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

orifice plate with carrier ring and annular chambers

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=
DNODD d4Dd4Dd4Dd4Dd4Dd4D+
5060.354.510754.510754.510754.510754.511353.91191
6576.170.312770.312770.312770.312769.713868.91441
8088.982.514282.514282.514282.514281.714880.91541
100114.3107.1162107.1162107.1168107.1168106.3174104.31801
125133125192125192125194125194124210120.42172
125139.7131.7192131.7192131.7194131.7194130.7210127.12172
150159150218150218150224150224147.8247144.82572
150168.3159.3218159.3218159.3224159.3224157.1247154.12572
175193.7  182.9248182.5254182.5265181.1277176.12872
200219.1207.3273207.3273206.5284206.5290204.9309199.13242
250273260.4328260.4329258.8340258.8352255.43642483912
300323.9309.7378309.7384307.9400307.9417301.9424295.54582
350355.6341.4438339.6444339.6457338474330.6486323.65122
350368353.8438353.8444352457350.44743434863365122
400406.4392.2489390.4495388.8514384.4546378543  2
400419404.8489403495401.4514397546390.6543  2
500508493.8594492.9617488624479.6628    4
600610595.8695592.4734588731      4
700711695810693.4804686833      4
800813797917793911784.6942      4
900914896101789410118821042      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(0)1865 600245