An orifice plate is a device used for measuring flow rate, for reducing pressure or for restricting flow (in the latter two cases it is often called a restriction plate). Either a volumetric or mass flow rate may be determined, depending on the calculation associated with the orifice plate.
Every feature of Lambda Square Orifice Plates can be customized!
Engineering, design and application support.
Fabricated to your requirements.
Differential flow metering for over 35 years.
Thousands of worldwide installations.
Illustrations are representative of only a few of the possible configurations...
Square Edge Concentric Bore & Bevel
Concentric orifice with a square edge. Edge thickness is limited with a downstream beveled bore. Most common and economical type of orifice plate.
Eccentrically Bored Orifice
Popular in water treatment, oil, and paper industries – anywhere flow contains solids and for slurries. Bore edge is typically inscribed in a circle 98% of line ID.
Quadrant Bore Orifice
Measure high-viscosity flows – heavy crude, syrups, slurries. Recommended when the Reynolds Number factor is less than 10,000.
Radius Bore
For flows with entrained solids or heavy sediments. Bore may be at the bottom or top of pipe depending on type of flow and type of unwanted materials.
Restriction Orifice
Designed for pressure restriction, not flow measurement. No bevel and no limit to Beta ratio.
