Paddle Type Orifice Plate An orifice plate is a device used for measuring flow rate, for reducing pressure or for restricting flow (in the latter two cases it is often called a restriction plate). Either a volumetric or mass flow rate may be determined, depending on the calculation associated with the orifice plate. It uses the same principle as a Venturi nozzle, namely Bernoulli's principle which states that there is a relationship between the pressure of the fluid and the velocity of the fluid. When the velocity increases, the pressure decreases and vice versa.
An Paddle Type Orifice Plate is a thin plate with a hole in it, which is usually placed in a pipe. When a fluid (whether liquid or gaseous) passes through the orifice, its pressure builds up slightly upstream of the orifice but as the fluid is forced to converge to pass through the hole, the velocity increases and the fluid pressure decreases. A little downstream of the orifice the flow reaches its point of maximum convergence, the vena contracta where the velocity reaches its maximum and the pressure reaches its minimum. Beyond that, the flow expands, the velocity falls and the pressure increases. By measuring the difference in fluid pressure across tappings upstream and downstream of the plate, the flow rate can be obtained from Bernoulli's equation using coefficients established from extensive research.
Paddle Type Orifice Plates are designed for the use with Orifice Flanges. Each of these orifice plates are designed and manufactured to meet I.S.A., A.P.I., A.G.A., A.N.S.I., and A.S.M.E. standards. Paddle Type Orifice Plate is sandwiched between two Orifice Flanges. Tag Plate of orifice plate projects out from Orifice flanges and it indicates the existence of Orifice plate. Details such as Tag NO / Orifice ID / Pipe ID / Plate Material are stamped on one side of the tag plate which faces upstream side of the pipe line. Outside diameter of the orifice plate equals to PCD-1 Bolt Dia. This ensures the concentricity with the main pipe line. The other method to maintain the concentricity is by using sleeves on the bolts or by providing dowel pins on the Orifice Flanges..
Line size (A)
Bore Size (B)
Savoy Piping Inc., are recognized as the prominent Manufacturer, Exporter and Supplier of a broad assortment of ASTM A240 Gr.304 Orifice Plate, ASTM A240 Gr.304L Orifice Plate, ASTM A240 Dual Gr.304/304L Orifice Plate, ASTM A240 Gr.316 Orifice Plate, ASTM A240 Gr.316L Orifice Plate, ASTM A240 Dual Gr.316/316L Orifice Plate, ASTM A240 Gr.310s Orifice Plate, ASTM A240 Gr.321 Orifice Plate, ASTM A240 Gr.347 Orifice Plate, ASTM A240 UNS S31803 Orifice Plate, ASTM A36 Orifice Plate,ASTM A516 Gr.70 Orifice Plate, etc.
The offered Paddle Type Orifice Plate is designed with utmost precision in conformity with the international quality standards.
|Paddle Type Orifice Plate Specification||ASTM A240 / ASME SA240, ASTM A516 Grade 70 / ASME SA516 Grade 70, ASTM A36 / ASME SA36, IS: 2062|
|Paddle Type Orifice Plate Manufacturing Process||CNC Cutting / Machining / Forging|
|Paddle Type Orifice Plate Other Grades||ASTM A240 Grade 304, ASTM A240 Grade 304L, ASTM A240 Grade 3304/304L, ASTM A240 Grade 310s, ASTM A240 Grade 316, ASTM A240 Grade 316L, ASTM A240 Grade 316/316L, ASTM A240 Grade 321, ASTM A240 Grade 347, ASTM A240 Grade 904L, ASTM A240 UNS S31803 Duplex, Inconel 600, 625, Monel 800, Incoloy 800, 825, ASTM A516 Grade 70, ASTM A36, IS2062 E250, IS2062 E350 etc.|
|Paddle Type Orifice Plate Outer Diameter||1/2" NB TO 24" NB|
