Sound-Damped Volumetric Flow Controller PIANO

Fields of application

For use in supply and return air systems, for duct connection to DIN 24190, with integrated volumetric flow controller for use in constant or variable volumetric flow, room or duct pressure regulation.

Function

The shorter design compared to conventional pressure reducing boxes simplifies mounting in constricted situations and allows space to be saved due to the low overall height. Due to the smaller dimensions, installation has been radically simplified.
The sound-damped volumetric flow controller type PIANO with rectangular connection can be connected to rectangular ducts to DIN 24190 or to spiral ducts to DIN 24145 via a transition piece. This allows the sound-damped volumetric flow controller type PIANO to be used for different applications in reconstruction.
The integrated aerodynamically optimised closing profile can be completely opened to achieve a free flow cross-section of 100%. This maximum frei cross-sections reduces pressure losses and minimises flow generated noise. Due to its optimum aerodynamic flow characteristics, it does not require inflow and outflow distances!
This allows the sound-damped volumetric flow controller model PIANO also to be used in place where space is restricted. Due to the minimal pressure loss, the running operating costs of the air-conditioning system are also reduced. The sound-damped volumetric flow controller type PIANO / PIANO-S can already be used at a static pressure difference of as little as 20 Pa, i.e., the duct network and the fan can be designed for small air velocities, which makes the PIANO / PIANO-S suitable for use in low-pressure systems.

Volumetric flow range