Dimensions / weights
(approximate) in mm and kg
Size
A
B
C
D
E
Weight
A
DN25
DN32
DN40
DN50
35
105
323
80
2.85
105
2.95
2.86
2.91
B
(approximate) in inches and lbs
Size
A
B
C
D
E
Weight
DN25
DN32
DN40
DN50
1.38
4.13
12.72
3.15
6.28
4.13
6.50
6.30
6.41
C
Sizing the TFA flowmeter for saturated steam -
Horizontal orientation
Notes:
D
E
1 - Maximum steam flowrates are calculated at maximum differential pressure.
2 - For vertical capacities please contact Spirax Sarco.
3 - The tables below are a guide only.
Flow in kg/h
Maximum flowrates in kg/h at different pressures bar g.
Flowmetering
Target flowmeters
Size
Steampressurebarg
1
2
3
4
5
6
7
8
9
10
12
15
20
25
30
32
DN25
DN32
DN40
DN50
Maximum flow
Minimumflow
Maximum flow
Minimumflow
Maximum flow
Minimum flow
Maximumflow
Minimum flow
155
187
15
19
254
307
25
31
396
480
40
48
619
749
62
75
215
239
21
24
352
391
35
39
550
611
55
61
859
955
86
95
260
281
299
26
28
30
427
460
490
43
46
49
667
718
765
67
72
77
1042 1122 1196
104
112
120
73
87
102
573
619
659
57
62
66
941 1014 1080
95
101
108
1470 1583 1687
148
159
170
2297 2474 2637
229
247
265
316
333
32
33
519
546
52
55
809
853
81
85
1265 1333
126
133
116
131
697
734
71
73
1144 1204
115
121
1784 1881
179
187
2789 2939
278
293
349
378
418
35
38
42
572
621
686
57
62
69
894
969 1071
89
97
107
1396 1514 1673
140
151
167
145
174
218
769
833
922
77
84
93
1261 1369 1512
126
137
152
1971 2136 2361
196
214
236
3078 3338 3688
309
333
368
479
48
786
79
1227
123
1918
192
290
1 056
106
1733
174
2705
271
4228
423
534
584
53
58
876
957
88
96
1367 1494
137
149
2136 2335
214
233
363 435
1177 1 287
117
128
1931 2110
194
212
3014 3294
302
328
4709 5148
472
514
603
60
989
99
1 544
154
2412
241
464
1 329
132
2180
218
3404
340
5318
531
Flow in lb/h
Maximum flowrates in lb/h at different pressures psi g.
Size
Steam pressure psi g
14.5
29
44
58
342
412
474
527
33
42
46
53
560
677
776
862
55
68
77
86
873 1058 1213 1347
88
106
121
134
1365 1651 1894 2105
137
165
190
209
DN25
DN32
DN40
DN50
Maximum flow
Minimum flow
Maximumflow
Minimum flow
Maximumflow
Minimum flow
Maximumflow
Minimum flow
TI-P193-01 MI Issue 4
Page 3 of 4
TFA Flowmeter for Saturated Steam Service
3.3.8
