Face-To-Face Dimensions 
(All dimensions in inches)
Size
ISA-75.03 Integral Flanges
ISA-75.04 Flangeless
ISA-75.12 Screwed-End
ISA-75.20 Separable Flanges
 
.5
.75
1.0
1.5
2.0
2.5
3.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
 
ANSI 123/150
ANSI 250/300
ANSI 600
7.25
7.50
8.00
7.25
7.62
8.12
7.25
7.75
8.25
8.75
9.25
9.88
10.00
10.50
11.25
10.88
11.50
12.25
11.75
12.50
13.25
13.88
14.50
15.50
17.75
18.62
20.00
21.38
22.38
24.00
26.50
27.88
29.62
29.00
30.50
32.25
35.00
36.50
38.25
40.00
41.62
43.62
 
ANSI 150
ANSI 300
ANSI 600
-
-
-
3.00
3.00
3.00
4.00
4.00
4.00
4.50
4.50
4.50
4.88
4.88
4.88
-
-
-
6.50
6.50
6.50
7.62
7.62
7.62
9.00
9.00
9.00
9.56
9.56
9.56
11.69
11.69
11.69
13.31
13.31
13.31
15.75
15.75
15.75
15.75
15.75
15.75
 
ANSI 150/300/600
ANSI Short
ANSI Long
*
6.50
8.12
*
6.50
8.25
*
7.75
8.25
*
9.25
9.88
*
10.50
11.25
*
11.50
12.25
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
 
ANSI 150/300/600
-
-
-
-
-
-
8.50
-
*
9.50
-
*
11.50
-
*
-
-
-
14.00
-
*
17.00
-
*
-
-
-
-
-
-
-
-
-
 -
-
-
-
-
-
-
-
-
-
-
 
 
* Indicates that this dimension is applicable for ANSI 150/300/600 class.
- Does not apply.
NOTE! Some manufacturers will provide separable flange valves with the integral flange face-to-face.