5
Gage
Size
Visible
Glass
Gage Port C-C
(minimum)
Vessel C-C
(minimun)
     
         

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.

6

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.
             
-11
3.75
5.25
3.75
 
-12
4.75
6.25
4.75
 
-13
5.75
7.25
5.75
 
-14
6.75
8.25
6.75
 
-15
7.875
9.375
7.875
 
-16
9.125
10.625
9.125
 
-17
10.25
11.75
10.25
 
-18
11.875
13.375
11.875
 
-19
12.625
14.125
12.625
 
 
-24
15
16.5
15
 
-25
17.25
18.75
17.25
 
-26
19.75
21.25
19.75
 
-27
22
23.5
22
 
-28
25.25
26.75
25.25
 
-29
26.75
28.25
26.75
 
 
 
-36
30.375
31.875
30.375
 
-37
33.75
35.25
33.75
 
-38
38.625
40.125
38.625
 
-39
40.875
42.375
40.875
 
 
-47
45.5
47
45.5
 
-48
52
53.5
52
 
-49
55
56.5
55
 
 
-57
57.25
58.75
57.25
 
-58
65.375
66.875
65.375
 
-59
69.125
70.625
69.125
 
 
-68
78.75
80.25
78.75
 
-69
83.25
84.75
83.25
 
 
-78
92.125
93.625
92.125
 
-79
97.375
98.875
97.375
 
 
-88
105.5
107
105.5
 
-89
111.5
113
111.5
 
 
-98
118.875
120.375
118.875
 
-99
125.625
127.125
125.625
 
 
-108
132.25
133.75
132.25
 
-109
139.75
141.25
139.75