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CONSTANTFLOW


Regulators and limiters for supply or exhaust air of constant volume flow systems

Constant volume flow regulators facilitate commissioning in constant systems (CVS). The desired air flow is set on an external scale ( Type RN/EN) Thus there is no other complex or time-consuming calibration required.

Type EN

EN
  • Rectangular mechanical automatic controller
  • Factory functional testing of each unit
  • No on-site calibration required
  • Units are essentially ready for commissioning after installation

more details

square, rectangular

40 – 3,360 l/s
144 – 12,096 m³/h
85 – 7,120 cfm
Δp: 50 – 1,000 Pa

W: 200 – 600 mm
H: 100 – 600 mm

Type RN

RN
  • Circular mechanical automatic controller
  • Factory functional testing of each unit
  • No on-site calibration required
  • Units are essentially ready for commissioning after installation

more details

circular

11 – 1,400 l/s
40 – 5,040 m³/h
23 – 2,966 cfm
Δp: 50 – 1,000 Pa

Ø 80 – 400 mm

Casing air leakage flow rate complies with DIN EN 1751, class A

Type RNS

RNS 125
  • Circular mechanical automatic controller for low false ceilings
  • Factory functional testing of each unit
  • No on-site calibration required
  • Units are essentially ready for commissioning after installation

more details

circular

11 – 140 l/s
40 – 504 m³/h
23 – 297 cfm
Δp: 50 – 1,000 Pa

Ø 80 – 125 mm

Casing air leakage flow rate complies with DIN EN 1751, class A

Type VFC

VFC
  • Circular volume flow controller for low velocities
  • Suitable for constant and variable volume flow systems
  • Selection according to nominal size of the duct system
  • Commissioning in one step
  • Flow rate adjustment without special tools
  • Retrofit of actuator easily possible


more details

circular

6 – 370 l/s
20 – 1,332 m³/h
13 – 784 cfm
Δp: 30 – 500 Pa

Ø 80 – 250 mm

Casing air leakage flow rate complies with DIN EN 1751, class A

Type VFL

VFL
  • Mechanical system-powered volume flow limiter
  • High control accuracy of ± 10 %, relative to Vnominal
  • Easy installation into round air ducting
  • Can be installed in any orientation

more details

circular

4 – 250 l/s
15 – 900 m³/h
8 – 530 cfm
Δp: 30 – 300 Pa

Ø 80 – 250 mm

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Installation Examples

Clifford Chance

Clifford Chance, Canary Wharf

TROX supplied in excess of 2400 fan boxes, plus associated grilles and diffusers, in a contract value worth more then £1m.
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Contact

Thetford Main Offices Small

TROX UK Ltd

Caxton Way, Thetford
Norfolk IP24 3SQ
Tel: +44 (0)1842 754545
Contact and locations