Accessories and Components

Sound protection, Dampers, Measurement and Control

Why Choose HLU Fan Accessories?

Perfect Complements for Optimal Performance and Durability

Our high-quality accessories and air handling components maximize the efficiency, safety, and longevity of your ventilation systems. Designed for demanding industrial applications, our air handling solutions offer optimal efficiency with high chemical resistance and corrosion protection.

Chemically resistant and corrosion-free
Perfectly matched to HLU fans
Suitable for demanding industrial applications

Materials

All our products are made from high-quality plastics

chemisch beständig | korrosionsbeständig | langlebig

Polyethylene | PE

✓ Good resistance to inorganic acids

✓ High UV resistance

✓ Good low temperature impact resistance

✓ Attractive price

Polypropylene | PP

✓ Good resistance to inorganic acids

✓ Good mechanical strength

✓ Attractive price

Polypropylene flame retardant | PPs

✓ Good resistance to inorganic acids

✓ Good mechanical strength

✓ Attractive price

Polypropylene flame-retardant, electrically conductive | PPs-el

✓ Good resistance to inorganic acids

✓ Suitable for ATEX zone 1

Polyvinyl chloride | PVC

✓ Very good resistance to many chemicals (e.g. chromic acid, chlorine, ozone)

✓ Attractive price

✓ Can be glued

Polyvinylidene fluoride | PVDF

✓ sehr hohe chemische Beständigkeit

✓ hohe thermische Beständigkeit (bis 100 °C)

Sound Solutions

Effective Noise Protection for Every Application

Reduce the noise emissions of your ventilation system!
Our sound solutions meet the highest standards, ensuring optimal protection for your employees and the environment.

Sound protection cabin

Available for fans of all type series and sizes
Suitable for indoor and outdoor installation
Constructed from plastic or steel

Circular silencer (RSD)

For small to medium airflows:
- Volume flow 20 to 8000 m³/h
- Nominal diameters: 75 - 400 mm

Splitter silencer (KSD)

For medium to large flow rates
Individually calculated based on the volume flow and the desired sound reduction

Dampers

Regulating or Shutting off air flows

Our shut-off and control dampers enable precise regulation of airflows in industrial processes.
Made from highly resistant plastics, they are particularly suitable for aggressive and contaminated exhaust air streams.

Shut-off damper AK round

Pressure difference max. +/- 3000 Pa
Nominal diameters from 160 to 710 mm

Tight closing in accordance with DIN 1946-4
Pipe, sleeve or flange connection
Damper adjustment optionally electric, pneumatic or by manual operation

Absperrklappe AK-E-LD eckig

luftdicht nach DIN EN 1751, Klasse 4
Höhe eines Klappenblattes 200 mm, Breite beliebig wählbar
Klappenverstellung wahlweise elektrisch, pneumatisch oder durch Handbetätigung

Measurement & Control – Efficient Airflow Monitoring and Regulation

Precise monitoring and control of airflows are essential for efficient and safe plant operation. Our MSR technology enables exact control and adjustment of your fans and dampers.

Air stream monitoring ASM-MU

Nominal diameters 75 - 400 mm
Setting range 1…10 m/s

With calorimetric sensor in protective housing made of plastic
Also available in ATEX version for zone 2

Constant volume flow controller VRM and VFL

Nominal diameters from 90 to 315 mm

Regulation without auxiliary power
For maintaining constant airflow under varying pressure conditions
Type VRM with external control element

Variable Volumenstromregler VRR

Volumenstrom: 50 bis 4.500 m³/h
Druckdifferenz: min. 100 Pa
Nennweiten: von 110 bis 400 mm

schnelles und exaktes Ausregeln mit einer Genauigkeit von +/- 5 % des eingestellten Volumenstroms
dichtschließend nach DIN 1946 – Teil 4 | luftdicht schließend
Wirkdruckermittlung mittels integrierter Venturidüse

C&I at the fan

With the HLU smartControl and HLU easyControl, for the transparent display and recording of current measurements, you can identify critical conditions early and avoid costly failures
All relevant information can be accessed directly at the fan or integrated into the building management system

Fan control

Precise control of the air volume via the fan speed
For operation with frequency converter or EC motors
Control of up to four dampers with ON/OFF drive

ATEX version for hazardous areas

Our components are available in ATEX-compliant version - specially developed for the safe conveyanceof chemically aggressive and potentially explosive exhaust air.