Spiral Duct and Fittings Construction Standards
[Pages:15]Single Wall Round
Air Distribution Corporation
Spiral Duct and Fittings Construction Standards
Air Distribution Corporation Spiral Duct and Fittings are manufactured in accordance with applicable SMACNA, ASHRAE and SPIDA standards.
Galvanized or Stainless Steel Gauge Table for 2005 SMACNA Duct Standard up to 10" W.G. Static Pressure
Gauge Schedule
Gauge Schedule
Size Dia.
Spiral Pipe
Size Dia.
Fittings
3" - 16"
26
3" - 12"
26
18" - 26"
24
14" - 24"
24
28" - 40"
22
26" - 36"
22
42" - 50"
20
38" - 48"
20
52" - 84"
18
50" - 84"
18
Up to 2" W.G. Fittings conform to SMACNA seal Class "C" construction Up to 10" W.G. Fittings conform to SMACNA seal Class "A" construction
Aluminum Gauge Table for 2005 SMACNA Duct Standard up to + 2" W.G. & - 2" W.G. Static Pressure
Aluminum Thickness
Size Dia.
Spiral Pipe
Aluminum Thickness
Size Dia.
Fittings
3" - 14"
.032
3" - 14"
.040
16" - 26"
.040
28" - 36"
.050
16" - 26"
.050
28" - 36"
.063
38" - 50"
.063
38" - 50"
.071
52" - 60"
NA
52" - 60"
.090
Fittings conform to SMACNA seal Class "C" construction
Gauge
26 24 22 20 18 16
Thickness/Weight Relationships of Standard Materials
Galvanized Steel
Nominal Thickness (inches)
0.0217 0.0276 0.0336 0.0396 0.0516 0.0635
Nominal Weight (lb/sq ft)
0.906 1.156 1.406 1.656 2.156 2.656
Stainless Steel (304 or 316)
Nominal Thickness (inches)
Nominal Weight (lb/sq ft)
0.0188
0.788
0.0250
1.050
0.0313
1.313
0.0375
1.575
0.0500
2.100
0.0625
2.625
Aluminum 3003-H14
Nominal Thickness (inches)
Nominal Weight (lb/sq ft)
0.025
0.356
0.032
0.456
0.040
0.570
0.050
0.713
0.063
0.898
0.080
1.140
ASTM Material Specifications
Standard Material
ASTM Number
Galvanized Steel
A653, A924
Stainless Steel
A240
Aluminum
B209
1
Air Distribution Corporation
Single Wall Round
Dimensional Code & Ordering Information
DIMENSIONING CODE
All dimensions are in inches, all angles are in degrees A - Main barrel inlet diameter B - Main barrel outlet diameter C or D - Branch tap diameter (Note: On tee and lateral fittings with two taps, C
is the branch closest to the inlet of the fitting. On cross fittings, C is the larger of the two taps. R - Center Line Radius V - Body length of fitting H - See Loloss Tee
ORDERING
Specify type of fittings and list the following dimensions:
ELBOWS
- A, R
TEES
- A, C, (B, D)
LATERALS - A, C, (B, D)
CROSSES
- A, C, D, (B)
ACCESSORIES - As Noted
All fittings, unless noted, are sized as a male part on each end for a slip joint assembly with spiral pipe.
For flanged fittings see connectors detail for all dimensioning.
2
Air Distribution Corporation
90? DIE STAMPED ELBOW 3" DIA. THRU 12" DIA.
E90P
2" A
Single Wall Round
ELBOWS
45? DIE STAMPED ELBOW 3" DIA. THRU 12" DIA.
E45P
2" A
90?
45?
90? 5-PC ELBOW
E905
R=1.5 x A
2" A
45? 3-PC ELBOW
E453
R=1.5 x A
2" A
90?
45?
