Type VFR

For the reliable balancing of volume flow rates

 

Circular flow adjustment dampers for the adjustment of volume flow rates and pressures in supply air and extract air systems

  • Each flow adjustment damper carries a diagram with setting values that ensure rapid commissioning on site
  • Suitable for duct pressures up to 1000 Pa.
  • Volume flow rate can be set using a rotary knob and a scale on the outside of the casing
  • Simple retrofit of an actuator
  • Casing air leakage to EN 1751, class C


Optional equipment and accessories

  • Actuator with potentiometer
  • Actuator with mechanical stops
small_tab1_Serie VFR
  • Application
  • Description

Application

  • Circular flow adjustment dampers Type VFR for the simple balancing of volume flow rates and pressures in air conditioning systems
  • Stepless adjustment of the volume flow rate using a rotary knob with position indicator
  • Simple retrofit of an actuator
  • At the minimum setting (closed position 0) a system pressure dependent leakage flow rate occurs

Special features

  • Diagram with setting values on each flow adjustment damper
  • Simple retrofit of an actuator is possible

Construction

  • Galvanised sheet steel
  • A2: Stainless steel

Parts and characteristics

  • Ready-to-install flow adjustment damper
  • Rotary knob with position indicator
  • Stepless adjustment from 0 to 10
  • Diagram with setting values
  • Lip seal

Attachments

  • Min/Max actuators: Actuators for switching between minimum and maximum volume flow rate setpoint values
  • Modulating actuators: Actuators for the stepless adjustment of volume flow rates

Materials and surfaces

  • Casing made of galvanised sheet steel
  • Rotary knob, damper blade and bearings made of plastic, flame retardant (V-0) to UL 94

Información técnica

  • Function
  • Technik
  • Quick sizing
  • Specification text
  • Order code
  • Produktbeziehungen
vfr

Functional description

For balancing the volume flow rates of duct sections and air terminal devices the differential pressure must be set on the flow adjustment dampers. The value to be set for a certain required volume flow rate at a given differential pressure can be taken from the diagram that each flow adjustment damper carries. This value can then be set using the rotary knob with the position indicator (stepless adjustment between 0 and 10).

vfr
vfr

 

Circular flow adjustment dampers for the simple balancing of volume flow rates in air conditioning systems, for supply air and extract air, available in 10 nominal sizes.

Suitable for duct pressures up to 1000 Pa.

Ready-to-install unit consists of the casing with damper blade and rotary knob for the stepless adjustment of volume flow rates.

Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180.

Casing air leakage to EN 1751, class C.

Special features

  • Diagram with setting values on each flow adjustment damper
  • Simple retrofit of an actuator is possible

Materials and surfaces

  • Casing made of galvanised sheet steel
  • Rotary knob, damper blade and bearings made of plastic, flame retardant (V-0) to UL 94

Construction

  • Galvanised sheet steel
  • A2: Stainless steel

Technical data

  • Nominal sizes: 80 – 250 mm
  • Volume flow rate range: 9 to 615 l/s or 32 to 2215 m³/h
  • Differential pressure: 20 – 1000 Pa
vfr

Referencias

Hypercube, Moscow, Russia

  • Informations about the Building
Project:
- Hypercube

Field of application:
- Office Building
 
Location:
- Moscow, Russia 
 
TROX-Products:
- Air-water-Systems: Multi-Service-Chilled-Beams, DID312, DID632
- Air diffusor: SL-A, TRS
- Acoustics: CA, MSA
- Control Units: TVJD-Easy, EN-D, VFR

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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.: +54 (11) 4233 5676