Orifice Plate with Orifice Carrier Rings and Corner Pressure Tappings Series for Insertion Between Flanges MRK

orifice plate with carrier ring and annular chambers

Manufactured by  emco controls

The EMCO orifice plates with carrier rings are used as primary elements in flow measurement of liquid, gas and steam according to the differential pressure principle.
Can be supplied with mating flanges, bolts, nuts and gaskets.
Condensing pots are included for steam flow measurement.

Design and calculation standards :

  • ISO 5167, ASME MFC-3M, DIN 19205, Shell Flow Meter Engineering Handbook, L. K. Spink, AGA no. 3.
  • Sizes : DN 50 - 1200, 2" - 42".
  • Pressure rating : PN 10 - 400, 150 - 2500 lbs
  • Plate thickness : 3 - 10 mm depending on plate size.
  • Vent or drain hole : On request.
  • Plate material : AISI 316, other on request.
  • Carrier ring material : Carbon steel P265GH, AISI 316, 16Mo3,
  • 13CrMo4-5, other materials on request.<
  • Mounting style : Between flanges with flat or raised face or groove according to DIN 2526, 2513 or 2512, RF according to B 16.5
  • Orifice plate shapes: Square edge concentric, square edge eccentric, conical, 1/4 circle, segment. Orifice plates in sizes up to DN 150 the plate is bevelled on the down stream side except for 1/4 circle orifice plate.
  • Pressure taps : 3/8", 1/2" BSP male, Ø 12 mm, 1/2" NPT.
  • Tap lengths : 150 mm, other on request.
  • Tap location : Normally same side of carrier rings, except for vertical mounting where an angle of minimum 90° is required otherwise to be stated with order.
  • Marking : In case of bevelled orifice plate the carrier rings are marked with "+" and "-" and flow direction.
  • Technical Data
  • Accuracy : /- 0,6 % for β < 0,6 and equal to β for β values above 0,6
  • Pressure loss : Depending on β, for β equal to 0,6 : ca. 60 % of the differential pressure measured
  • Limits for : Re > 1260 x β2 D according to ISO 5167
  • Reynolds No 2000 < Re < 108 according to ASME MFC-3M
  • EMCO Orifice Plate Series MRK
  • Accessories : Shut-off valves and condensing chambers for steam flow measurement.
  • Flange assembly complete with bolts, nuts and gaskets.

orifice plate shapes

Sizes

Dimensions for DIN flanges

SizePipePN 10 PN 16 PN 25 PN 40 PN 64 PN 100 d1=
DN OD D  d4 D d4 D d4 D d4 D d4 D d4 D+
50 60.3 54.5 107 54.5 107 54.5 107 54.5 107 54.5 113 53.9 119 1
65 76.1 70.3 127 70.3 127 70.3 127 70.3 127 69.7 138 68.9 144 1
80 88.9 82.5 142 82.5 142 82.5 142 82.5 142 81.7 148 80.9 154 1
100 114.3 107.1 162 107.1 162 107.1 168 107.1 168 106.3 174 104.3 180 1
125 133 125 192 125 192 125 194 125 194 124 210 120.4 217 2
125 139.7 131.7 192 131.7 192 131.7 194 131.7 194 130.7 210 127.1 217 2
150 159 150 218 150 218 150 224 150 224 147.8 247 144.8 257 2
150 168.3 159.3 218 159.3 218 159.3 224 159.3 224 157.1 247 154.1 257 2
175 193.7     182.9 248 182.5 254 182.5 265 181.1 277 176.1 287 2
200 219.1 207.3 273 207.3 273 206.5 284 206.5 290 204.9 309 199.1 324 2
250 273 260.4 328 260.4 329 258.8 340 258.8 352 255.4 364 248 391 2
300 323.9 309.7 378 309.7 384 307.9 400 307.9 417 301.9 424 295.5 458 2
350 355.6 341.4 438 339.6 444 339.6 457 338 474 330.6 486 323.6 512 2
350 368 353.8 438 353.8 444 352 457 350.4 474 343 486 336 512 2
400 406.4 392.2 489 390.4 495 388.8 514 384.4 546 378 543     2
400 419 404.8 489 403 495 401.4 514 397 546 390.6 543     2
500 508 493.8 594 492.9 617 488 624 479.6 628         4
600 610 595.8 695 592.4 734 588 731             4
700 711 695 810 693.4 804 686 833             4
800 813 797 917 793 911 784.6 942             4
900 914 896 1017 894 1011 882 1042             4

Overall Dimensions

All dimensions in mm
D : Inner pipe diameter
d4 : Outer diameter of carrier rings when mounted between flanges with facing according to DIN 2526.
d1 : Inner diameter of carrier rings. When mounted between flanges with facing according to DIN 2512 and 2513, the inner diameter is D + 1.2 mm.

MRK orientation

MRK GA

Works with:-

Differential pressure transmitters:-IDP10; IDP15; IDP25; IDP31; IDP50
And all our Absolute Pressure and Gauge Pressure transmitters, Temperature sensors and mass flow computers.
MultiVariable Transmitters :- IMV25, IMV30

Download Manual (Not Available)

If you require further information on this product or would like a quotation, please contact dp-flow on:

email: 
sales +44 1923 462500

Supplied by DP-Flow