|Paddle Type Orifice Plate Pressure Class||Class 150#, Class 300#, Class 400#, Class 600#, Class 900#, Class 1500#, Class 2500# or As Per Custom Requirement
PN 6, PN 10, PN 16, PN 25 and PN 40 etc
|Paddle Type Orifice Plate Facing Bore||Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), Concentric, Bevel|
|Paddle Type Orifice Plate Dimension||ASME B16.5, ASME B16.48, ISA RP 3.2 , DIN 1952 , BS 1042, ISO-5167, AGA 3, API 14.3, ASME B16.47 SERIES A, ASME B16.47 SERIES B, ASME B16.36, BS10, EN1092-1:2013, MSS SP44, ASA, API-605, ISO 7005, ISO 15590-3, DIN 2631-2638, DIN 2573-2576, DIN 2527, DIN 2641-2642, DIN 2565-2566, DIN2502, AWWA, ASTM, AS2129 TABLE C, D, E, F, J etc..|
|Paddle Type Orifice Plate Edges Types||Square Edge and Bevel Edge|
|Paddle Type Orifice Plate Types||Restriction Orifice Plate, Paddle Type Orifice Plate, Paddle Blank and Spacer, Ring Type Integral Orifice Plate, Concentric Bore Orifice Plate, Eccentric Bore Orifice Plate, Segmental Orifice Plate, Quadrant Orifice Plate etc.|
|Paddle Type Orifice Plate Other Testing||NACE MR0175, Ultrasoung TEST, IGC TEST, Intergranular Corrrosion Test as per ASTM A262 Practice E, Charpy Impact Test, Macro, Grain Size, Hardness, Magnetic Particle, PMI etc.|
|Paddle Type Orifice Plate Value Added Services||As per Custom Drawing, Supplied Bolts, Studs, Gasket and Flanges.|
|Paddle Type Orifice Plate Packaging||Carrate / Wooden Pallet / Wooden Box|
|Paddle Type Orifice Plate Shipment & Transportation||By Road - Truck / Train Partial Load, Full Load, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes|
|Paddle Type Orifice Plate Material Test Certificate||Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC|
The chemical composition of grade Paddle Type Orifice Plate is outlined in the following table
|Designation||Chemical composition % by mass max unless stated|
|UNS No||SAE No||AISI No / Common Name||C||Si||Mn||P||S||Cr||Mo||Ni||Others|
|S30310||-||XM-5 (303Plus x)||0.15||1.00||2.50/4.50||0.20||0.25 min||17.00/19.00||-||7.00/9.00||-|
|S30452||-||XM-21 (304HN)||0.08||1.00||2.00||0.045||0.030||18.0/20.0||-||8.00/10.00||N 0.16/0.30|
Ti 5x (C+N) / 0.70
Ti 5 x C min/0.70
|S34700||30347||347||0.08||0.75||2.00||0.045||0.030||17.0/19.0||-||9.0/13.0||Nb+Ta 10 x C min/1.0|
|Carbon, C||0.25 - 0.290 %|
|Copper, Cu||0.20 %|
|Iron, Fe||98.0 %|
|Manganese, Mn||1.03 %|
|Phosphorous, P||0.040 %|
|Silicon, Si||0.280 %|
|Sulfur, S||0.050 %|
|Composition||Percentage %||Composition||Percentage %|
|Specification & Description||Grade||Chemistry (%)|
|IS 2062-2006 Steel for Low, Medium & High Tensile structural||E-250 Gr-A||0.23 max||1.50 max||0.050 max||0.050 max||0.40 max||-||-||0.42 max|
|E-250 Gr-B||0.22 max||1.50 max||0.045 max||0.045 max||0.40 max||-||-||0.41 max|
|E-250 Gr-C||0.20 max||1.50 max||0.040 max||0.040 max||0.40 max||-||-||0.39 max|
|E-300||0.20 max||1.30 max||0.045 max||0.045 max||0.45 max||0.25 max||-||0.40 max|
|E-350||0.20 max||1.50 max||0.045 max||0.045 max||0.45 max||0.25 max||-||0.42 max|
|E-410||0.20 max||1.60 max||0.045 max||0.045 max||0.45 max||0.25 max||-||0.44 max|
|E-450 Gr-D||0.22 max||1.60 max||0.045 max||0.045 max||0.45 max||0.25 max||-||0.46 max|
|E-450 Gr-E||0.22 max||1.80 max||0.045 max||0.045 max||0.45 max||0.25 max||-||0.48 max|
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Savoy Piping Inc., is a well known worldwide Exporter of Paddle Type Orifice Plate, Savoy Piping Inc., is committed to provide each and every customer with the highest standard of customer service. We deals in Paddle Type Orifice Plate in India and Overseas, offering a wide range of Paddle Type Restriction Orifice Plate