Flowmetering Orifice plate flowmeters
3
Dimensions/weights (approximate) in mm and kg Size EN 1092 PN16 A EN 1092 PN25 A EN 1092 PN40 A BS 10: Table H A ASME 150 A
ASME 300 A
ASME 600 A
JIS 20 A
KS 20 A
Maximum weight kg
DN25
73
73
73
71.4
66.7
73.0
73.0
74
74
2.36
DN40 DN50 DN65 DN80 DN100
94
94
94
88.9
85.7
95.3
95.3
89
89
3.72
109
109
109
111.1
104.7
111.1
111.1
104
104
4.91
129
129
129
130.1
123.8
130.2
130.2
124
124
6.21
144
144
144
149.2
136.5
149.3
149.3
140
140
7.91
164
170
170
174.6
174.6
181.0
193.7
165
165
13.75
DN125
194
196
196
215.9
196.9
216.0
241.3
203
203
20.98
DN150
220
226
226
241.3
222.3
250.9
266.7
238
238
23.51
DN200 DN250 DN300 DN350 DN400 DN450 DN500 DN600
275
286
293
304.9
279.4
308.0
320.6
383
383
31.25
331
343
355
358.8
339.7
361.9
400.0
356
356
47.95
386
403
420
415.9
409.6
422.2
457.1
406
400
58.74
3.4 3
446
460
477
469.9
450.8
485.7
492.1
450
450
60.20
498
517
549
527.0
574.3
539.7
565.1
570
570
85.99
559
567
574
581.0
549.2
596.8
612.7
575
575
94.38
620
627
631
644.5
606.4
654.0
682.6
630
630
117.69
737
734
750
749.3
717.5
774.7
790.6
734
734
146.37
Notes: 1. Dimension C is 2.54 mm for all sizes in line with BS 1042 / ISO 5167. 2. For line sizes DN25 to DN350, orifice plate thickness T is 3 mm, above DN350, T is 6 mm. 3. Gaskets are 1.6 mm thick. 4. For line sizes up to DN350, carrier assembly thickness B is 82 mm, above DN 350, B is 85 mm. 5. An optional drain hole that meets BS 1042 can be incorporated if required. 6. Maximum weights shown above are based on ASME 600 flanges.
T , Note 2
C , Note 1
How to order Example: 1 off Spirax Sarco M410 orifice plate and carrier assembly. Important note: In order that a correctly sized orifice plate can be supplied, it is essential that full details of the installation and estimated flowrates are supplied to Spirax Sarco. This is best done using a customer orifice plate datasheet available from Spirax Sarco.
A
Note 5
Note 3
B (Note 4)
For imperial dimensions/weights, see next page
TI-P176-02 EMM Issue 6
Page 3 of 4
M410 Orifice Plate Flowmeter and Carrier Assembly
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