CVPF8: Enhanced Constant Volume Regulator in a Side Exit Box

CVPF8 SubmittalCFM Adjustment PictureCVP Plus Attribute PageCVP Performance CurvesCVP Selection GuideConstant Volume Slide Deck


The CVR Plus is an enhanced Constant Volume Regulator. It
provides a pressure-independent, maximum flow across a wide range of airflow conditions.

The CVR Plus has an innovative  spring-loaded damper blade that reacts to the velocity of the air moving through it. As the velocity increases, the blade moves toward closed to block free area and deliver only the desired amount of air. The CVR Plus uses no electricity and saves significant money by minimizing conditioned air exchange to acceptable limits. It creates comfort by allowing only the optimum amount of air to be delivered or extracted.

It can be used in any application where calibrated maximum flow is desired: supply or exhaust, commercial or residential. Improve IAQ by bringing in a measured amount of fresh outside air. The CVR Plus is molded from anti-microbial resins so it resists the growth of mold or bacteria, further promoting IAQ.

Adjustments are made by sliding the adjustment arm across the face of the regulator. Calibrated in CFM.  See “CFM Adjustment Picture” in Resources.

The CVR Plus pressure range0.2 to 2.0 InWC.

The CVPF8 features a heavy duty 24 gauge galvanized steel enclosure 8” or 10″ tall to accommodate a fire damper. See CVPF8 Drawing for
Dimensions. Custom sizes are available.
Now Available with a White Aluminum Grille (40 degree Fixed Vanes)




Additional information

Housing Material

Anti-Microbial ABS

Sheet Metal Fitting 2" Deep

24 ga.

Pressure Range

0.2 to 2.0 InWC

CVP04 (4" Size)

25 to 130 CFM

CVP05 (5" Size)

25 to 130 CFM

CVP06 (6" Size)

50 to 275 CFM

Perimeter Gasket

T-Shaped for a snug fit

Country of Origin

100% American Made

UL 2043 Tested and Classified

Heat release rate and smoke optical density

Lab Calibrated Adjustment Slider

ANSI/AMCA 500-D-12

Blanket Style Ceiling Radiation Damper Available 3hr @165 UL 555C

Reading ± 10% of the Set-Point
California State Fire Marshal Listed

Fire or Radiation Damper

Grille or Not

Supply or Exhaust