Principle: Based on the ISO 5167-4 standard, the venturi tube offers durable flow measurement with minimal pressure loss.
Design and calculation standards
|
ISO 5167-4, ASME MFC-3M
|
Sizes
|
DN 200 - DN 1200
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Pressure rating
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PN 10 - 100, 150 - 600 lbs, ISO PN 20 - 100
|
β (d/D)
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0,3 < β < 0,75
|
Material
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Carbon steel, AISI 316, other on request
|
Mounting style
|
Weld ends according to DN 2559 or ANSI B16.25. Flanges acc. to DIN or ANSI B16.5 standards or clamp connection
|
Pressure taps
|
Weld ends Ø 21.3 mm, 26.9 mm, thread connection 3/8", 1/2" BSP, 1/2" NPT
|
Tappings
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Single pressure tappings or 2x4 tappings each arranged with an external annular ring to equalize the pressure
|
Outlet cone
|
7-15°
|
Accuracy
|
1,5 % (acc. to ISO 5167-4)
|
Pressure loss
|
Depending on outlet cone, between 10-15% of the differential pressure measured
|
Limits for Reynolds No
|
2*10^5 < ReD < 2*10^6 according to ASME
|
Accessories |
|
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shut-off valves
|
|
Condensing chamber unit for steam flow
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