R=1.5 x A
R=1.5 x A
90? 2-PC MITRED ELBOW
EM90
2" 2" 2"
A
No. of vanes
3-9 2
10-14 3
15-19 4
20-60 5
2"
CUSTOM ELBOW
XELB
A
*
R=1.5 x A
A
*SPECIFY (Elbow Angle & Radius of Centerline
3
Air Distribution Corporation
STRAIGHT TEE
T
2" 4"
2"
A
C
2"
2"
V=C+4"
2"
Single Wall Round
STRAIGHT TEES
REDUCING TEE
TR
C
2" 4"
2"
A
L= A - B 4" MINIMUM
2" 2"
B
2"
V=C+4"
L
TEE CROSS
TX
C
2" 4"
2"
2"
A
V=C+4"
REDUCING TEE CROSS
TXR
C
2" 4"
L= A - B 4" MINIMUM
2"
2"
2"
A
V=C+4"
B
2"
2"
2"
D
D
C>D
L
C>D 4
Air Distribution Corporation
CONICAL TEE
TC
C
2"
4" 1"
1"
2"
2"
A
2"
V=C+6"
2"
Single Wall Round
CONICAL TEES
REDUCING CONICAL TEE
TCR
C
2"
4" 1"
2"
A
L= A - B 4" MINIMUM
1" 2"
2"
B
2"
V=C+6
L
CONICAL TEE CROSS
TXC
C
2"
4" 1"
1"
2"
2"
A
V=C+6"
2" 1"
1" 2"
C>D
D
REDUCING CONICAL TEE CROSS
TXCR
C
2"
4" 1"
1"
2"
2"
A
V=C+6
L= A - B 4" MINIMUM
2"
B
2" 1"
1" L
C>D
D
5
Air Distribution Corporation
45? LATERAL
L
Single Wall Round
STRAIGHT LATERAL
45? REDUCING LATERAL
LR
L= A - B 4" MINIMUM
2"
C
2"
C
4"
2"
2"
A
2"
A
4" 2"
2"
B
2"
V=(Cx1.414)+4"
2"
2"
V=(Cx1.414)+4"
L
45? LATERAL CROSS
LX
2"
C
4"
2"
2"
A
V=(Cx1.414)+4"
2"
C>D
2" 4"
D
2"
45? REDUCING LATERAL CROSS
LXR
2"
L= A - B 4" MINIMUM
C
4"
2"
2"
A
V=(Cx1.414)+4"
2"
B
2"
4"
L
C>D
2"
D
6
Air Distribution Corporation
LOLOSS TEE
TL
H 2" 2"
C
2" H 2" 2"
A
Single Wall Round
LOLOSS TEES
REDUCING LOLOSS TEE
TLR
H
C
L= A - B 4" MINIMUM
2"
2" 2"
H 2" L
2"
A
B
V=C+H+4"
LOLOSS TEE CROSS
TLX
H
C
C
H
3 thru 8 4"
9 thru 16 6"
17 thru 26 10"
27 and up 12"
2"
V=C+H+4"
REDUCING LOLOSS TEE CROSS
TLXR
H
C
C
H
3 thru 8 4"
9 thru 16 6"
17 thru 26 10"
27 and up 12"
L= A - B 4" MINIMUM
2"
2" 2"
H 2" 2"
2" 2"
H 2" L
2"
A
V=C+H+4"
A
V=C+H+4"
B
C, D H 3 thru 8 4" 9 thru 16 6" 17 thru 26 10" 27 and up 12"
H 2"
D C>D
C>D
H
2"
C, D H
D
3 thru 8 4"
9 thru 16 6"
17 thru 26 10"
27 and up 12"
7
Air Distribution Corporation
CONCENTRIC REDUCER
RC
2"
V
Single Wall Round
MISCELLANEOUS
V=A-B 4" MINIMUM
2"
ECCENTRIC REDUCER
RE
2"
V
V=A-B 4" MINIMUM
2"
A
B
A
B
PIPE COUPLING MALE
NP
2" 2"
A
FITTING COUPLING
FCL
2" 2"
A
ROUND BALANCING DAMPER
RBD
END CAP
ES
8"
2"
A
A
2"
2"
8
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