Manson Pipe Insulation R-Value (hrft2°F/Btu)

Manson Pipe Insulation R-Value (hr*ft2*°F/Btu)
Insulation, nominal thickness
IPS
½"
¾"
1"
1¼"
1½"
2"
2½"
3"
3½"
4"
4½"
5"
6"
7"
8"
9"
10"
11"
12"
14"
15"
16"
17"
18"
19"
20"
21"
22"
23"
24"
Outer Diameter
0.840"
1.050"
1.315"
1.660"
1.900"
2.375"
2.875"
3.500"
4.000"
4.500"
5.000"
5.563"
6.625"
7.625"
8.625"
9.625"
10.750"
11.750"
12.750"
14.000"
15.000"
16.000"
17.000"
18.000"
19.000"
20.000"
21.000"
22.000"
23.000"
24.000"
½" Wall
3.4
3.5
3.1
3.0
2.6
2.8
2.7
2.5
2.5
2.6
2.6
2.6
2.4
2.4
2.4
2.5
2.3
—
—
—
—
—
—
—
—
—
—
—
—
—
1" Wall
7.6
6.2
7.4
5.6
6.4
6.2
6.0
5.6
7.2
5.5
7.0
5.2
4.9
4.8
5.1
5.1
4.7
5.3
5.3
4.6
4.6
4.6
4.6
4.6
4.5
4.5
4.5
4.5
4.5
4.5
1½" Wall
13.6
11.6
12.1
12.0
10.5
10.3
12.1
9.2
10.7
8.7
10.3
8.2
7.8
8.1
7.9
7.8
8.1
8.0
7.9
7.2
7.2
7.1
7.1
7.1
7.0
7.0
7.0
7.0
7.0
6.9
0.225 = Thermal Conductivity (Btu*in)/(hr*ft2*°F)
R-value = (Do/2)*ln(Do/Di)/k, where
Do = Outer Diameter
Di = Inner Diameter
k = Apparent Thermal Conductivity
2" Wall
19.5
17.1
17.5
14.7
18.1
14.9
16.3
13.0
14.5
12.3
13.8
11.5
11.4
11.1
10.9
11.5
11.0
10.8
10.7
9.9
9.8
9.8
9.7
9.7
9.6
9.6
9.6
9.5
9.5
9.5
2½" Wall
—
—
23.8
20.4
23.3
19.5
20.8
17.1
18.6
16.0
18.1
15.6
14.8
14.4
14.9
14.6
14.0
13.8
13.6
12.7
12.6
12.5
12.5
12.4
12.3
12.3
12.2
12.2
12.1
12.1
2" Wall
—
—
29.4
—
28.7
24.4
25.6
21.4
23.4
20.6
22.1
19.3
18.4
18.7
18.3
17.9
17.2
16.9
16.7
15.7
15.6
15.4
15.3
15.2
15.1
15.0
14.9
14.9
14.8
14.7
3½" Wall
—
—
—
—
34.4
29.6
31.2
26.6
27.9
24.8
26.3
23.3
23.1
22.4
21.8
21.3
20.5
20.1
19.8
18.8
18.6
18.4
18.2
18.1
18.0
17.9
17.8
17.7
17.6
17.5
4" Wall
—
—
—
—
41.1
35.8
36.5
31.4
32.6
29.3
26.3
28.5
27.0
26.2
25.4
24.9
23.9
23.5
23.1
21.9
21.7
21.5
21.3
21.1
20.9
20.8
20.7
20.5
20.4
20.3
4½" Wall
—
—
—
—
—
41.7
36.8
36.4
32.6
35.1
31.8
32.8
31.1
30.1
29.2
28.5
27.4
26.9
26.5
25.2
24.9
24.6
24.4
24.2
24.0
23.8
23.6
23.5
23.3
23.2
5" Wall
—
—
—
—
—
47.3
49.0
42.9
38.7
39.9
36.4
37.3
35.4
34.2
33.1
32.3
31.1
30.5
30.0
28.6
28.2
27.9
27.6
27.3
27.1
26.9
26.7
26.5
26.3
26.2
6" Wall
—
—
—
—
—
54.9
60.7
53.8
49.0
50.0
46.0
46.7
44.3
42.6
41.3
40.2
38.7
37.9
37.2
35.6
35.1
34.6
34.2
33.9
33.6
33.3
33.0
32.7
32.5
32.3
4805 Lapiniere Blvd, Suite 3000
Brossard, QC, Canada J4Z 0G2
Telephone: (800) 626-7661
Fax:
(450) 443-0068
www.imanson.com

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