Orifice Plate Manufacturer in India
Arrotop is a leading Orifice Plate Manufacturer in India, supplying precision-engineered orifice plates for accurate flow measurement of liquids, gases, and steam across industrial applications.
Orifice plates are widely used differential pressure flow measurement devices installed in pipelines to measure flow rate by creating a controlled pressure drop. Due to their simple design, high reliability, and cost-effectiveness, orifice plates remain one of the most preferred primary flow elements worldwide.
Orifice Plates for Differential Pressure Flow Measurement
Orifice plates operate on the Differential Pressure (DP) principle, where the pressure difference generated across the plate is proportional to the flow rate of the fluid. When fluid passes through the precisely machined bore, velocity increases and pressure decreases, enabling accurate flow calculation.
These plates are suitable for a wide range of:
- Liquids
- Gases
- Steam
- High-pressure and high-temperature services
They offer excellent repeatability, long service life, and minimal maintenance, making them ideal for demanding industrial environments.
Types of Orifice Plates manufactured by Arrotop
Orifice plates come in various types like concentric, eccentric, segmental, conical and square edged. Each is designed for specific fluids and flow conditions to ensure accurate and efficient flow measurement across diverse industrial applications.
A concentric orifice plate ensures high accuracy and is ideal for clean liquids, gases, and steam, offering the lowest uncertainty in flow measurement.
Eccentric orifice plates, with an off-center bore, offer accurate and reliable flow measurement, especially for fluids with solids or entrained gases.
Segmental Orifice Plate, with a segment-shaped bore, ensures accurate flow measurement of fluids with solids, vapors, or condensates.
Quarter circle orifice plates feature a rounded inlet, combining orifice and nozzle benefits for accurate flow measurement in viscous or low Reynolds fluids.
Multi-hole orifice plates, with 4 radially placed bores, enhance flow measurement accuracy and stability in systems using square edge, eccentric, or segmental types.
Conical entrance orifice plates ensure precise flow measurement in pipelines, widely used in oil and gas industries for accurate oil and gas flow monitoring.
Restriction orifice plates reduce flow and pressure to protect downstream equipment and minimize noise, ensuring safe and efficient system operation.
Square-edged concentric orifice plates measure bidirectional flow with precision, using a straight central hole machined into a thin metal plate.
RTJ orifice plates with integral oval/octagonal gaskets suit high-temp, high-pressure flows; ideal for clean liquids, gases, and low-velocity steam.
Why Choose Arrotop as Your Orifice Plate Manufacturer?
At Arrotop, we specialize in designing and manufacturing high-quality orifice plates tailored to diverse industrial flow measurement requirements. Our integrated design, manufacturing, and testing facilities are among the finest in the country.
We have successfully supplied Orifice Plate Assemblies to numerous domestic and international projects across industries such as oil & gas, power, petrochemicals, and process plants.
Advantages :
- Precision manufacturing for accurate flow measurement
- Compliance with international standards
- Proven performance in critical applications
- Strong domestic and export supply capability
Materials Offered for Orifice Plates
We manufacture custom orifice plates in a wide range of materials, including:
- Stainless Steel (SS 304 / 304L)
- Stainless Steel (SS 316 / 316L)
- Carbon Steel
- Duplex Stainless Steel
- Super Duplex Stainless Steel
- Alloy Steel
Material selection is optimized based on fluid type, pressure, temperature, and corrosion resistance requirements.
Custom Orifice Plate & Assembly Solutions
We offer fully customized solutions including:
- Custom bore sizes and plate thickness
- Special coatings and surface treatments
- Orifice Flange Unions
- Orifice Carrier Assemblies
- Complete documentation and technical support
Our experts assist with selection, installation, and maintenance, ensuring optimal performance throughout the product lifecycle.
Compliance, Standards & Testing
Our orifice plates are engineered and manufactured in accordance with internationally recognized flow measurement standards, ensuring accuracy and repeatability across applications. Designs comply with standards such as ISO 5167, ASME MFC-3M, AGA-3, BS 1042, and ISA RP 3.2, depending on customer and project requirements.
To ensure material integrity and service suitability, routine quality checks such as PMI testing and NACE compliance can be provided where required.
Advanced Design & Installation Options
We offer multiple pressure tapping configurations, including corner taps, flange taps, and D–D/2 taps, selected based on pipe size and flow conditions. Vent and drain holes can be incorporated as per application needs to ensure accurate measurement in liquid, gas, or steam service.
Orifice plates can be supplied with weld neck, slip-on, threaded, or socket-weld orifice flange unions, manufactured in accordance with applicable ANSI standards.
Material & Customization Capabilities
While stainless steel grades such as SS 304, SS 316, and SS 316L are commonly used, we also offer orifice plates in special alloys and coated materials including Hastelloy, Monel, and PTFE-lined options for corrosive and high-temperature services.
Each orifice plate can be customized with specific bore sizes, plate thicknesses, coatings, gaskets, and fastening materials to match process conditions and customer specifications.
FAQs for Orifice Plates
Q. What is an orifice plate and how does it work?
An orifice plate is a differential pressure flow measurement device installed in a pipeline. It measures flow by creating a pressure drop across a precisely machined bore, which is proportional to the fluid flow rate.
Q. What standards are used for orifice plate design and calculation?
Orifice plates are designed and calculated as per international standards such as ISO 5167, ASME MFC-3M, AGA-3, BS 1042, and ISA RP 3.2, depending on application and customer requirements.
Q. What materials are used for manufacturing orifice plates?
Orifice plates are commonly manufactured in SS 304, SS 316, SS 316L, Carbon Steel, and special alloys such as Duplex, Super Duplex, Monel, and Hastelloy, depending on pressure, temperature, and corrosion conditions.
Q. How accurate is an orifice plate for flow measurement?
When designed and installed as per standards, an orifice plate can achieve an accuracy of ±0.5% to ±1%, depending on flow conditions, piping configuration, and differential pressure measurement.
Q. What pressure tapping arrangements are available for orifice plates?
Common pressure tapping arrangements include corner taps, flange taps, and D–D/2 taps. The selection depends on pipe size, line conditions, and applicable standards.
Q. Can orifice plates be supplied as complete assemblies?
Yes, orifice plates can be supplied as complete assemblies, including orifice flange unions, carrier rings, gaskets, studs, and meter run assemblies, ready for installation.