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944
DPL418
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Flange Bolt Tightening Sequence
(Use appropriate gaskets and bolts)
4 Bolt
8 Bolt
12 Bolt
See page 945 for drilling dimensions
Flange Diagrams
Threaded Applications
Welded Applications
Threaded Flange
with raised face
Slip-On Flange
with raised face
Weld Neck Flange
with raised face
Floating Applications
(flange free to swivel)
Slip-On Flange
with raised face
Lap-Joint Flange
Dimensions of 150 LB. ASA Steel Flanges
1
1/16" raised face is included in the thickness
Nominal
Pipe Size
Flange
OD
Thickness
1
OD of
Raised Face
Diameter of
Bolt Circle
Number of
Bolts
Diameter of
Bolt Holes
Diameter of
Bolts
1"
4-1/4"
9/16"
2"
3-1/8"
4
5/8"
1/2"
1-1/4"
4.62"
5/8"
2-1/2"
3-1/2"
4
5/8"
1/2"
1-1/2"
5"
11/16"
2-7/8"
3-7/8"
4
5/8"
1/2"
2"
6"
3/4"
3-5/8"
4-3/4"
4
3/4"
5/8"
2-1/2"
7"
7/8"
4-1/8"
5-1/2"
4
3/4"
5/8"
3"
7-1/2"
15/16"
5"
6"
4
3/4"
5/8"
4"
9"
15/16"
6-3/16"
7-1/2"
8
3/4"
5/8"
5"
10"
15/16"
7-5/16"
8-1/2"
8
7/8"
3/4"
6"
11"
1"
8-1/2"
9-1/2"
8
7/8"
3/4"
8"
13-1/2"
1-1/8"
10-5/8"
11-3/4"
8
7/8"
3/4"
10"
16"
1-3/16"
12-3/4"
14-1/4"
12
1"
7/8"
12"
19"
1 1/4"
15"
17"
12
1"
7/8"
1
listed thickness is for aluminum flanges
Dimensions of Tank Truck Flanges (TTMA Drilling)
Nominal
Pipe Size
Flange
OD
Thickness
1
Diameter of
Bolt Circle
Number of
Bolts
Diameter of
Bolt Holes
Diameter of
Bolts
3"
5-5/8"
3/8"
4-7/8"
8
7/16"
3/8"
4"
6-5/8"
3/8"
5-7/8"
8
7/16"
3/8"
6"
8-7/8"
3/8"
8-1/8"
12
7/16"
3/8"
Flange Dimensions