Gage
Size
Visible
Glass
Gage Port C-C
(minimum)
Vessel C-C
(minimun)
     
 
-11
-12
-13
-14
-15
-16
-17
-18
-19
 
-24
-25
-26
-27
-28
-29
 
-36
-37
-38
-39
 
-47
-48
-49
 
-57
-58
-59
 
-68
-69
 
-78
-79
 
-88
-89
 
-98
-99
 
-108
-109

3.75
4.75
5.75
6.75
7.875
9.125
10.25
11.875
12.625
 
15
17.25
19.75
22
25.25
26.75
 
30.375
33.75
38.625
40.875
 
45.5
52
55
 
57.25
65.375
69.125
 
78.75
83.25
 
92.125
97.375
 
105.5
111.5
 
118.875
125.625
 
132.25
139.75
 
5.25
6.25
7.25
8.25
9.375
10.625
11.75
13.375
14.125
 
16.5
18.75
21.25
23.5
26.75
28.25
 
31.875
35.25
40.125
42.375
 
47
53.5
56.5
 
58.75
66.875
70.625
 
80.25
84.75
 
93.625
98.875
 
107
113
 
120.375
127.125
 
133.75
141.25

3.75
4.75
5.75
6.75
7.875
9.125
10.25
11.875
12.625
 
15
17.25
19.75
22
25.25
26.75
 
30.375
33.75
38.625
40.875
 
45.5
52
55
 
57.25
65.375
69.125
 
78.75
83.25
 
92.125
97.375
 
105.5
111.5
 
118.875
125.625
 
132.25
139.75
 

Advantages...

Advantages of “Close Hook-Up” style vs off-the-shelf 
“End Connected” gages are:
•  More visible glass length for established vessel centers
•  Permits use of gage valves with spherical union vessel connections, for much greater
flexibility during fit-up.... the spherical joint overcomes misalignment of fittings, reduces
mechanical stress in piping, insures leak tight joint when a conventional flat union
connection fails to close the gap... useful on horizontal vessels without bridles,
where nozzles are planted “on the hillside” and difficult to plumb.
 

to Size and Specify...

1- 
Choose the row with the largest “Vessel C-C” 
that is equal to or less than the actual vessel 
C-C. Read left for “Gage Size”. Designate 
“CH”  as in R100-39 CH, T100-14 CH etc-
or if preferred  use nine-letter suffix system
2- 
Order by gage size and actual vessel center 
to center. No need to specify Gage Port C-C. 
Actual vessel centers are required by Inferno 
before manufacture.
3- 
Extended Gage Port centers are available to 
match any longer vessel center to center.

Notes...

1-
Dimensions shown are for gages with 1/2” F-NPT ports. Add 
3/8”  for gages with 3/4” F-NPT ports.
2- 
Inferno gage valves: 15A, FT15, FT25,  have 3/4” internal 
offset same as Brand “P” but different from 7/8” in other 
brands.
3-
Offsets Inside vs Outside vs Parallel... Inferno gage valves 
include a 3/4” offset as shown. When the valves are 
configured w offsets “Outside” add 3” to the “Vessel C-C' . If 
valves can be assembled with offsets “Parallel” add 1-1/2” to 
dimension shown. For illustrations of four ways see Inferno 
Drawing A111517.