313200012
Galvanised steel Z275
16,0 x 2,0 mm
Tube 16 x 1,0 mm
Art. no.: 313200014
Galvanised steel Z275
16,0 x 1,0 mm
Cross connector / Grip
For larger ductwork a simple reinforcement might be not sufficient, what means that cross-reinforcement is often necessary. In order to be able to carry out these reinforcements quickly, Gebhardt-Stahl offers high-quality connecting elements for cross-reinforcements. Our grips and cross-connectors work perfectly with our conduits and are available made of different materials.
Grip for reinforcing rod
Art. no.: 313200000
Polyethylene
Colour: white
Suitable for Gebhardt-Tubes 16 x 2, 16 x 1 & 3/8"
Cross-connector for reinforcing rod
Art. no.. 313200011
Galvanised steel
With screw M8 x 25
Suitable for Gebhardt-Tubes 3/8", 16 x 1,0 mm, 16 x 2,0 mm and 15 x 1,5 mm
Cross-connector for reinforcing rod - AISI
Art. no.: 312200440
Stainless steel AISI 316
With screw M8 x 25
Suitable for Gebhardt-Conduits 14 x 2,0 mm and 15 x 1,5 mm
Dowels
The dowels are necessary for screwing the conduit and the duct wall. You can choose between nylon dowels with brass threads and dowels made of steel or stainless steel. Available with thread M6 or M8.
Fischer-dowel
- Art. no.: 313210010
- PVC/Brass
- Metric thread M6
- Suitable for Gebhardt-Tubes 15 x 1,5, 16 x 2 & 3/8"
EMBY-FIX
- Art. no.: 313210012
- Galvanised steel
- Metric thread M8
- Suitable for Gebhardt-Tubes 15 x 1,5, 16 x 2 & 3/8"
- Art. no.: 313210044
- Stainless steel AISI 304
- Metric thread M6
- Suitable for 15 x 1,5 mm
Screws
Hexagon screws for connecting the conduit and duct wall. Screws made of steel or stainless steel are available with M6 or M8 threads and fit our dowels for reinforcement.
Hexagon screw M6
Art. no.: 313210020
DIN 933-8.8
Galvanised steel
Continuous thread
M6 x 50 mm, for Fischer-dowel
Hexagon screw M8
Art. no.: 313210022
DIN 933-8.8
Galvanised steel
Continuous thread
M8 x 50 mm, for Emby-Fix-dowel
Hexagon screw M6 AISI
Art. no.: 313210440
DIN 933-8.8
Stainless steel AISI 304
Continuous thread
M6 x 50 mm
Plates for air duct stiffening
Plates for air duct stiffening act as a support for the conduits and are an integral part of the screw connection between duct wall and conduit. Gebhardt-Stahl plates are also available made of stainless steel.
- Drilling: 6,5 mm, 8,5 mm, 10,5 mm
- Galvanised steel, Stainless steel AISI 304 & AISI 316
OUR EXPERTS IN THE FIELD OF HVAC COMPONENTS
Our focus on continuous development has allowed us to grow over the past decades from a supplier of ventilation components to a leading company in the field of air duct profiles and a full-range supplier in the field of ventilation accessories.
In the course of this development, however, one thing has always been in the foreground - the pursuit of professional, high-quality and individual solutions for you, our customers and partners.
Sealings
Plates for air duct stiffening must be sealed in order to avoid leakages caused by the internal reinforcement system. The conventional method using sealing compound, e.g. Gebhardt-MAXX, is time-consuming and cost-intensive.
With our seals for duct reinforcement, we can offer a simple, fast and cost-effective way to securely seal the reinforcements.
The Gebhardt-Stahl seals must simply be placed between the plate and duct wall. When screwing, the seals are compressed and in doing so, reliably and permanently seal the area of the drilled hole. The seals are available in two sizes, which makes them suitable for different screw sizes.