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Our employees explain and illustrate the requirements of standards and regulations already in consultation meetings and thus facilitate the implementation and safe application in daily work. In addition, they present engineering know-how from 50 years of practice as well as research and thus provide our customers with a decisive competitive advantage.

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SCHALLEX – Noise Insulation

Holzhauer Pumpen GmbH

SCHALLEX - Noise Insulation

Room air accessories and unit frames for low-noise operation.

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Room air accessories in special “SCHALLEX” design.

Exhaust fan with silencer specially matched to the sound spectrum of the unit:

  • Insertion loss, nominal width and length according to local specifications
  • with wall mounting flange made of hot-dip galvanised sheet steel with fixing holes
  • Exit side with mounted overpressure louver
  • Including fixing claws for ceiling suspension
  • On the inside of the room with mounted exhaust air fan

Supply air louvre with silencer specially matched to the sound spectrum of the unit:

  • Insertion loss, nominal width and length according to local specifications
  • With wall mounting flange made of hot-dip galvanised steel with fixing holes
  • Exit side with mounted overpressure louver
  • Including fixing claws for ceiling suspension
  • Inside the room with negative pressure louvre
  • Weather protection grille made of extruded aluminium profiles and bird protection grille with fixing flanges, loose, for installation from the outside in the wall opening

Version SCHALL-EX for structure-borne sound insulated installation of the unit

  • wWith prefabricated steel foundation made of sectional steel, electrically welded and hot-dip galvanised in a full bath
  • For structure-borne sound insulated installation on a suitable load-bearing floor slab
  • With elastomers in Shore hardness 25 – 60 as required
  • Including 2 sets of fixing accessories type “A” for fixing the prefabricated foundation to the base plate

Note:
When using the SCHALL-EX version, we recommend our VdS pump connection assemblies of type 2 for connecting the suction-side and pressure-side piping to the pump.


Air and structure-borne sound insulated units with exhaust gas aftertreatment system

  • Fire pump according to NFPA-20
  • Nominal capacity per unit: 3500 US gpm at 215 ft head (795 m³/h at 66 m head)
  • Engine power per unit: 261 kW
  • Soundproofed SCHALLEX version

Applications

Reference Projects

Did you know …

Holzhauer-Pumpen was founded back in 1969 and has since developed into a leading and globally recognised supplier of pump installations worldwide.

Let us help you!

Our employees explain and illustrate the requirements of standards and regulations as early as the initial consultation phase and thus facilitate the implementation and safe application in your daily work. In addition, they present engineering expertise spanning 50 years of hands-on application and research and thus provide our customers with a decisive competitive edge.