Lindab KVAPL Circular Straight Low-Built Silencer Instructions
- June 4, 2024
- Lindab
Table of Contents
Linda | for a better climate
Circular straight low-built silencer KVAPL
Description
KVAPL is a rectangular attenuator with circular connections and a low
installation height.
Attenuation material is mineral wool covered with the textile to prevent
fibers from coming out. The KVAPLs are made from galvanized steel sheets. The
attenuator can be cleaned by rotating nylon brushes, a vacuum cleaner, or a
damp cloth.
The openable model; can be used as a cleaning door and possibly to replace the
acoustic infill.
Fulfills tightness class C.
Tested according to ISO 7235 standard.
Perforated sheet on top of the acoustic material, special materials, sizes,
and flanges on request. Please contact Lindab sales.
The KVAPL comes in two different designs.
Model:
3.= Attenuator with mineral wool attenuation material.
4.= Openable Attenuator with mineral wool attenuation material.
To select the appropriate attenuator and optimize connection size and length
for the best performance, please use our online tool Lindquist Visit
www.lindQST.com to find out more.
Order code
Example: KVAPL 200 – 1000 – 3
Dimensions and sound data
KVAPL model 3 & 4
| Insertion loss [dB] for centre frequency [Hz] | Model |
|---|---|
| Ød | l |
| [nom] | [mm] |
| 100 | 300 |
| 100 | 600 |
| 100 | 1000 |
| 125 | 300 |
| 125 | 600 |
| 125 | 1000 |
| 160 | 300 |
| 160 | 600 |
| 160 | 1000 |
| 200 | 300 |
| 200 | 600 |
| 200 | 1000 |
| 250 | 600 |
| 250 | 1000 |
| 315 | 600 |
| 315 | 1000 |
| 400 | 600 |
| 400 | 1250 |
| 500 | 600 |
| 500 | 1250 |
| 630 | 600 |
| 630 | 1250 |
Model 3 and 4
Pressure loss and sound generation for 300 mm long attenuators
Model 3 and 4
Pressure loss and sound generation for 600 mm long attenuators
Model 3 and 4
Pressure loss and sound generation for 1000 and 1250 mm long attenuators
(Ød1 400 – 630 → (l) = 1250 mm)
Kwoct correction tables model 3 and 4.
| Ød1 | Correction, Kwoct (dB) for center frequency [Hz] |
|---|---|
| [mm] | 63 |
8k
63| 1| 5| 1| -2| -5| -14| -20| -31
80| 0| 3| 2| -1| -7| -12| -17| -28
100| 2| 5| -1| 1| -9| -19| -24| -42
125| 7| 6| 2| 0| -9| -15| -21| -41
160| 8| 3| 1| 0| -8| -14| -19| -37
200| 4| 4| 4| -1| -9| -13| -20| -31
250| 5| 3| 1| -2| -5| -10| -16| -28
315| 7| 5| 2| -3| -5| -11| -17| -30
400| 10| 6| 2| -2| -6| -13| -21| -27
500| 6| 6| 2| -2| -6| -14| -22| -39
630| 7| 7| 2| -2| -6| -15| -22| -40
Tol.+/-| 3| 3| 2| 3| 3| 4| 4| 5
Sound power levels per octave band Lwoct is calculated by adding the octave
band corrections Koch to the total power level Lwa from the graphs.
Lwoct = LwA + Koct
Lindab reserves the right to make changes without prior notice
2022-03-04