Orifice Plate manufactured by us is quality controlled from the selection of new material to the packaging of the finished product.
- EDGES: Sharp & square, will not reflect a beam of light when viewed without
magnification. - BORE: Orifice bore tolerance strictly in accordance with A.G.A, Asme, ISO5167, ISA
and BS standards. - FLANGE MATERIAL: CARBON STEEL A105/ASTMA182/SS304/SS316/SS16L/ALLOY
STEEL OTHER MATERIAL ON REQUEST. - ORIFICE PLATE: SS304/SS306/SS316L/PVC ETC OTHER MATERIAL ON REQUEST
- STUDS &NUTS: ASTM A193 GR.B7/A194GR.2H/SS OTHER MATERIAL ON REQUEST
- GASKETS: CAF/PTFE/SPIRAL WOUND/NEOPRENE/NON-ASSBESTOS OTHER MATERIAL ON REQUEST
The bore and bevel is the standard method of limiting the plate edge thickness. The bevel is
machined at a 45° angle to the desired edge thickness. Unless otherwise specified, plates will be
bevelled to 1/50 of the line I.D. or 1/8 of the orifice bore, minimum governing.
The Bore and Counter bore is a special method in limiting the plate edge thickness. Instead of
beveling at the normal 45°, the plate is counter bored to the desired edge thickness.
Segmentally bored orifice plates are provided for measurements where solids are entrained in
a gas or liquid flow stream. The circular portion of the bore is inscribed within a circle which is
normally 98% of the pipe diameter. The segmental opening may be placed either at the top or
bottom of the pipe. Industries using these bores include sewage treatment, steel, chemical,
water conditioning, paper and petrochemical
Eccentrically bored plates are plates with the orifice off-center, or eccentric, as opposed to
concentric. The bore of the eccentric orifice is normally inscribed in a circle which is 98% of the
pipe diameter, so that solids or slurries may pass through. Eccentric orifice plates are used in
many industries including heavy and light chemicals, steel, paper, atomic and petrochemicals.
The Quarter-Round, or Quadrant bore, is an orifice with the inlet edge rounded. The radius of
the quarter-circle bore is a function of the orifice-to-pipe ratio (d/D). Thickness at the throat is
equal to the radius. This bore is specifically designed for fluids of high viscosity, such as heavy
crude’s, syrups and slurries. Quarter-Round bores are recommended for viscous flows having
Reynolds Numbers below 100,000.
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ORIFICE PLATES & FLANGE ASSEMBLIES
Flowtel offers a complete range of Orifice plates for a variety of flow conditions fro mounting between flanges for Carrier Rings
and with RJ plate holders for mounting between RJ Flanges.
Flowtel’s Orifice Flange Assemblies are made to AGA/ASME recomendations and are reliable means to flow measurement.
Assemblies to other international standards Viz. ISO,BS,DIN etc. are also available.
Flowtel’s Orifice Flanges cover complete range of sizes pressure rating upto ASA 2500 of ANSI B16.36 as standard and
dimensions as per other major international standard viz.- APL, MSS, BS and DIN etc. are also available on request. These
flanges are available in various types such as Weld neck, slip on, Scewed with facing FF RJ, TG etc avrious types of tapping
available are viz. Flange, Corner and D-D/2. Orifice Bore calculation can be carried out as per ASME MFC-3M, ASME 19.5 ISO
5167/BS1042, R.W. MILLER and L.K. Spink etc.
| FLANGES | : Carbon Steel/ ASTM A105/ ASTM A 182 / ASTM A 350/ Ss304/ SS04L/ SS 316/ SS 316 L/ PP/ PTFE |
| ORIFICE PLATE | : Ss304 / SS304L / Ss316 / SS 316 L / Monel / HAST ALLOY / PP / PTFE Other material on request. |
| STUDS & NUTS | : MS/SS/ASTM A193 Gr. B7 /A194 Gr. 2h |
| GASKETS | : SPIRAL WOUND/CAF/PTFF/AF120 |
Fasteners & Gaskets of other material specification available on request.
ORIFICE FLANGE ASSEMBLIES WITH DP TRANSMITTER
| FLANGES | : Carbon Steel/ ASTM A105/ ASTM A 182 / ASTM A 350/ SS304/ SS04L/ SS 316/ SS 316 L/ PP/ PTFE |
| ORIFICE PLATE | : SS304 / SS304L / SS316 / SS 316 L / MONEL / HAST ALLOY / PP / PTFE Other material on request. |
| STUDS & NUTS | : MS/SS/ASTM A193 Gr. B7 /A194 Gr. 2h |
| GASKETS | : SPIRAL WOUND/CAF/PTFF/AF120 |
Fasteners & Gaskets of other material specification available on request.
- Repeatability of reading up to 0.1 %.
- High flow rate turndown ratio.
- Suitable for liquid, Gas & Steam flow application.
- Choice of linear or square root out put.
- A/D or D/A converter not required as the electronic unit
can be directly hooked up with the control system - Piezo resistive sensor for temperature & pressure
compensation. - Programmable engineering units for display