Transcription of Product Data Sheet FM-OP/ROPA Restriction …
1 Product Data SheetFM-OP/ROPAR estriction orifice PlatesFlow MeasurementnnnnnManufactured generally to BS EN ISO 5167 Wide range of materialsProven technologySuitable for most pipe sizesOrifice sizing on requestGeneral DescriptionRestriction orifice plates can be used as asimple pressure reducing device, or to limit theflow rate in a pipeline. They are designed to slipbetween pipe flanges. Versions to suit RTJ typeflanges are material grades include 316 StainlessSteel, 304 Stainless Steel, 310 Stainless Steel,HastelloyC276, HastelloyB3, DuplexStainless Steel, Super Duplex Stainless Steel,Monel 400, Carbon Steel, Titanium, Incoloy800, Incoloy 825, Inconel 600, Inconel 625,Tantalum, PTFE and contact the sales office for other grades.
2 DimensionsThe outside diameter of the orifice plate is equalto the bolt circle diameter of the connectingflanges minus the diameter of the bolt. Thisensures that the plate is centred accurately inthe thicknesses depend on line size anddifferential pressure, and should be sufficient toprevent the plate from bending under operatingconditions. Recommended plate thicknessesare shown on the graph on page Instruments Ltd standard platedimensions are shown in Figure can be made in accordance withcustomer drawings as Bore SizingOrifice calculations are performed generally inaccordance with the formulae detailed in RWMiller s Flow Measurement Handbook , to Technical Data Sheet TD-FM/QU1A fordata required for Thermocouple Instruments Ltd restrictionorifice sizing program, ROCalc, is also availablefor purchase.
3 Refer to Product Data SheetFM- orifice PlatePlate OD (A)Tab HandleLength (D)Tab HandleWidth (E)PlateThicknessRTJ Type Restriction PlatesRestriction orifice plates to mount between RTJtype flanges are also available, in one or twopiece designs, and in a wide range of further details, please refer to Product DataSheet FM- orifice PlatesProduct Data Sheet FM-OP/ROPAT hermocouple Instruments LimitedPentwyn, Cardiff, CF23 7XJ, UKTel: (+44) 029 20734121 Fax: (+44) 029 20734040 Internet: : Rights Reserved. Copyright 2000 Thermocouple Instruments LB300 LB400 LB600 LB900 LB1500 LB2500 LBIN ADEADEADEADEADE A DE A DE1/2" " " 1/4" 1/2" " 1/2" " " " " " " " " " " " LINESIZEF igure 1 - Standard orifice plate Dimensions for ANSI RF FlangesRecommended plate Thickness0510152025303540455055606570758 0859095100105110115120125130135140145150 0255075100125150175200225250275300325350 375400425450475500 Pipe Inside Diameter (mm)Permanent Pressure Loss (bar)
4 3mm6mm10 mm15 mm20 mm30 mm40 mmBased on 316/LStainless SteelIncoloy InconelMonelHastelloy,andare trademarks of INCO Alloys International a trademark of Haynes International Inc.
