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EMCO Orifice Plate With Single Pressure Tapping Series MEF/5 For Insertion Between Compact Flanges

EMCO manufactures orifice plates for flow measurement according to international standards. The orifice plates have square or conical openings, are made from corrosion resistant materials like stainless steel, and have pressure taps located at least 15 degrees apart to measure differential pressure. Key specifications include plate thickness between 3-6mm, pressure ratings from 300-2500psi, and accuracy of +/-0.5% for beta ratios below 0.6.

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Joan Candava
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74 views3 pages

EMCO Orifice Plate With Single Pressure Tapping Series MEF/5 For Insertion Between Compact Flanges

EMCO manufactures orifice plates for flow measurement according to international standards. The orifice plates have square or conical openings, are made from corrosion resistant materials like stainless steel, and have pressure taps located at least 15 degrees apart to measure differential pressure. Key specifications include plate thickness between 3-6mm, pressure ratings from 300-2500psi, and accuracy of +/-0.5% for beta ratios below 0.6.

Uploaded by

Joan Candava
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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EMCO Orifice Plate with Single Pressure Tapping

Series MEF/5 for Insertion between Compact Flanges


Principle

EMCO orifice plate are used as primary elements in flow measurement according to
the differential pressure principle. The tapping arrangement is corner tapping.

Construction

Design and calcu-


lation standards : ISO 5167-2 2003, ASME MFC-3M, NORSOK L-005,
Shell Flow Meter Engineering Handbook

Sizes : DN 50 - 600, 2" - 24"

β (d/D) : 0,1 < β < 0,75

Pressure rating : 300 - 2500 lbs

Orifice plate : Integrated with holder

Plate thickness : 3 – 6 mm

Vent or drain hole : On request

Material : AISI 316, 22 Cr Duplex, 25 Cr Duplex, 6Mo,


other materials on request.

Mounting style : Between flanges with IX grooves according to NORSOK L-005

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Orifice plate : Square edge concentric, square edge eccentric, conical,
1/4 circle, segment.
The plate is bevelled on the down stream side except
for 1/4 circle orifice plate.

Pressure taps : Threaded: ½" NPT int. (standard) or ½” BSP.


Flanged: ½” and ¾”, 300, 600, 1500 and 2500 lbs IX or RTJ.

Tap location : At least 15° apart,


depending on size and pressure rating.

Marking : The orifice plate is marked with "+" and "-" and flow direction.

Handle : With name plate in AISI 316 with the following inscription :
TAG no., serial no., pressure rating, inner pipe diameter,
bore, material.

Technical Data

Accuracy : +
/- 0,5 % 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
Reynolds No : Re(D) > 5000 for 0,1< β < 0,56 and Re(D) > 16000 x β 2 for
β > 0,56 according to ISO 5167-2 2003
2000 < Re < 108 according to ASME MFC-3M
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Dimensions

Pressure rating lbs


Size 300 600 900 1500 2500
Width (w) 40 40 40 40 40
2”
OD Ø132 Ø136 Ø136 Ø136 Ø147
Width (w) 40 40 40 40 40
3”
OD Ø161 Ø161 Ø161 Ø180 Ø209
Width (w) 40 40 40 40 40
4”
OD Ø186 Ø203 Ø203 Ø224 Ø248
Width (w) 50 50 50 50 50
6”
OD Ø240 Ø258 Ø263 Ø307 Ø322
Width (w) 50 50 50 50 50
8”
OD Ø306 Ø312 Ø330 Ø365 Ø408
Width (w) 50 50 50 50 50
10”
OD Ø361 Ø382 Ø397 Ø453 Ø485
Width (w) 60 60 60 60 60
12”
OD Ø415 Ø450 Ø462 Ø508 Ø564
Width (w) 60 60 60 60 60
14”
OD Ø450 Ø482 Ø497 Ø558 Ø618
Width (w) 60 60 60 60 60
16”
OD Ø519 Ø547 Ø567 Ø626 Ø718
Width (w) 70 70 70 70 70
18”
OD Ø567 Ø614 Ø633 Ø704 Ø780
Width (w) 70 70 70 70 70
20”
OD Ø631 Ø664 Ø700 Ø778 Ø849
Width (w) 70 70 70 70 70
24”
OD Ø750 Ø785 Ø830 Ø933 Ø1039

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