Alan Manufacturing, Inc
3927 East Lincoln Way
Wooster, Ohio US

Phone: (800) 435-2526 or (330) 262-8077
Fax: (877) 333-2526 or (330) 262-1556
Email: alansteel@alanmfg.com
Website: www.alanmfg.com
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The flow regulator RDR is an element placed inside the duct in order to obtain a constant flow within a pressure range from 50 to 250 Pascals.

It is used in air conditioning or ventilation systems either in extraction or blowing mode.
RDR Flow Regulators
Unit of Measure
Items RDR 80 Millimeter (mm) Diameter and 15 to 50 Cubic Meter Per Hour (m³/h) Flow Regulator
9404
RDR 80 Millimeter (mm) Diameter and 15 to 50 Cubic Meter Per Hour (m³/h) Flow Regulator
List Price Quote
 RDR 100 Millimeter (mm) Diameter and 15 to 50 Cubic Meter Per Hour (m³/h) Flow Regulator
9409
RDR 100 Millimeter (mm) Diameter and 15 to 50 Cubic Meter Per Hour (m³/h) Flow Regulator
List Price Quote
 RDR 100 Millimeter (mm) Diameter and 50 to 100 Cubic Meter Per Hour (m³/h) Flow Regulator
9413
RDR 100 Millimeter (mm) Diameter and 50 to 100 Cubic Meter Per Hour (m³/h) Flow Regulator
List Price Quote
 RDR 125 Millimeter (mm) Diameter and 15 to 50 Cubic Meter Per Hour (m³/h) Flow Regulator
9419
RDR 125 Millimeter (mm) Diameter and 15 to 50 Cubic Meter Per Hour (m³/h) Flow Regulator
List Price Quote
 RDR 125 Millimeter (mm) Diameter and 50 to 100 Cubic Meter Per Hour (m³/h) Flow Regulator
9423
RDR 125 Millimeter (mm) Diameter and 50 to 100 Cubic Meter Per Hour (m³/h) Flow Regulator
List Price Quote
Description N/A The flow regulator RDR is an element placed inside the duct in order to obtain a constant flow within a pressure range from 50 to 250 Pascals.

