Single Pressure Tapping Series for Insertion between RTJ Flanges MEF/2
Manufactured by 
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