Side or Back Connected Gages with Valves: Offsets INSIDE

Figure 5-3 Vessel connection made behind Gage Face

Figure 5-4 Vessel connection made 90° to Gage Face

Use SIDE or BACK connected gages to get more visible glass length in a limited Valve C-C distance. The Table below shows the Valve Centers obtained by putting the gage port centers as close together as possible and using 3/4" internal offset gage valves with offsets turned towards each other (Inside). Use the following formula to calculate Valve Centers using other gage port centers or other valves: (A) Gage Port Centers - (F x 2) Valve Offset x 2 = (C) Valve Centers (offsets pointed INSIDE) F = Valve Offset = 3/4" for Model 15A and 25P Gage Valves. This dimension is used in Table below. Other valves with 7/8" offset (15J, 25J) require 1/4" adjustment. See note above Table. Use either Single Union or Double Union valves, C-C is same. Subtract 1/4" (6.3mm) when using valves with 7/8" internal offset

Gage Size		Visible Length			STANDARD VALVE CENTERS — Offsets INSIDE
					with 1/2" F-NPT or S/W ports on Side or Back of Gage			with 3/4" F-NPT or S/W ports on Side or Back of Gage
# sections	Nominal Glass Size				(C1') Valve Centers			(C2') Valve Centers
		inches	(mm)		inches	(mm)		inches	(mm)
1	1	3.75	95		3.75	95		4.125	105
1	2	4.75	121		4.75	121		5.125	130
1	3	5.75	146		5.75	146		6.125	156
1	4	6.75	171		6.75	171		7.125	181
1	5	7.875	200		7.875	200		8.25	210
1	6	9.125	232		9.125	232		9.5	241
1	7	10.25	260		10.25	260		10.625	270
1	8	11.875	302		11.875	302		12.25	311
1	9	12.625	321		12.625	321		13	330
2	4	15	381		15	381		15.375	391
2	5	17.25	438		17.25	438		17.625	448
2	6	19.75	502		19.75	502		20.125	511
2	7	22	559		22	559		22.375	568
2	8	25.25	641		25.25	641		25.625	651
2	9	26.75	679		26.75	679		27.125	689
3	6	30.375	772		30.375	772		30.75	781
3	7	33.75	857		33.75	857		34.125	867
3	8	38.625	981		38.625	981		39	991
3	9	40.875	1038		40.875	1038		41.25	1048
4	7	45.5	1156		45.5	1156		45.875	1165
4	8	52	1321		52	1321		52.375	1330
4	9	55	1397		55	1397		55.375	1407
5	7	57.25	1454		57.25	1454		57.625	1464
5	8	65.375	1661		65.375	1661		65.75	1670
5	9	69.125	1756		69.125	1756		69.5	1765
6	8	78.75	2000		78.75	2000		79.125	2010
6	9	83.25	2115		83.25	2115		83.625	2124
7	8	92.125	2340		92.125	2340		92.5	2350
7	9	97.375	2473		97.375	2473		97.75	2483
8	8	105.5	2680		105.5	2680		105.875	2689
8	9	111.5	2832		111.5	2832		111.875	2842
9	8	118.875	3019		118.875	3019		119.25	3029
9	9	125.625	3191		125.625	3191		126	3200
10	8	132.25	3359		132.25	3359		132.625	3369
10	9	139.75	3550		139.75	3550		140.125	3559