Simplex Single-Chamber Orifice Fittings

Save on Down-time and Operational Costs

Engineered for use on smaller line sizes, Daniel® Simplex™ Single-Chamber Orifice Fittings offer superior gas and liquids differential pressure measurement performance in accordance with AGA 3, API 14.3 and OIML 5167. Unit-built construction with the plate carrier permanently attached to the sealing bar allows the sealing bar, carrier and plate to be removed as a unit, enabling operators to quickly perform plate inspections and changeouts with no need to remove the fitting from the line. There is also no need to spread the flanges to change the plate, further minimizing downtime and costs as well as eliminating the possibility of costly gas leakage or spillage of liquids.

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Measurement Type Differential pressure
Fluid Type Liquid, gas
In accordance with AGA 3/API 14.3
Line Size 2-in to 4-in (50-mm to 100-mm)
Max. Operating Pressure ANSI 2500
Process Temperature Range -20º F to +160º F (-29º C to +71º C )
Flange Type ANSI Raised Face, ANSI RTJ
Process Wetted Material Carbon Steel (WCB and LCC), 316/316L SST, Duplex
Trim Options Standard Service, Sweet Service, Sour Service, Low Temperature
  • Expedite plate inspections and change-outs with ability to remove the sealing bar, carrier and plate as a unit
  • Prevent liquid spillage or gas leakage with no flange spreading required for plate inspections and change-outs
  • Maximize uptime by performing plate changes and maintenance without removing the fitting from the line
  • Virtually eliminate maintenance time and cost with simple fitting design that has few parts
  • Achieve concentricity in accordance with the latest AGA3/API 14.3 standards for consistently accurate measurement
  • Enhance measurement at high-pressure wells and more with 3-in to 4-in fittings configurable up to 10,000 psig
  • Improve safety with manufacturing in accordance with ASTM and ANSI flange connection specifications
  • Ensure performance in accordance with ASME with optional hydrostatic testing to 1.5 times operating pressure
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)