User Guide
Copyright 2010, Schneider Electric
All brand names, trademarks and registered 
trademarks are the property of their respective 
owners. Information contained within this 
document is subject to change without notice.
F-27194-5
www.schneider-electric.com/buildings
Schneider Electric
1354 Clifford Avenue
P.O. Box 2940
Loves Park, IL 61132-2940
On October 1st, 2009, TAC became the Buildings business of its parent company Schneider Electric. This document reflects the visual identity of Schneider Electric, 
however there remains references to TAC as a corporate brand in the body copy. As each document is updated, the body copy will be changed to reflect appropriate 
cor
p
orate brand chan
g
es. 
A
C
D
B
E
Figure-6 Flange Dimensions
Table-9 Flange Detail for American Standard 125 psi Cast Iron Pipe Flanges (Figure-6)
Nominal Pipe 
Size
Flanges Drilling Bolting
Length of 
Machine Bolts
E
Flange 
Diameter
A
Flange 
Thickness
B
Diameter of 
Bolt Circle
C
Diameter of 
Bolt Holes
D
Number of 
Bolts
Diameter of 
Bolts
2-1/2” 7” 11/16” 5-1/2”
3/4”
4
5/8”
2-1/2”
3” 7-1/2” 3/4” 6”
4” 9”
15/16”
7-1/2”
8
3"
5" 10" 8-1/2"
7/8" 3/4"
6" 11" 1" 9-1/2" 3-1/4"










