Description
EMCO orifice plate are used as primary elements in flow measurement of liquid, gas and steam according to the differential pressure principle
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Design and calculation standards
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ISO 5167-2, ASME MFC-3M, DIN 19205, Shell Flow Meter Engineering Handbook, L. K. Spink, AGA no. 3
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Sizes
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DN 50 - 600, 2" - 24"
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Pressure rating
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PN 10 - 40, 150 - 600 lbs
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Plate thickness
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3 - 8 mm
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Vent or drain hole
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On request
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Material
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AISI 316, other on request
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Mounting style
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Between flanges with flat or raised face according to DIN 2526, 2513, 2512, EN 1092-1 or RF according to B 16.5
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Pressure taps
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3/8", 1/2" BSP male, Ø 12 mm, 1/2" NPT
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Tap Length
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150 mm, others on request.
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Tap Location
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At least 45 degrees apart to be stated with order
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Connection
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Flanges with flat or raised face according to DIN 2526, 2513 or 2512, or RF according to ANSI B 16.5
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Orifice plate shapes
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Square edge concentric as standard. See above illustrations for other shapes.
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Marking
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The orifice plate is marked with "+" and"-" and flow direction.
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Accuracy
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+/- 0,6 % for β < 0,6 and equal to β for β values above 0,6
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Pressure loss
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Depending on β, for β equal to 0,6 : ca. 60 % of the differential pressure measured
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Limits for Reynolds No
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Re > 1260 x β2 D according to ISO 5167 2000 < Re < 108 according to ASME MFC-3M
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Shut-off valves and condensing chambers for steam flow measurement. Flange assembly complete with bolts, nuts and gaskets
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