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Hydraulic Fittings
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Pressure Ratings of SAE Flanges
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Connection type opposite 4-bolt flange connection can de-rate maximum working pressure.
Code 61 SAE J518-1 / ISO 6162-1
Code 62 SAE J518-2 / ISO 6162-2
Dash
Size
Size
Maximum Working Pressure
Fastener Torque
Value
PSI
MPa
Grade 8 UNC
(lb-ft)
-8
½"
5000
35
24
-12
¾"
5000
35
44
-16
1"
4600
32
44
-20
1¼"
4000
28
68
-24
1½"
3000
21
111
-32
2"
3000
21
111
-40
2½"
2500
17.5
111
-48
3"
2300
16
218
-56
3½"
500
3.5
218
-64
4"
500
3.5
218
-80
5"
500
3.5
218
Dash
Size
Size
Maximum Working Pressure
Fastener Torque
Value
PSI
MPa
Grade 8 UNC
(lb-ft)
-8
½"
6000
40
24
-12
¾"
6000
40
44
-16
1"
6000
40
68
-20
1¼"
6000
40
111
-24
1½"
6000
40
218
-32
2"
6000
40
332
-40
2½"
6000
40
380
-48
3"
6000
40
667
Hydraulic 4-Bolt Flange Pipe Socket Weld
Adapters: Code 61/Code 62 Flanges
Port
Size
Pad
Size
Code 61
Carbon Steel
O-ring
Part #
Flat Face
Part #
½"
½"
W4-8-8-U
W61-8-8
¾"
¾"
W4-12-12-U
W61-12-12
1"
1"
W4-16-16-U
W61-16-16
1¼"
1¼"
W4-20-20-U
W61-20-20
1½"
1½"
W4-24-24-U
W61-24-24
2"
2"
W4-32-32-U
W61-32-32
2½"
2½"
W4-40-40-U
W61-40-40
3"
3"
W4-48-48-U
W61-48-48
Port
Size
Pad
Size
Code 62
Carbon Steel
O-ring
Part #
Flat Face
Part #
½"
½"
W59-8-8-U
W60-8-8
¾"
¾"
W59-12-12-U
W60-12-12
1"
1"
W59-16-16-U
W60-16-16
1¼"
1¼"
W59-20-20-U
W60-20-20
1½"
1½"
W59-24-24-U
W60-24-24
2"
2"
W59-32-32-U
W60-32-32
2½"
2½"
W59-40-40-U
W60-40-40
3"
3"
W59-48-48-U
W60-48-48
•
For flange dimensions, diagrams and additional information please reference
dixonvalve.com.
Hydraulic 4-Bolt Flanges