Data Sheet
Bulletin 71.2:299H
16
Table 6. Types 299H and 299HR Flow Capacities
(1)
for 1-1/2 NPT Internal Registration (continued)
OUTLET PRESSURE
RANGE, SETTING,
ACCURACY, SPRING PART
NUMBER AND COLOR
INLET PRESSURE
CAPACITIES IN SCFH / Nm
3
/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Orice Size, Inch / mm
1/4 x 3/8 /
6.4 x 9.5
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
14 to 35 psig /
0.97 to 2.4 bar
25 psig / 1.7 bar
±1% psia / bar
19B0432X012
Zinc
30
40
50
60
2.1
2.8
3.4
4.1
2070
3320
4140
4830
55.5
89.0
111
129
4230
7350
9340
11,030
113
197
250
296
7360
12,780
16,250
18,050
197
343
436
484
14,300
16,810
21,090
25,240
383
451
565
676
16,880
24,040
24,430
28,260
452
644
655
757
17,700
24,090
23,500
27,400
474
646
630
734
80
100
125
150
175
5.5
6.9
8.6
10.3
12.1
6110
7400
9020
10,630
10,200
164
198
242
285
273
14,050
17,020
20,730
24,440
25,200
377
456
556
655
675
22,050
25,650
30,000
34,360
7900
591
687
804
921
212
28,250
31,260
32,840
27,000
757
838
880
724
30,200
27,000
809
724
28,500 764
14 to 35 psig /
0.97 to 2.4 bar
30 psig / 2.1 bar
±1% psia / bar
19B0432X012
Zinc
40
50
60
80
2.8
3.4
4.1
5.5
2980
4020
4800
6110
79.9
108
129
164
6520
8950
10,850
14,050
175
240
291
377
11,330
15,560
18,020
23,130
304
417
483
620
15,750
21,220
27,150
31,370
422
569
728
841
18,100
25,240
30,390
30,500
485
676
814
817
19,080
22,500
28,000
32,300
511
603
750
866
100
125
150
175
6.9
8.6
10.3
12.1
7400
9020
10,630
10,600
198
242
285
284
17,020
20,730
24,440
24,500
456
556
655
657
27,630
33,030
38,430
31,500
740
885
1030
844
35,690
37,670
32,000
956
1010
858
32,500 871
14 to 35 psig /
0.97 to 2.4 bar
35 psig / 2.4 bar
±1% psia / bar
19B0432X012
Zinc
40
50
60
80
2.8
3.4
4.1
5.5
2350
3770
4700
6120
63.0
101
126
164
4790
8300
10,510
14,000
128
222
282
375
8330
14,430
18,270
24,350
223
387
490
653
13,640
21,350
29,060
34,490
366
572
779
924
19,570
26,060
32,530
34,500
524
698
872
925
20,850
22,000
29,000
33,600
559
590
777
900
100
125
150
175
6.9
8.6
10.3
12.1
7400
9020
10,630
10,900
198
242
285
292
17,020
20,730
24,440
24,800
456
556
655
665
29,600
36,050
42,500
37,000
793
966
1139
992
39,920
42,500
32,100
1070
1139
860
38,200 1024
30 to 60 psig /
2.1 to 4.1 bar
40 psig / 2.8 bar
±1% psia / bar
19B0432X022
Green
50
60
80
100
3.4
4.1
5.5
6.9
2400
3470
5600
6400
64.3
93.0
150
172
6000
8000
12,000
14,500
161
214
322
389
10,000
13,670
21,000
27,000
268
366
563
724
14,000
22,000
38,000
38,000
375
590
1018
1018
20,000
26,000
30,000
34,000
536
697
804
911
20,000
22,667
28,000
536
607
750
125
150
175
8.6
10.3
12.1
7600
9500
11,400
204
255
306
19,500
22,750
26,000
523
610
697
33,000
37,000
41,000
884
992
1099
38,000
42,000
1018
1126
30 to 60 psig /
2.1 to 4.1 bar
50 psig / 3.4 bar
±1% psia / bar
19B0432X022
Green
60
80
100
4.1
5.5
6.9
3000
5250
6750
80.4
141
181
6500
10,750
15,000
174
288
402
9500
17,750
26,000
255
476
697
16,250
28,750
41,250
436
771
1106
22,500
31,250
40,000
603
838
1072
25,000
32,500
670
871
125
150
175
8.6
10.3
12.1
8250
9500
10,750
221
255
288
17,500
21,750
26,000
469
583
697
32,500
37,750
43,000
871
1012
1152
43,750
46,250
1173
1240
30 to 60 psig /
2.1 to 4.1 bar
60 psig / 4.1 bar
±1% psia / bar
19B0432X022
Green
80
100
125
5.5
6.9
8.6
2750
2750
3250
73.7
73.7
87.1
7200
10,600
3000
193
284
80.4
13,000
15,500
22,000
348
415
590
18,750
25,000
46,250
503
670
1240
27,500
40,000
737
1072
32,500 871
150
175
10.3
12.1
3130
3000
83.9
80.4
2900
2800
77.7
75.0
18,000
14,000
482
375
11,250 302
1. Downstream piping may affect actual capacity. It may be necessary to use enlarged downstream piping to obtain published capacities.
- Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.