Data Sheet

Bulletin 71.2:627F
9
Table 8. Flow Capacities in SCFH / Nm
3
/hof0.6SpecicGravityNaturalGasat1%DroopinAbsoluteOutletPressureforNPS2/DN50
(Downstream Control Line in Body Size Piping) (continued)
Figure 3.TypicalPerformanceCurvefor3/4NPTType627FRegulator
2
3/8-INCH / 9.5 mm ORIFICE. ACTUATOR SPRING 35 to 100 psig /
2.4 to 6.9 bar RANGE (RED COLOR CODE) PILOT SPRING 200 psig / 13.8 bar
INLET PRESSURE
FLOW RATE THOUSANDS OF SCFH / Nm
3
/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
OUTLET PRESSURE, psig
52
49
50
51
0
0 / 0
5 / 0.1
25 / 0.7
35 / 0.9
30 / 0.8
20 / 0.5
15 / 0.4
10 / 0.3
OUTLET PRESSURE, bar
3.5
± 1%
0.00
3.4
2
PILOT SPRING RANGE,
PART NUMBER, AND
COLOR CODE
OUTLET
PRESSURE
SETTING
INLET
PRESSURE
NPS 2 / DN 50 BODY SIZE
Orice Diameter, Inches / mm
psig bar psig bar 3/8 x 1/8 / 9.5 x 3.2 3/8 x 1/4 / 9.5 x 6.4 3/8 / 9.5 1/2 / 13
5 to 35 psig /
0.34 to 2.4 bar
1B788327022
Silver
30 2.1
50
60
80
100
125
150
200
250
3.5
4.1
5.5
6.9
8.6
10.3
13.8
17.2
930
1140
1490
1800
2200
2580
3370
4170
24.9
30.6
39.9
48.2
59.0
69.1
90.3
112
3680
4530
6060
7340
8940
10,500
13,700
16,900
98.6
121
162
197
240
281
367
453
7670
9540
13,500
16,300
19,800
23,400
30,500
37,600
206
256
362
437
531
627
817
1008
12,100
15,300
23,800
28,900
35,100
324
410
638
775
941
35 to 100 psig /
2.4 to 6.9 bar
1K748527202
Red
40 2.8
60
80
100
125
150
200
250
4.1
5.5
6.9
8.6
10.3
13.8
17.2
1030
1450
1790
2200
2580
3370
4170
27.6
38.9
48.0
59.0
69.1
90.3
12
4070
5790
7340
8940
10,400
13,500
16,900
109
155
197
240
279
362
453
8440
12,300
16,300
19,800
23,400
30,500
37,600
226
330
437
531
627
817
1008
12,000
19,700
28,900
35,100
322
528
775
941
50 3.4
70
80
100
125
150
200
250
4.8
5.5
6.9
8.6
10.3
13.8
17.2
1130
1370
1770
2200
2590
3370
4170
30.3
36.7
47.4
59.0
69.4
90.3
112
4450
5420
7060
8940
10,400
13,500
16,900
119
145
189
240
279
362
453
8460
11,300
15,000
19,800
23,400
30,500
37,600
227
303
402
531
627
817
1008
14,000
17,900
24,200
35,100
375
480
649
941
60 4.1
80
100
125
150
200
250
5.5
6.9
8.6
10.3
13.8
17.2
1220
1700
2170
2580
3370
4170
32.7
45.6
58.2
69.1
90.3
112
4790
6730
8700
10,300
13,500
16,900
128
180
233
276
362
453
9860
14,100
18,500
23,400
30,500
37,600
264
378
496
627
817
1008
14,000
22,400
30,000
375
600
804
75 5.2
100
125
150
200
250
6.9
8.6
10.3
13.8
17.2
1490
2080
2550
3370
4170
39.9
55.7
68.3
90.3
112
5870
8250
10,200
13,500
16,900
157
221
273
362
453
12,100
17,300
21,700
30,500
37,600
324
464
582
817
1008
18,800
27,600
504
740
100 6.9
125
150
200
250
8.6
10.3
13.8
17.2
1660
2360
3330
4170
44.5
63.3
89.2
112
6680
9320
13,400
16,900
179
250
359
453
13,700
19,400
28,500
37,600
367
520
764
1008
21,200 568
–Maximumoperatinginletpressureisexceeded.