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Rosemount™ 1495 Orifice Plate
The Rosemount 1495 Orifice Plate Primary Element is engineered for reliable measurement performance.
As the most common primary element used around the globe, this orifice plate offers a standard configuration with a square-edged concentric bore in both paddle and universal-type plates. This product is available in standard line sizes (2 - 24 in. or 50 - 600 mm) and is also suitable in high temperature and pressure applications.
Rosemount™ 1495 Orifice Plate


Max. Operating Pressure
ANSI B16.5 2500#
Process Temperature Range
-320 to 1200 °F (-196 to 649 °C)
Fluid Type
Liquid, gas, steam
Process Wetted Material
304/304L SST, 316/316L SST, DIN 1.4571 (316Ti SST), Alloy C-276, Alloy 400
Up to 5-year limited warranty


  • Can be ordered in line sizes ranging from 2 to 24 in. (50 to 60 mm) or custom line sizes for application flexibility
  • Manufactured to meet AGA, ASME, ISO, API and DIN standards
  • Offers standard configuration of square-edged concentric bore in both paddle and universal-type plates
  • Available in multiple material types to meet challenging process conditions
  • Withstands high temperature and pressure applications, providing long-lasting durability