It is used in air conditioning or ventilation systems either in extraction or blowing mode.
Regulator Diameter N/A 80 mm N/A 100 mm N/A 100 mm N/A 125 mm N/A 125 mm
Setting N/A RDR Ø 80 N/A RDR Ø 80 + 1 cale N/A RDR Ø 100 N/A RDR Ø 80 + 2 cales N/A RDR Ø 100 + 1 cale
Flow Range N/A 15 to 50 m³/h N/A 15 to 50 m³/h N/A 50 to 100 m³/h N/A 15 to 50 m³/h N/A 50 to 100 m³/h
Set Flow N/A 50 m³/h N/A 50 m³/h N/A 100 m³/h N/A 50 m³/h N/A 100 m³/h
Maximum Temperature N/A 60 ºC
Material N/A Plastic (Classified M1)
Dimension D1 N/A 76 mm N/A 96 mm N/A 96 mm N/A 120 mm N/A 120 mm
Dimension D2 N/A 76 mm N/A 93 mm N/A 93 mm N/A 117 mm N/A 117 mm
Dimension L N/A 55 mm N/A 70 mm N/A 70 mm N/A 86 mm N/A 86 mm
Components N/A Air Flow Setting Cale (According to the Air Flow) Piece of Regulation Regulator Casing Screw to Fix the Air Flow Sleave with Lip Seal
Intermediary Step N/A 2.5 m³/h N/A 5 m³/h N/A 5 m³/h N/A 5 m³/h N/A 5 m³/h
Sound Power Level at 15 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A 25 dBA N/A 25 dBA N/A N/A 25 dBA N/A
Sound Power Level at 15 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A 29 dBA N/A 29 dBA N/A N/A 29 dBA N/A
Sound Power Level at 15 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A 32 dBA N/A 32 dBA N/A N/A 32 dBA N/A
Sound Power Level at 15 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A 35 dBA N/A 35 dBA N/A N/A 35 dBA N/A
Sound Power Level at 30 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A 26 dBA N/A 26 dBA N/A N/A 26 dBA N/A
Sound Power Level at 30 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A 31 dBA N/A 31 dBA N/A N/A 31 dBA N/A
Sound Power Level at 30 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A 35 dBA N/A 35 dBA N/A N/A 35 dBA N/A
Sound Power Level at 30 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A 38 dBA N/A 38 dBA N/A N/A 38 dBA N/A
Sound Power Level at 45 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A 27 dBA N/A 27 dBA N/A N/A 27 dBA N/A
Sound Power Level at 45 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A 33 dBA N/A 33 dBA N/A N/A 33 dBA N/A
Sound Power Level at 45 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A 36 dBA N/A 36 dBA N/A N/A 36 dBA N/A
Sound Power Level at 45 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A 39 dBA N/A 39 dBA N/A N/A 39 dBA N/A
Sound Power Level at 50 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A 32 dBA N/A 32 dBA N/A N/A 32 dBA N/A
Sound Power Level at 50 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A 37 dBA N/A 37 dBA N/A N/A 37 dBA N/A
Sound Power Level at 50 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A 39 dBA N/A 39 dBA N/A N/A 39 dBA N/A
Sound Power Level at 50 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A 42 dBA N/A 42 dBA N/A N/A 42 dBA N/A
Sound Power Level at 60 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A N/A N/A 32 dBA N/A N/A 32 dBA
Sound Power Level at 60 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A N/A N/A 37 dBA N/A N/A 37 dBA
Sound Power Level at 60 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A N/A N/A 39 dBA N/A N/A 39 dBA
Sound Power Level at 60 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A N/A N/A 42 dBA N/A N/A 42 dBA
Sound Power Level at 75 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A N/A N/A 32 dBA N/A N/A 32 dBA
Sound Power Level at 75 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A N/A N/A 37 dBA N/A N/A 37 dBA
Sound Power Level at 75 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A N/A N/A 40 dBA N/A N/A 40 dBA
Sound Power Level at 75 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A N/A N/A 42 dBA N/A N/A 42 dBA
Sound Power Level at 90 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A N/A N/A 32 dBA N/A N/A 32 dBA
Sound Power Level at 90 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A N/A N/A 38 dBA N/A N/A 38 dBA
Sound Power Level at 90 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A N/A N/A 41 dBA N/A N/A 41 dBA
Sound Power Level at 90 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A N/A N/A 44 dBA N/A N/A 44 dBA
Sound Power Level at 120 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 120 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 120 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 120 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 150 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 150 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 150 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 150 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 180 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 180 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 180 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 180 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 210 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 210 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 210 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 210 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 240 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 240 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 240 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 240 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 270 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 270 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 270 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 270 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 300 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 300 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 300 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 300 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 350 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 350 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 350 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 350 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 400 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 400 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 400 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 400 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 450 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 450 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 450 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 450 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Sound Power Level at 500 Cubic Meter Per Hour (m³/h) Flow and 50 Pascal (Pa) Pressure N/A
Sound Power Level at 500 Cubic Meter Per Hour (m³/h) Flow and 100 Pascal (Pa) Pressure N/A
Sound Power Level at 500 Cubic Meter Per Hour (m³/h) Flow and 150 Pascal (Pa) Pressure N/A
Sound Power Level at 500 Cubic Meter Per Hour (m³/h) Flow and 200 Pascal (Pa) Pressure N/A
Important N/A
  • Self-adjusting on the pressure range 50 to 250 Pa
  • Easy adjustment
  • The requested air flow is fixed by a screwdriver
  • Made in plastic material (classified Ml) and in galvanized steel for sleeves in 160 to 250 mm
  • Use with a maximum temperature of 60 °C
Presentation N/A The self-adjusting flow regulator RDR can be adjusted on sites according to the requested air flow.

The marks on the sides of the opening indicate the settings.
Adjustment N/A Before setting the regulator, it's necessary to calibrate the flow:
  • Unscrew of 1/4 tour with a screwdriver
  • Adjust the mark to the requested flow
  • Screw according to the air flow
Installation N/A The flow regulators are simply fitted into vertical or horizontal ducts. On the horizontal duct, respect the mention «DOWN» indicated at the front of the product. A leap seal ensures the airtightness.

When the flow regulator is associated with a diffuser, the minimum distance between the diffuser and the regulator is at least one Ø in extraction mode and 3 Ø in blowing mode.

When installing, do not touch the piece of regulation.
Maintenance N/A The flow regulator must remain accessible to permit its maintenance.
Characteristics N/A The curves show the flow variations in m³/h of RDR Ø 150, 160 and 200 mm in extraction according to the difference of pressure in Pascal (pressure range of 50 to 250 Pa). The values given are averages which may vary of:
  • + or - 3 m³/h for Air Flow < 50 m³/h
  • + or - 5 % for Air Flow > 50 m³/h
Flow regulators are characterized by their noise level in dB(A).