eFlow-MAX High Capacity Constant Airflow Regulator


eFlow-MAX is a field adjustable High Capacity Constant Airflow Regulator. This round damper is designed to provide automatic, precise, balanced pressure-independent maximum constant airflow in round duct systems without use of electricity, sensors or controls.

Operating Pressure Range 0.2 to 4.o in w.g. (50-1000 Pa)


Equal to American aldes mr max high capacity constant airflow regulator, Young regulaor constant volume damper cvdxx .


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● Diameters offered: 3”, 4″, 5”, 6”, 8″, 10″, 12”, 14”, 16″
● Operating Pressure Range: 0.2 to 4.0 in w.g. (50-1000Pa)
● Airflow settings: 24-2335 CFM
● Temperature Limits: -22° to 212°F (-30° to 100°C)
● Suitable for both supply and exhaust applications
● No external power supply needed
●Factory calibrated
● Field Adjustable CFM setpoint
● Capable of maintaining constant airflow within + 10% for nominal airflow > 60
CFM (100 m3/h) and + 5 CFM (10 m3/h) for nominal airflow < 60 CFM. (100 m3/h) throughout the target operating pressure range of 0.2 to 4.0 in.
w.g. (50 to 1000 Pa).
● Optimum air velocity: 885 FPM (4.5 m/s) and it should not drop below 530 FPM (2.7 m/s)
● Sound power levels shall not exceed those for each size and CFM rating as
● Laser-welded, heavy galvanized steel body, plastic airflow control and air
tightness seal to ensure no-leak fit
● Available in stainless steel
● Energy efficient
● Ideal solution for meeting rooms, classrooms, concert halls, etc.
● Maintenance free and corrosion-proof under normal conditions

Eaqual to American aldes mr max high capacity constant airflow regulator, Young regulaor constant volume damper cvdxx 


Energy Efficiency Programs
Subsidized Housing Projects
Government Facilities
Military facilities
High Rises
Commercial Buildings
Residential Buildings
Assisted Living Facilities
Dormitories and Schools Buildings
Office buildings
Balancing airflow supply from roof-top A/C units
Balancing supply and exhaust of heat recovery ventilation systems
Regulating outdoor air-supply into individual room fan coil units or heat pumps
Balancing airflow on series-fan-powered terminal unit system


Guaranteed for 6 years, from date of shipment, against all defects in material, provided material has been installed and used under normal conditions.


Additional information

Weight 8 lbs
Dimensions 8 × 8 × 8 in

eFlow-MAX 3” Airflow Range 24-75 CFM, eFlow-MAX 4” Airflow Range 40-130 CFM, eFlow-MAX 5” Airflow Range 60-165 CFM, eFlow-MAX 6” Airflow Range 100-265 CFM, eFlow-MAX 8” Airflow Range 150-530 CFM, eFlow-MAX 10” Airflow Range 295-940 CFM, eFlow-MAX 12” Airflow Range 470-1650 CFM, eFlow-MAX 14” Airflow Range 530-1885 CFM, eFlow-MAX 16” Airflow Range 590-2355 CFM