FNW 74A User Manual
Figure 74A
Figure Number Matrix
PIPING PRODUCTS
150# AQUATHERM DUCTILE IRON
BACK-UP FLANGES
Features
• 150# Flange Drilling
• Cast Ductile Iron
• IPS Sizes
• Finishes:
○ Green Epoxy Coating
○ Sizes 1 to 24 Inch
Standards
• Material: ASTM A536 grade 65-45-12
• Hardness: ISO 1083
• Finish:
○ 1 mil Epoxy Coating
Physical Properties
• Tensile Strength: 65 KSI Minimum
• Yield Strength: 45 KSI Minimum
• Elongation: 12% Minimum
• Hardness: HBW 160-210 (Brinell)
FNW Figure Size
FIGURE
74A
1 = G
1-1/4 = H
1-1/2 = J
2 = K
2-1/2 = L
3 = M
4 = P
SIZE CODE
5 = S
6 = U
8 = X
10 = 10
12 = 12
14 = 14
16 = 16
18 = 18
20 = 20
24 = 24
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Figure 74A
Tolerances
-0 -0 -0.059 -0.059 -0
PIPING PRODUCTS
150# AQUATHERM DUCTILE IRON
BACK-UP FLANGES
ØID
N
ØID
BC
ØOD
Dimensions (inches)
Size ØOD ØID T BC BH N Wt.(lbs)
1 4.25 1.73 0.625 3.12 0.63 4 1.7
1-1/4 4.62 2.11 0.625 3.50 0.63 4 1.9
1-1/2 5.00 2.52 0.625 3.88 0.63 4 2.2
2 6.00 3.15 0.625 4.75 0.75 4 3.0
2-1/2 7.00 3.71 0.625 5.50 0.75 4 4.2
3 7.50 4.39 0.625 6.00 0.75 4 4.9
3-1/2 8.50 5.33 0.625 7.00 0.75 8 5.5
4 9.00 5.38 0.625 7.50 0.75 8 6.7
6 11.00 7.13 0.688 9.50 0.88 8 9.0
8 13.50 9.50 0.688 11.75 0.88 8 12.2
10 16.00 11.40 0.75 14.25 1.00 12 19.2
12 19.00 13.50 0.875 17.00 1.00 12 32.2
14 21.00 14.80 0.875 18.75 1.13 12 39.9
16 23.50 16.90 0.875 21.25 1.13 16 46.4
18 25.00 18.90 0.875 22.75 1.13 16 45.6
20 27.50 20.80 1 25.00 1.13 20 62.4
24 32.00 25.00 1.125 29.50 1.38 20 86.4
BH
T
ID 3”-4”: +.098 -0
ID 6”-8”: +.110 -0
Dimension T
Tolerances
DOC: FNW74A Ver. 10/2016
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The contents of this publication are presented for information purposes only, and while effort has been made to ensure their accuracy, they are not to be construed as
warranties or guarantees, expressed or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and
conditions, which are available on request. We reserve the right to modify or improve the designs or specications of our products at any time without notice. Always
verify that you have the most recent product specications or other documentation prior to the installation of these products.
+0.12 +0.079 +0.059 +0.079 +0.079
ID 10”-14”: +.126 -0
ID 16”-20” + 0.42 - 0
ID 24”: + .157 -0
ID BC OD
BC 10”-12”: ± .079
BC 14”-24”: ± .098
OD 12”-24”: ± .120
BH
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