Young Regulator Co.
7100 Krick Rd • Walton Hills, OH 44146
P: 440-232-9700 • F: 440-232-8266
www.youngregulator.com
Submit CVR-SRFXX
CVR-SFXX or CVR-RFXX
Constant Volume Regulator in deep
enclosure, accommodates a fire damper
Application and Design
Constant Volume Regulators (CVR) are designed to limit the airflow into
or out of a space. They feature a specifically engineered free area and
a wing-like damper (Aero-Gate). When pressure increases, the increased
flow causes the Aero-Gate to rise and block more of the free area. The
CVR is adjustable to provide various maximum flow profiles over its rated
pressure range. (See reverse for performance curves) The product is
precision molded of fire resistant plastic and have been used in Europe
for years. They are starting to gain a larger market in North America as well. Constant
Volume Regulators may contribute to meeting coveted USGBC Leed Building Certification.
The CVR-SFXX (supply) and the CVR-RFXX(return) feature the regulator mounted in a rugged
26 gauge galvanized steel enclosure with enough space for a fire damper. The standard square sizes provide for more
aesthetic flexibility and reduce costs. For applications that require the use of fire/radiation dampers the CVR-SFXX
(supply) and the CVR-RFXX are the perfect solutions. Control the volume of air while ensuring that smoke is not allowed
Front View
Side Veiw
Duct Collar
into or out of the space.
B
E
C
SIZE INFORMATION
Diameter
4” (Adjustable)
5” (Adjustable)
6” (Adjustable) Low
6” (Adjustable) High
8” (Adjustable)
10” (Adjustable)
D
Flow (@ 0.2inWC-0.8WC)
10 to 30 CFM or 30 to 60 CFM
30 to 60 CFM
60 to 105 CFM
105 to 175 CFM
175 to 300 CFM
300 to 420 CFM
STANDARD CONSTRUCTION
Construction
Safety Ratings
Sheet Metal
Color
QUANTITY
Molded in a specialty
engineered ABS plastic
European Fire and Smoke
rated M1. (See UL94V-0, and
UL2043)
26 gauge galvanized steel
Black
SIZE
A
B
3/4” Mounting Flange (typical 4 plcs)
CVR
ENCLOSURE LENGTH
*
DIAMETER (A)
WIDTH (B)
4
6x6
5
8x8
6
8x8
8
10 x 10
10
12 x 12
* All Dimensions in inches
NOTES
PROJECT
LOCATION
CONTRACTOR
DESIGN SPECIFIER
Fire Damper
(by Others)
ENCLOSURE
DEPTH (C)
5.25
5.25
5.25
5.25
5.25
CVR installed
COLLAR
DEPTH (D)
3.5
3.5
4.5
4.5
6.0
TOTAL
DEPTH (E)
8.75
8.75
9.75
9.75
11.75
| back |
Constant Volume Regulators Performance Data
The CVR is a precision control. Choose the size to meet your performance criteria. Each diameter regulator is adjustable
over a range of flow rates. Choose the correct part from the table below. Ensure that both fitting diameter and flow rates
match your requirements.
Adjustment Process
Constant Volume Regulator (CVR)
Adjustment
Scales
Regulator Body
Aero-Gate
Young
Nominal
Flow Range Noise Body Diameter/ Length
Regulator Part # Diameter (in)
(CFM)
dB(A)
Gasket (in)
(in)
CVR-04-L
4
10-30
26-38
3.74/4.12
2.73
CVR-04
4
30-60
26-44
3.74/4.12
2.73
CVR-05
5
60-105
33-47
4.68/5.06
3.47
CVR-06-L
6
60-105
33-47
5.69/6.07
3.55
CVR-06
6
105-175
34-45
5.69/6.07
3.55
CVR-08
8
175-300
33-53
7.41/7.79
3.55
CVR-10
10
300-420
46-55
9.56/9.94
4.95
Custom
Other Profiles available. Contact the factory for custom orders!
Edge Seal
Adjustment
Screw(s)
1. Select the maximum flow rate
(in CFM) from the Performance
Curve table (right).
2. Note the Adjust Scale number
next to the desired flow.
3. Loosen the adjustment screw
using a Torx® T-10 bit.
4. Adjust the carriage that holds
the Aero-Gate up and down to
line up the top of the Carriage
with the desired Adjust Scale
number.
In the picture the CVR is set to
50 on the Adjust Scale. That
equates to 30 CFM.
5. Retighten Adjustment Screw.
Finger tight is sufficient. Do
not over-tighten the screw(s).
Constant Volume Regulator
Combined Performance Curves
CFM
235
224
212
200
188
177
165
153
141
129
118
106
94
82
71
59
47
35
24
12
0
Adjust
Scale
400
0 to 220 CFM
Adjust
CFM Scale
220 to 500 CFM
500
780
200 CFM
380
447 760
360
436 740
410 CFM
175
340
424 720
320
412 700
160
380
300
400 680
280
388 660
140
260
377 640
353
240
365
620
125
220
353 600
325
200
341 580
105
180
330 560
88
160
318 540
300
140
306 520
71
120
294 500
60
100
283 480
53
265
80
271 460
45
35
60
259 440
30
235
40
247 420
25
18
20
235 400
15, 9
0
224 380
0.2
0.4
0.6
0.8 1.0
0.2
0.4
0.6
0.8
1.0
Pressure Drop (inWC)
Pressure Drop (inWC)

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