
Bulletin 74.1:Y692
8
Table 5. Blanketing Regulating Capacities in SCFH / Nm
3
/h of 0.97 Specic Gravity Nitrogen
- continued -
BODY SIZE
OUTLET PRESSURE
RANGE
(1)
, ACCURACY
AND SPRING COLOR
OUTLET
PRESSURE
SETTING
INLET
PRESSURE
ORIFICE SIZE, IN. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 3/4 / 19 1 / 25 1-3/16 / 30
psig bar SCFH Nm
3
/h SCFH Nm
3
/h SCFH Nm
3
/h SCFH Nm
3
/h SCFH Nm
3
/h SCFH Nm
3
/h
NPS 1-1/2 /
DN 40
1 to 3 in. w.c. /
2 to 7 mbar
-1 to 2 in. w.c. /
-2 to 5 mbar
Brown
1 in. w.c. /
2 mbar
2
5
10
20
40
60
80
100
125
150
0.14
0.34
0.69
1.4
2.8
4.1
5.5
6.9
8.6
10.3
360
680
1030
1580
2500
3410
4320
4510
4510
4510
9.7
18.2
27.6
42.3
67.0
91.4
116
121
121
121
970
1560
2350
3620
3620
3620
26.0
41.8
63.0
97.0
97.0
97.0
1750
2800
4210
4900
4900
46.9
75.0
113
131
131
3280
3880
3880
3700
87.9
104
104
99.2
4750
3650
3650
127
97.8
97.8
3650
2840
97.8
76.1
3 in. w.c. /
7 mba
r
2
5
10
20
40
60
80
100
125
150
0.14
0.34
0.69
1.4
2.8
4.1
5.5
6.9
8.6
10.3
360
680
1030
1580
2500
3410
4320
4510
4510
4510
9.7
18.2
27.6
42.3
67.0
91.4
116
121
121
121
970
1560
2350
3620
3620
3620
26.0
41.8
63.0
97.0
97.0
97.0
1750
2800
4210
4900
4900
46.9
75.0
113
131
131
3280
3880
3880
3700
87.9
104
104
99.2
4750
3650
3650
127
97.8
97.8
3650
2840
97.8
76.1
3 to 11 in. w.c. /
7 to 27 mbar
-1 to 2 in. w.c. /
-2 to 5 mbar
Iridite
7 in. w.c. /
17 mbar
0.5
1
2
5
13
25
50
100
150
0.03
0.07
0.14
0.34
0.9
1.7
3.4
6.9
10.3
330
470
770
1270
1850
3040
5370
6100
8.8
12.6
20.6
34.0
49.6
81.5
144
163
630
950
1580
2590
4100
6100
6100
16.9
25.5
42.3
69.4
110
163
163
870
1300
2520
4900
6100
6100
23.3
34.8
67.5
131
163
163
950
1340
2260
6070
6100
6100
25.5
35.9
60.6
163
163
163
1180
1810
3160
6100
6100
31.6
48.5
84.7
163
163
1330
2290
4730
6100
35.6
61.4
127
163
6.5 in. w.c to 1.2 psig /
16 to 83 mbar, Green or
0.7 to 2 psig /
48 mbar to 0.14 bar, Blue
0.2 psig / 14 mbar
1.5 psig /
0.10 bar
2
6
14
30
50
150
0.14
0.41
0.97
2.1
3.4
10.3
789
1740
3156
4890
7120
18,030
21.1
46.6
84.6
131
191
483
1260
2760
5050
8050
11,990
33.8
74.0
121
216
321
2050
4730
9470
13,360
54.9
127
254
358
2660
9790
12,500
71.3
182
335
3220
7530
86.3
202
1 to 3.2 psig /
69 mbar to 0.22 bar
0.6 psig / 41 mbar
Orange
3 psig /
0.21 bar
3
7
14
30
50
150
0.21
0.48
0.97
2.1
3.4
10.3
1550
2370
4500
7020
17,250
41.5
63.5
121
188
462
2370
3700
7380
10,750
63.5
99.2
198
288
3950
7020
11,680
106
188
313
2450
5130
7470
64.7
137
200
2840
6312
76.1
169
2 to 5.5 psig /
0.14 to 0.38 bar
0.5 psig / 34 mbar
Silver with green stripe
5 psig /
0.34 bar
10
15
20
35
60
75
100
0.69
1.0
1.4
2.4
4.1
5.2
6.9
590
789
950
1420
2210
2760
3550
15.8
21.1
25.5
38.1
59.2
74.0
95.1
950
1030
1380
1970
2920
3470
5130
25.5
27.6
97.0
52.8
78.3
93.0
137
1180
1580
2200
2920
4730
5680
31.6
42.3
59.0
78.3
127
152
1810
2370
2920
4020
48.5
63.5
78.3
108
2200
2840
3310
59.0
76.1
88.7
2370
3310
63.5
88.7
2 to 5.5 psig /
0.14 to 0.38 bar
1 psig / 69 mbar
Silver with green stripe
5 psig /
0.34 bar
10
15
20
35
60
75
100
0.69
1.0
1.4
2.4
4.1
5.2
6.9
950
1180
1380
1970
3160
4100
5130
25.5
31.6
37.0
52.8
84.7
110
137
1500
1890
2200
3310
5290
6390
8680
40.2
50.7
59.0
88.7
142
171
233
2050
2760
3790
5130
7890
10,260
54.9
74.0
102
137
211
275
3230
4100
5130
7730
86.6
110
137
207
4100
5520
6310
110
148
169
4580
6310
123
169
4 to 10 psig /
0.28 to 0.69 bar
1 psig / 69 mbar
Silver
10 psig /
0.69 bar
15
20
25
40
60
75
100
1.0
1.4
1.7
2.8
4.1
5.2
6.9
708
944
1102
1810
2361
2754
3541
19.0
25.3
29.5
48.5
63.3
73.8
94.9
1023
1377
1652
2203
3148
3541
5193
27.4
36.9
44.3
59.0
84.4
94.9
139
1338
1967
2203
2912
4643
5666
35.9
52.7
59.0
78.0
124
152
1810
2597
3148
4720
48.5
69.9
84.4
127
2518
3148
4013
67.5
84.4
108
2990
4564
80.1
122
4 to 10 psig /
0.28 to 0.69 bar
2 psig / 0.14 bar
Silver
10 psig /
0.69 bar
15
20
25
40
60
75
100
1.0
1.4
1.7
2.8
4.1
5.2
6.9
1023
1259
1574
2282
2990
4013
5115
27.4
33.7
42.2
61.2
80.1
108
137
1731
2125
2675
3934
5351
6531
8656
46.4
57.0
71.7
105
143
175
232
2518
3384
3777
5272
8656
10,230
67.5
90.7
101
141
232
274
3620
5115
6453
8656
97.0
137
173
232
4721
6295
7082
127
169
190
6295
7869
169
211
1. Spring ranges based on regulator installation with the spring case pointed down.
- Light shaded areas show where indicated droop would be exceeded regardless of capacity.
- Dark shaded areas show where maximum operating inlet pressure for a given orice size is exceeded.
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