Concentric Orifice Plate

• ARO-CP-001

What is a Concentric Orifice Plate?

A Concentric Orifice Plate is a fundamental device used in fluid flow measurement systems. It comprises a flat, circular plate with a centrally located hole. When installed in a pipeline, this plate creates a restriction, causing a differential pressure drop that is proportional to the fluid’s flow rate. This design’s simplicity, reliability, and precision make it essential for various industrial applications, including chemical processing, oil and gas, and power generation.

Product Data

Overview

At Arrotop, we take pride in being a reliable manufacturer and supplier of Concentric Orifice Plates in India. Designed with a precisely machined central bore, our orifice plates create a controlled pressure drop to help accurately measure and calculate fluid flow rates.

Manufactured from high-quality materials, these plates ensure consistent performance in demanding environments and require minimal maintenance. Whether you’re working with steam, gas, or liquids, Arrotop’s Concentric Orifice Plates are engineered for accuracy, durability, and long-term efficiency.

As a leading manufacturer in India, we also offer custom concentric orifice plate in various sizes, materials, and coatings to meet your project-specific requirements.

Arrotop’s concentric orifice plates are designed and manufactured in accordance with ISO 5167 and ASME flow measurement standards, ensuring accuracy and repeatability.

Technical Information

Model NumberARO-CP-001
MaterialSS 304/L, 316/L, Duplex, Super Duplex, Hastelloy,
Carbon Steel, Monel, Inconel, PP, PVC, PTFE-coated,
Stellite-coated (special alloys on request)
Sizes0.5″ to 24″ (up to 48″ on request)
Beta Ratio0.1 to 0.75
Thickness3.18 mm, 6.35 mm, 9.52 mm, 12.7 mm (other on request)
Effective RangeTypically suitable for Reynolds numbers between
5,000 and \(10^8\)
StandardsISO 5167, ASME B16.36, BS 1042, API 2530, AGA Report 3
Preferred Range for Accuracy10,000 to 1,000,000
Fluid TypesLow viscosity and clean liquid, gas, or dry steam
Accuracy±0.5% of maximum flow rate
Repeatability± 0.1% of the indicated flow rate
Tapping MethodsFlange Taps, Corner Taps, Radius Taps

Dimensional Data

Sizes Chart

DN (Nominal Diameter) Orifice Diameter (mm) Plate Thickness (mm)
DN15 (0.5″) 15 3.18
Dn25 (1″) 25 3.18
DN50 (2″) 50 6.35
DN100 (4″) 100 6.35
DN150 (6″) 150 9.52
Dn200 (8″) 200 9.52
DN300 (12″) 300 12.7
DN400 (16″) 400 12.7
DN600 (24″) 600 12.7

Applications of Arrotop Concentric Orifice Plate

The Arrotop Concentric Orifice Plate is widely used in various industries for its exceptional flow measurement capabilities:

  • Chemical Processing: Provides precise flow measurement for chemical flows, enhancing process efficiency and safety.
  • Oil and Gas: Essential for monitoring fluid flow in pipelines, optimizing production, and maintaining safety standards.
  • Power Generation: Used in steam and water flow measurement, contributing to efficient energy production and system control.
  • Water Treatment: Ensures accurate flow measurement in water and wastewater treatment processes, supporting regulatory compliance.
  • Food and Beverage: Maintains precise flow control in production lines, ensuring consistent product quality and operational efficiency.
  • Pharmaceutical: Offers accurate flow measurement for sensitive processes, ensuring product quality and compliance.
  • HVAC Systems: Utilized in heating, ventilation, and air conditioning systems for efficient energy use and climate control.
  • Mining: Measures slurry and fluid flows in mining operations, improving operational efficiency and resource management.
  • Pulp and Paper: Ensures accurate measurement of liquid and gas flows in production, contributing to quality control and efficiency.
  • Marine and Shipbuilding: Used for measuring various fluids in ship systems, ensuring operational efficiency.
  • Automotive: Provides precise measurement of fluids in manufacturing processes, supporting quality control and process optimization.

Advantages of Arrotop’s Concentric Orifice Plate

  • Precision: Delivers accurate flow measurements due to the well-defined pressure drop across the plate.
  • Versatility: Ideal for various fluids including gases, liquids, and steam, adaptable to multiple industrial applications.
  • Durability: Constructed from robust materials to withstand harsh conditions and aggressive fluids.
  • Ease of Use: Simple installation and low maintenance requirements.
  • Cost-Efficiency: Provides a reliable and economical solution for flow measurement.
  • Broad Size Range: Available in multiple sizes to meet diverse application needs.
  • Customization: Offers tailored solutions with various materials and coatings for specific process conditions.
  • Reliability: Ensures stable and repeatable measurements over time, critical for effective process control.
  • Arrotop Assurance: Represents Arrotop’s dedication to delivering high-quality, innovative products.

FAQS for Concentric Orifice Plate

Q. What is a concentric orifice plate used for?

A concentric orifice plate is used for accurate differential pressure flow measurement of clean liquids, gases, and steam in industrial pipelines. It is the most commonly used orifice plate type due to its simplicity and reliability.

Q. When should a concentric orifice plate be selected?

Concentric orifice plates should be selected when the process fluid is clean and free from solids or sediment, and where stable, repeatable flow measurement is required as per international standards.

Q. Which standards are followed for concentric orifice plate design?

Concentric orifice plates are designed and manufactured in accordance with ISO 5167, ASME MFC-3M, AGA-3, BS 1042, and ISA RP 3.2, depending on application requirements.

Q. What materials are commonly used for concentric orifice plates?

Common materials include SS 304, SS 316, SS 316L, and carbon steel. For corrosive or high-temperature applications, duplex stainless steel, alloy steel, or special coatings can be provided.

Q. Are concentric orifice plates suitable for gas, steam, and liquid flow?

Yes, concentric orifice plates are widely used for gas, steam, and clean liquid flow measurement, provided the plate is correctly sized, installed, and calibrated.