Single Pressure Tapping Series for Insertion between RTJ Flanges MEF/2
EMCO single pressure tapping orifice plates are used as primary elements in flow measurement according to the differential pressure principle. The tapping arrangement is corner tapping.
Design and calculation standards :
- ISO 5167-2 2003, ASME MFC-3M, ANSI B 16.5, 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 RTJ according to ANSI B 16.5 or to API.
- 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: 1⁄2" NPT int. (standard) or 1⁄2" BSP. Flanged: 1⁄2" and 3⁄4", 300, 600, 1500 and 2500 lbs 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
Sizes
ASME Flanges
| ASME Flanges | ||||||
|---|---|---|---|---|---|---|
| Size | 300 | 600 | 900 | 1500 | 2500 | |
| 2" | Ring No. | R23 | R23 | R24 | R26 | |
| Width (w) | 44 | 44 | 44 | 44 | ||
| OD | Ø108 | Ø108 | Ø124 | Ø133 | ||
| 3" | Ring No. | R31 | R31 | R31 | R35 | R32 |
| Width (w) | 44 | 44 | 44 | 44 | 48 | |
| OD | Ø146 | Ø146 | Ø156 | Ø168 | Ø168 | |
| 4" | Ring No. | R37 | R37 | R37 | R39 | R38 |
| Width (w) | 44 | 44 | 44 | 44 | 52 | |
| OD | Ø175 | Ø175 | Ø181 | Ø194 | Ø203 | |
| 6" | Ring No. | R45 | R45 | R45 | R46 | R47 |
| Width (w) | 44 | 44 | 44 | 48 | 54 | |
| OD | Ø241 | Ø241 | Ø241 | Ø279 | ||
| 8" | Ring No. | R49 | R49 | R49 | R50 | R51 |
| Width (w) | 44 | 44 | 44 | 52 | 57 | |
| OD | Ø302 | Ø302 | Ø308 | Ø318 | Ø340 | |
| 10” | Ring No. | R53 | R53 | R53 | R54 | R55 |
| Width (w) | 44 | 44 | 44 | 52 | 63 | |
| OD | Ø356 | Ø356 | Ø362 | Ø371 | Ø425 | |
| 12” | Ring No. | R57 | R57 | R57 | R58 | R60 |
| Width (w) | 44 | 44 | 44 | 57 | 63 | |
| OD | Ø413 | Ø413 | Ø419 | Ø438 | Ø495 | |
| 14” | Ring No. | R61 | R61 | R62 | R63 | |
| Width (w) | 44 | 44 | 52 | 60 | ||
| OD | Ø457 | Ø457 | Ø467 | Ø489 | ||
| 16" | Ring No. | R65 | R65 | R66 | R67 | |
| Width (w) | 44 | 44 | 52 | 63 | ||
| OD | Ø508 | Ø508 | Ø524 | Ø546 | ||
| 18" | Ring No. | R69 | R69 | R70 | R71 | |
| Width (w) | 44 | 44 | 54 | 63 | ||
| OD | Ø575 | Ø575 | Ø594 | Ø613 | ||
| 20" | Ring No. | R73 | R73 | R74 | R75 | |
| Width (w) | 48 | 48 | 54 | 63 | ||
| OD | Ø635 | Ø635 | Ø648 | Ø673 | ||
| 24" | Ring No. | R77 | R77 | R78 | R79 | |
| Width (w) | 52 | 52 | 60 | 70 | ||
| OD | Ø749 | Ø749 | Ø772 | Ø794 |
API Flanges
| Size | Pressure Rating PSI | 3000 | 5000 |
|---|---|---|---|
| 2 1/16" | Ring No. | R or RX 24 | R or RX 24 |
| Width (w) | 55 | 55 | |
| OD | Ø124 | Ø124 | |
| 2 9/16" | Ring No. | R or RX 27 | R or RX 27 |
| Width (w) | 60 | 60 | |
| OD | Ø137 | Ø137 | |
| 3 1/8" | Ring No. | R or RX 31 | R or RX 35 |
| Width (w) | 55 | 65 | |
| OD | Ø156 | Ø168 | |
| 4 1/16" | Ring No. | R or RX 37 | R or RX 39 |
| Width (w) | 65 | 80 | |
| OD | Ø181 | Ø194 | |
| 7 1/16" | Ring No. | R or RX 45 | R or RX 46 |
| Width (w) | 75 | 95 | |
| OD | Ø242 | Ø181 | |
| 9" | Ring No. | R or RX 49 | R or RX 50 |
| Width (w) | 90 | 110 | |
| OD | Ø308 | Ø318 | |
| 11” | Ring No. | R or RX 53 | R or RX 54 |
| Width (w) | 110 | 130 | |
| OD | Ø362 | Ø372 | |
| 13 5/8" | Ring No. | R or RX 57 | |
| Width (w) | 120 | ||
| OD | Ø419 | ||
| 16 3/4" | Ring No. | R or RX 66 | |
| Width (w) | 130 | ||
| OD | Ø524 | ||
| 21 3/4" | Ring No. | R or RX 74 | |
| Width (w) | 150 | ||
| OD | Ø648 |
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@dp-flow.co.uk
sales +44(0)1608 544222
Supplied by DP-Flow