Volume flow controllers

layer

Type VFL

 

Circular, mechanical self-powered controllers for insertion into ducting, for the quick and easy balancing of constant volume flow rates in ventilation and air conditioning systems

  • Unique damper blade edge for acoustic optimization
  • Simple and quick commissioning on site
  • Range of volume flow rate setpoints for each nominal size
  • Precise and simple setting of volume flow rates using a scale
  • Best accuracy among controllers for insertion
  • Suitable for low airflow velocities from 160 fpm (0.8 m/s)
  • Any installation orientation; maintenance-free

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layer

Type VFC

 

Circular mechanical self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems with low airflow velocities

  • Suitable for airflow velocities from 157 fpm (0.8 m/s)
  • Very simple commissioning
  • Volume flow rate can be set using a rotary knob and a scale on the outside of the casing
  • Simple retrofit of an actuator for variable volume flows
  • Any installation orientation; maintenance-free
  • Casing air leakage to EN 1751, class C


Optional equipment and accessories

  • Secondary silencer Type CA, CS or CF for the reduction of air-regenerated noise
  • Hot water heat exchanger Type WL and electric air heater Type EL for reheating the airflow
  • Actuator for variable volume flows or for Vmin / Vmax switching

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layer

Type RN

 

Circular self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems

  • Volume flow rate can be set using an external scale, no tools required
  • High control accuracy
  • No on-site test measurements required for commissioning
  • Suitable for airflow velocities of up to 2360 fpm
  • Any installation orientation; maintenance-free
  • Casing air leakage to EN 1751, class C


Optional equipment and accessories

  • Acoustic cladding for the reduction of case-radiated noise
  • Secondary silencer Type CA, CS or CF for the reduction of air-regenerated noise
  • Hot water heat exchanger Type WL and electric air heater Type EL for reheating the airflow
  • Actuator for switching between setpoint values

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layer

Type AK

 

Circular shut-off dampers for shutting off volume flows in ventilation ducts of air conditioning systems

  • Maintenance-free damper blade mechanism
  • Closed blade air leakage to EN 1751, class 4
  • Casing air leakage to EN 1751, class C


Optional equipment and accessories

  • Electric actuator
  • Spring return actuator
  • Pneumatic actuator
  • Auxiliary switch with adjustable switching points for capturing the end positions

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layer

EN

Rectangular self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems

  • Suitable for volume flow rates up to 12,096 m³/h or 3,360 l/s
  • Volume flow rate can be set using an external scale, no tools required
  • High control accuracy
  • No on-site test measurements required for commissioning
  • Suitable for airflow velocities of up to 8 m/s
  • Casing air leakage to EN 1751, up to class C


Optional equipment and accessories

  • Acoustic cladding for the reduction of case-radiated noise
  • Secondary silencer Type TX for the reduction of air-regenerated noise
  • Hot water heat exchanger of Type WT for reheating the airflow
  • Actuator for switching between setpoint values

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Contact

Thank you for your message!

Visual contact Visual contact

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +1-770-569-1433 | Fax: +1-770-569-1435