

• ARO-SROP-7.1 • ARO-MROP-7.2 • ARO-FCROP-7.3
What is a Restriction Orifice Plate ?
Arrotop is a leading provider of precision-engineered flow measurement solutions, offering a range of restriction orifice plates designed to deliver accurate and reliable flow measurement in various industrial applications. Our restriction orifice plates are built to meet the highest standards of quality and performance, ensuring efficient operation and long-term reliability.
Product Data
Arrotop is a renowned manufacturer and supplier of high-quality Restriction Orifice Plates in India, engineered to control flow and safely reduce pressure in systems handling liquids, gases, and steam. These plates deliver precise flow restriction and consistent pressure drop performance, making them ideal for a wide range of industrial processes. Available in single-stage, multi-stage, and flow control designs, Arrotop’s Restriction Orifice Plates are tailored to meet diverse operational needs while enhancing system safety and efficiency.
Types of Restriction Orifice Plates
Single-Stage Restriction Orifice Plate
Model Number: ARO-SROP-7.1
Designed to provide a single pressure drop in the flow stream, single-stage restriction orifice plates are ideal for applications requiring a precise reduction in pressure. They are commonly used in flow control and pressure reduction applications.
Multi-Stage Restriction Orifice Plate
Model Number: ARO-MROP-7.2
These plates feature multiple stages of pressure drop, making them suitable for applications that require gradual reduction in pressure to avoid cavitation and minimize noise.
Flow Control Restriction Orifice Plate
Model Number: ARO-FCROP-7.3
Designed specifically for precise flow control, these orifice plates ensure accurate flow measurement and control in critical applications.
Technical Information
| Single-Stage Model (ARO-SROP-001) | Multi-Stage Model (ARO-MROP-002) | Flow Control Model (ARO-FCROP-003) | |
|---|---|---|---|
| Material | SS 304/L, 316/L, Hastelloy, Carbon Steel, Monel, (special alloys on request) | SS 304/L, 316/L, Hastelloy, Carbon Steel, Monel, (special alloys on request) | SS 304/L, 316/L, Hastelloy, Carbon Steel, Monel, (special alloys on request) |
| Connection Sizes | 1/2″ NPT, 3/4″ NPT, 1″ NPT | 1/2″ NPT, 3/4″ NPT, 1″ NPT | 1/2″ NPT, 3/4″ NPT, 1″ NPT |
| Pipe Sizes | 2″ to 120″ | 2″ to 120″ | 2″ to 120″ |
| Pressure Rating | Up to 6000 PSI | Up to 6000 PSI | Up to 6000 PSI |
| Accuracy | ±1.0% of reading | ±1.0% of reading | ±1.0% of reading |
| Features | Simple design, easy installation, robust construction | Multiple stages of pressure drop, noise reduction, cavitation prevention | Precise flow control, robust construction, easy installation |
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 Restriction Orifice Plates
- Oil and Gas: Used for accurate flow measurement and pressure control in pipelines and processing plants.
- Chemical Processing: Ensures precise flow control in various chemical processes.
- Power Generation: Used in steam and water flow measurement and control.
- Water and Wastewater Treatment: Accurate measurement and control of flow in treatment facilities.
- HVAC Systems: Provides precise measurement and control of airflow in heating, ventilation, and air conditioning systems.
- Food and Beverage: Maintains consistent flow control in production lines, ensuring product quality and consistency.
- Pharmaceutical: Delivers accurate flow measurement for precise control in manufacturing processes.
- Mining: Handles slurry and fluid flows effectively, contributing to operational efficiency.
- Pulp and Paper: Ensures accurate flow measurement of liquids and gases in production processes.
- Marine and Shipbuilding: Measures various fluids in ship systems, ensuring efficient operations.
- Automotive: Provides precise fluid measurement in manufacturing processes.
Advantages of Arrotop’s Restriction Orifice Plates
- High Accuracy: Ensures precise flow measurement and control.
- Robust Construction: Built to withstand various industrial conditions.
- Versatility: Suitable for a wide range of applications and process conditions.
- Easy Installation and Maintenance: Designed for quick installation and minimal maintenance requirements.
- Noise Reduction: Multi-stage designs effectively reduce noise and prevent cavitation.
- Cost-Effective: Provides a reliable alternative to valves for pressure reduction and flow control.
- Maintenance-Free: Solid design with no moving parts minimizes maintenance needs.
- Long Lifespan: Durable materials ensure extended service life even under harsh conditions.
- Flexible Design: Can be tailored to meet specific pressure drop requirements, avoiding cavitation and choked flow issues.
Overview
Arrotop is a renowned manufacturer and supplier of high-quality Restriction Orifice Plates in India, engineered to control flow and safely reduce pressure in systems handling liquids, gases, and steam. These plates deliver precise flow restriction and consistent pressure drop performance, making them ideal for a wide range of industrial processes. Available in single-stage, multi-stage, and flow control designs, Arrotop’s Restriction Orifice Plates are tailored to meet diverse operational needs while enhancing system safety and efficiency.
Types of Restriction Orifice Plates
Single-Stage Restriction Orifice Plate
Model Number: ARO-SROP-7.1
Designed to provide a single pressure drop in the flow stream, single-stage restriction orifice plates are ideal for applications requiring a precise reduction in pressure. They are commonly used in flow control and pressure reduction applications.
