Orifice Plates and Plate Sealing Units

Quality Beyond Compare

EExceptional performance and superior durability are the hallmarks of Daniel Orifice Plates and Plate Seals. Available in a variety of line sizes and materials, these simple yet effective differential pressure measurement solutions are compatible with all Daniel ̀fittings (Senior, Junior, Simplex and Orifice Flange Unions) and continue to be one of the most widely used oil and gas ́flow measurement technologies. Every Daniel plate is expertly manufactured to meet or exceed AGA 3/API 14.3 standards and a variety of plate materials and seal options, including nitrile (NBR) and PTFE, are available to ensure optimum performance in extreme conditions as well as to eliminate the possibility of gas leakage or spillage of liquids.

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Line Size .25-in to 36-in (75 mm to 10970 mm)
Uncertainty of Discharge Coefficient ±0.5% of flow rate
Flow Turndown 10:1 or better
Max. Operating Pressure ANSI 2500
Process Temperature Range -20°F to +160°F (-29°C to +71°C)
Fluid Type Liquid, gas
Process Wetted Material 316/316L Stainless Steel
  • Daniel takes great strides in producing quality products and takes no exception when providing exceptional performance and durability of Orifice Plates and Plate Seals. These simple and effective differential pressure measurement solutions have been serving the oil and gas industry for more than 85 years and have remained one of the most widely used technologies.
  • Every Daniel Orifice Plate and Seal is manufactured to ensure compliance with industry standards and meet specific application requirements for custody transfer of oil and gas as well as allocation measurement. Daniel offers a variety of plate models with different orifice plate bore options and can supply the customer with various seal options dependent on the application type. Below are a few benefits customers can appreciate when using Daniel Orifice Plates and Orifice Seals.
    • Improve performance and durability by selecting from various integral plate seals
    • Enhance measurement of clean, dry gas or low viscosity fluids with a 45  bevel on the bore hole periphery
    • Counter, Segmental, Eccentric, and Quarter Round bores are available to improve performance on dirty applications or other challenging fluids
    • Quality control ensures plate bore size and bevel complies with AGA 3, API 14.3 or ISO 5167
    • Simplify troubleshooting and minimize long-term maintenance by using the simplest measurement device that does not require calibration
    • Ensure and verify measurement accuracy to meet customer design standards

Note: Please refer to the Plate Datasheet for Plate Models and Seal Model selections

Line Size DN50 to DN200 (2-in to 8-in)
Fluid Type Liquid
Operating Temperature Range -29º C to +66º C (-20º F to +150º F)
Operating Pressure Range ANSI 150 to 300
Materials: Valve Body Carbon Steel, ASTM A352 GR LCC
Materials: Valve Cylinder DN50 to DN 200 (2-in to 4-in): Stainless Steel, ANSI 150 to 600; DN250 to DN 300 (6-in to 8-in) Carbon Steel, Nickel Coated, ANSI 150 to 600
Materials: Valve Piston Standard: Stainless Steel
Materials: Seat Ring DN50 to DN200 (2-in to 6-in) Stainless Steel; DN300 (8-in) Carbon Steel, Nickel Coated
Materials: O-Rings Standard: Viton; Optional: Neoprene, EPR, Kalrez / Teflon AP (Aggressive Products)