|
Models
UVC22, UVC23, UVC24, and UVC25—
|
|
|
|
Model
UVC22
|
Model
UVC23
|
|
The
UVC22 volume control damper is designed for all types of round duct
applications such as variable air volume systems, etc. It is available
in 6- through 18-inch diameters. The UVC22HO is available in flat
oval, single-wall, and double-wall constructions. Available in aluminum
and stainless steel.
|
Designed
for volume control and/or shut-off use in round ducts from 12 through
28 inches in diameter, the UVC23 comes with two opposed blades and
covers a range of sizes larger than those available in the UVC22.
It can also be used in applications where limitations in the depth
of space envelope preclude the use of single-blade dampers. For
diameters exceeding 28 inches, see Model UVC24.
|
|
|
|
|
Model
UVC24
|
Model
UVC25
|
|
This
model is designed for two-position or proportional control of low
pressure, low velocity applications where a round damper is required
which exceeds the maximum size limitations of the UVC22 or UVC23.
The UVC24 parallel blade is recommended for constant pressure drop
applications such as fresh and return air dampers. The UVC24 opposed
blade is designed for varying pressure drop applications. Available
in sizes of 20- though 50-inch diameter.
|
The
UVC25 is designed for all types of low leakage in round duct applications.
It is available in 4- through 24-inch diameters. For diameters exceeding
24 inches, contact McGill AirFlow. The UVC25H is available in 6-
through 48-inch diameters. The UVC25D and UVC25HD are available
in double-wall constructions. The UVC25HO is available in flat oval,
single-wall, and double-wall constructions. Available in aluminum
and stainless steel.
|
|
Standard
Specifications for the UVC22 and UVC22H
|
|
Max.
Face Velocity
|
3000
fpm |
|
Max.
Differential
Pressure
|
2
in. wg (UVC22)
4 in. wg (UVC22H) |
|
Max.
Temperature
|
180°F
without seals
150°F with seals |
|
Diameter
|
6"-18"
(UVC22)
6"-48" (UVC22H) |
|
Frame
|
2"
x 1/2" X 14 gauge galvanized steel channel for all UVC22 sizes
and for UVC22H sizes £30".
2" x 1" x 1/8" galvanized steel channel for UVC22H
sizes > 30" - 48".
|
|
Blades
|
16
gauge galvanized steel for all UVC22 sizes and for UVC22H sizes 6"-12".
12 gauge galvanized steel for UVC22H sizes >12"-18".
10 gauge galvanized steel for UVC22H sizes > 18"-48".
UVC22H: stiffeners as required for 4 in. wg pressure. |
|
Axles
|
1/2"
diameter plated steel stub |
|
Bearings
|
Nylon
sleeve with stainless steel thrust washers |
|
Seals
|
Optional |
|
Stops
|
#10
plated sheet metal screws for the open and closed positions |
|
Finish
|
Mill |
|
Actuator
|
An
extendable shaft 6" beyond the frame is standard. Locking manual
quadrant shipped loose. |
|
Standard
Specifications for the UVC23
|
|
Max.
Face Velocity
|
3000
fpm |
|
Max.
Differential
Pressure
|
2
in. wg |
|
Max.
Temperature
|
180°F
without seals
150°F with seals |
|
Diameter
|
12"-28" |
|
Frame
|
2"
x 1/2" X 14 gauge galvanized steel channel
|
|
Innerframe
|
16
gauge galvanized steel angle
|
|
Blades
|
16
gauge galvanized steel |
|
Axles
|
1/2"
diameter plated steel stub |
|
Bearings
|
Nylon
sleeve with stainless steel thrust washers |
|
Seals
|
Optional |
|
Linkage
|
Plated
steel brackets, brass barrels, and a 5/16" diameter plated steel
rod |
|
Stops
|
#10
plated sheet metal screws for the open and closed positions |
|
Finish
|
Mill |
|
Actuator
|
An
extendable shaft 6" beyond the frame is standard. Locking manual
quadrant shipped loose. |
|
Standard
Specifications for the UVC24
|
|
Max.
Face Velocity
|
3000
fpm |
|
Max.
Differential
Pressure
|
2
in. wg |
|
Max.
Temperature
|
180°F
without seals
150°F with seals |
|
Diameter
|
20"
Par./28" Opp. - 50" |
|
Frame
|
2"
x 1/2" X 14 gauge galvanized steel channel
|
|
Innerframe
|
14
gauge galvanized steel angle
|
|
Blades
|
16
gauge galvanized steel |
|
Axles
|
1/2"
diameter plated steel stub |
|
Bearings
|
Nylon
sleeve with stainless steel thrust washers |
|
Seals
|
Optional |
|
Linkage
|
Plated
steel brackets, brass barrels, and a 5/16" diameter plated steel
rod |
|
Finish
|
Mill |
|
Actuator
|
An
extendable shaft 6" beyond the frame is standard. Locking manual
quadrant shipped loose. |
|
Standard
Specifications for the UVC25/UVC25D and UVC25H/UVC25HD
|
|
Max.
Face Velocity
|
3000
fpm |
|
Max.
Differential
Pressure
|
6
in. wg (UVC25/UVC25D)
4 in. wg (UVC25H/UVC25HD) |
|
Max.
Temperature
|
150°F
|
|
Diameter
|
4"-24"
(UVC25/UVC25D)
6"-48" (UVC25H/UVC25HD) |
|
Frame
|
20
gauge galvanized steel 10" deep for UVC25D sizes £
18".
18 gauge galvanized steel 10" deep for UVC25D sizes >18"
18 gauge galvanized steel 10" deep for UVC25D reinforced with
2" x 1/2" x 14 gauge galvanized steel channel for UVC25HD
sizes £ 30".
2" x 1" x 1/8" galvanized steel channel for UVC25HD
sizes > 30"-48".
|
|
Blades
|
Double
thickness galvanized steel, 14 gauge equivalent thickness for all
UVC25D sizes.
16 gauge galvanized steel for UVC25HD sizes 6"-12".
12 gauge galvanized steel for UVC25HD sizes > 12"-18".
10 gauge galvanized steel for UVC25HD sizes >18"-48".
UVC25HD: sitffeners as required for 4 in. wg pressure. |
|
Axles
|
1/2"
diameter galvanized or plated steel |
|
Bearings
|
Oil
impregnated bronze (UVC25/UVC25D)
Stainless Steel (UVC25H/UVC25HD) |
|
Seals
|
UVC25D:
neoprene, one-piece, enclosed in a two-piece blade construction
UVC25HD: EPT at perimeter. |
|
Stops
|
#10-16
bolt with locknut at open and closed (UVC25/UVC25D)
Pin stops (UVC25H/UVC25HD)
|
|
Finish
|
Mill |
|
Actuator
|
An
extendable shaft 6" beyond the frame is standard. Locking manual
quadrant shipped loose. |
|
 |
|
