F I D I C O N

Orifice Flange Assemblies

Orifice Flange Assemblies are precision-engineered flow measurement devices used to determine the flow rate of liquids, gases, and steam in pipelines. The assembly consists of a pair of specially designed orifice flanges, an orifice plate, gaskets, studs, nuts, and pressure tapping points that facilitate accurate differential pressure measurement across the orifice plate.

Widely used in industries such as oil & gas, petrochemicals, power plants, chemical processing, water treatment, and pharmaceuticals, Orifice Flange Assemblies provide a reliable and cost-effective solution for flow measurement and process control. Designed in accordance with international standards, they ensure accurate performance, easy installation, and long-term durability under demanding operating conditions.

The pressure difference created by the restriction of flow through the orifice plate is measured and used to calculate the flow rate, making Orifice Flange Assemblies one of the most widely accepted methods for industrial flow measurement.

Available Options

  • Concentric, Eccentric, Segmental, and Quadrant Edge Orifice Plates
  • Vent and Drain Hole Configurations
  • Material Test Certificates (MTC)
  • NACE Compliance for Sour Service
  • Special Alloys for Corrosive Applications
  • Customized Pressure Tapping Arrangements
  • Complete Flow Measurement Packages

Specifications

Parameter Details
Product Name Full View Sight Glass
Size Range 15 NB to 300 NB (½" to 12")
Body Material SS 304, SS 316, SS 316L, Carbon Steel (Optional)
Glass Material Toughened Borosilicate Glass
End Connection Flanged, Threaded, TC End, Socket Weld, Butt Weld
Pressure Rating Up to 10 Bar (Higher on Request)
Temperature Range Up to 200°C (Depending on Gasket & Design)
Gasket Material PTFE, EPDM, Silicone, Viton
Viewing Type Full 360° Transparent View
Surface Finish Matt, Mirror Polish, Electro-Polished
Mounting Position Horizontal or Vertical
Design Standard As per Industrial Standards
Testing Hydrostatic & Leak Tested
Application Media Water, Chemicals, Solvents, Oils, Food Products, Pharmaceutical Liquids

Benefits

Orifice Flange Assemblies provide a proven and economical method for flow measurement in industrial processes. Their simple design, high accuracy, and compatibility with differential pressure transmitters make them ideal for monitoring and controlling fluid flow. With robust construction and adherence to international standards, these assemblies ensure reliable performance, operational efficiency, and long service life in critical process applications.