Multi-Stage Restriction Orifice Plate
Model Number: ARO-MROP-7.2
These plates feature multiple stages of pressure drop, making them suitable for applications that require gradual reduction in pressure to avoid cavitation and minimize noise.
Flow Control Restriction Orifice Plate
Model Number: ARO-FCROP-7.3
Designed specifically for precise flow control, these orifice plates ensure accurate flow measurement and control in critical applications.
Features :
- Precise Flow Control: Our flow control orifice plates are engineered to deliver accurate flow measurement while maintaining a consistent pressure drop, ensuring reliable operation across diverse industrial applications.
- Single-Stage & Multi-Stage Designs: Choose from single-stage or multi-stage restriction orifice plates. Multi-stage plates provide gradual pressure reduction, minimizing turbulence, vibration, and cavitation in pipelines.
- Cavitation Prevention: Specifically designed as a restriction orifice for cavitation prevention, our plates protect pumps, valves, and piping systems from damage caused by sudden pressure drops.
- Robust Construction: Manufactured from high-quality materials such as SS 304/L, SS 316/L, Carbon Steel, and Alloy Steel, ensuring long-term durability even in harsh operating environments.
- Versatility Across Fluids: Suitable for liquids, gases, and steam, enabling precise pressure reduction and flow control in a wide range of industrial processes.
- Compact & Easy Installation: Can be installed in horizontal, vertical, or inclined pipelines with minimal maintenance, providing an efficient alternative to valves for pressure reduction.
- Customizable Solutions: Arrotop, a trusted restriction orifice plate manufacturer in India and supplier, offers customization of bore size, plate thickness, multi-stage configuration, and coatings to meet specific process requirements.
Technical Information
| Single-Stage Model (ARO-SROP-001) | Multi-Stage Model (ARO-MROP-002) | Flow Control Model (ARO-FCROP-003) | |
|---|---|---|---|
| Material | SS 304/L, 316/L, Hastelloy, Carbon Steel, Monel, (special alloys on request) | SS 304/L, 316/L, Hastelloy, Carbon Steel, Monel, (special alloys on request) | SS 304/L, 316/L, Hastelloy, Carbon Steel, Monel, (special alloys on request) |
| Connection Sizes | 1/2″ NPT, 3/4″ NPT, 1″ NPT | 1/2″ NPT, 3/4″ NPT, 1″ NPT | 1/2″ NPT, 3/4″ NPT, 1″ NPT |
| Pipe Sizes | 2″ to 120″ | 2″ to 120″ | 2″ to 120″ |
| Pressure Rating | Up to 6000 PSI | Up to 6000 PSI | Up to 6000 PSI |
| Accuracy | ±1.0% of reading | ±1.0% of reading | ±1.0% of reading |
| Features | Simple design, easy installation, robust construction | Multiple stages of pressure drop, noise reduction, cavitation prevention | Precise flow control, robust construction, easy installation |
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 Restriction Orifice Plates
- Oil and Gas: Used for accurate flow measurement and pressure control in pipelines and processing plants.
- Chemical Processing: Ensures precise flow control in various chemical processes.
- Power Generation: Used in steam and water flow measurement and control.
- Water and Wastewater Treatment: Accurate measurement and control of flow in treatment facilities.
- HVAC Systems: Provides precise measurement and control of airflow in heating, ventilation, and air conditioning systems.
- Food and Beverage: Maintains consistent flow control in production lines, ensuring product quality and consistency.
- Pharmaceutical: Delivers accurate flow measurement for precise control in manufacturing processes.
- Mining: Handles slurry and fluid flows effectively, contributing to operational efficiency.
- Pulp and Paper: Ensures accurate flow measurement of liquids and gases in production processes.
- Marine and Shipbuilding: Measures various fluids in ship systems, ensuring efficient operations.
- Automotive: Provides precise fluid measurement in manufacturing processes.
FAQs for Restriction Orifice Plate
Q. What is a Restriction Orifice Plate?
A Restriction Orifice Plate is a flow control device that reduces pressure and regulates flow in pipelines. It is commonly used to protect pumps, valves, and piping systems from high-pressure surges while ensuring accurate flow measurement.
Q. What are the types of Restriction Orifice Plates?
Arrotop manufactures:
- Single-Stage Restriction Orifice Plates – provide a single pressure drop for basic flow control.
- Multi-Stage Restriction Orifice Plates – offer gradual pressure reduction, minimizing cavitation, turbulence, and noise.
- Flow Control Orifice Plates – designed for precise flow measurement and control in critical processes.
Q. How does a multi-stage restriction orifice plate prevent cavitation?
By splitting the pressure drop into multiple stages, multi-stage restriction orifice plates reduce the velocity and energy of the fluid gradually, preventing cavitation and protecting pumps, valves, and pipelines from damage.
Q. Can Restriction Orifice Plates be used for steam, gas, and liquids?
Yes. Arrotop Restriction Orifice Plates are suitable for liquids, gases, and steam, making them versatile for chemical, power generation, oil & gas, water treatment, and other industrial applications.
Q. How do Restriction Orifice Plates differ from valves?
Unlike valves, restriction orifice plates provide fixed, maintenance-free pressure reduction without moving parts, ensuring consistent flow control and long-term reliability.
Q. How do Restriction Orifice Plates improve system safety?
By reducing sudden pressure surges and controlling flow, restriction orifice plates prevent damage to pipelines, pumps, and valves, ensuring safer and more reliable operations in critical industrial systems.