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What are Orifice Flanges? Functionality, Types, and Applications

What are Orifice Flanges? Functionality, Types, and Applications

At SK Steel Corporation, we take pride in being a leading Industrial orifice flanges manufacturer, supplier, and exporter, and our specialization lies in providing top-notch Orifice Flanges to meet the diverse needs of our valued customers. With years of experience in the industry, we have established ourselves as a reliable and customer-centric company, committed to delivering excellence in every aspect of our business. for utmost reliability and performance, choose us for the best quality stainless steel orifice flanges.

Orifice flanges are essential components used in pipelines and flow control systems, allowing precise measurement and regulation of fluid or gas flow rates. These flanges feature a small, precision-engineered orifice hole that acts as a restriction in the flow path, creating a pressure drop across the flange. By measuring this pressure drop, engineers can accurately determine the flow rate, making orifice flanges indispensable in various industries.

What Are Orifice Flanges?

Specialized flanges called orifice flanges are made to hold orifice plates. These plates have carefully crafted orifices or holes that limit the passage of liquids or gases via a pipeline. Orifice flanges are primarily used to measure and regulate the flow rate inside a system. Orifice flanges allow for pressure drop by forming a constriction, which may then be utilized to determine flow rate using accepted fluid dynamics concepts.

Orifice Flanges


Flow Measurement: Orifice flanges are often utilized in several industrial applications for efficient flow measurement. They provide a pressure differential across the orifice plate by adding a restriction to the pipeline. It is possible to detect this pressure differential precisely because it is inversely related to the flow rate.

Pressure Regulation: Orifice flanges can also be used to control the pressure of fluids or gases inside a system. Operators may regulate the rate of flow and maintain appropriate pressure levels by changing the orifice’s size.

Fluid Mixing: Orifice flanges may occasionally be used to combine two or more fluids by injecting them into a single pipeline through several orifices. This is very helpful in the treatment of wastewater and chemical processes.

Types of Orifice Flanges

Concentric Orifice Flanges: Along orifice flanges have an orifice plate in the center with an orifice hole that is concentrically positioned. They are often employed for regulating and monitoring pure, viscous fluids.

Eccentric Orifice Flanges: Eccentric orifice flanges may handle fluids with attached particles or fluids because they have an off-center orifice hole. This design guarantees accurate flow monitoring while preventing orifice blockage.

Segmental Orifice Flanges: Segmental orifice flanges are made for uses like storing and transfer of liquids and gases where great precision is required. They have an aperture plate in the form of a segment that allows for exact measuring.

Applications of Orifice Flanges

Orifice flanges find applications across various industries, including:

Oil and Gas: In pipelines and refineries, orifice flanges are used to measure and control the flow of oil, natural gas, and other hydrocarbons.

Petrochemicals: They are essential for precise flow monitoring and control in chemical operations in the petrochemical sector.

Water Treatment: Orifice flanges are used in water treatment plants to regulate the flow of chemicals and wastewater.

HVAC Systems: In heating, ventilation, and air conditioning (HVAC) systems, orifice flanges are used for controlling the flow of refrigerants and other fluids.

Manufacturing: To provide accurate fluid control, they are used in many manufacturing operations, including the manufacture of food and beverages.


In many fluid and gas handling systems, industrial orifice flanges are essential parts. In a variety of sectors, their capacity to accurately measure and control flow rates makes them crucial for preserving process efficiency and safety. Engineers and operators may pick these vital parts for their systems with confidence and efficiency by having a thorough grasp of the various orifice flange types and their uses.

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