AR20-01BE-B: SMC Precision Pressure Reducing Valve, the Pressure Regulation Expert for Industrial Pneumatic Systems

Product Overview

The AR20-01BE-B is a precision pressure reducing valve manufactured by SMC Corporation of Japan, belonging to the AR series. This regulator employs a precision pressure adjustment mechanism, featuring high-accuracy pressure regulation, high stability, and ease of operation. It is widely used in industrial automation control systems, providing stable and reliable pressure regulation solutions for pneumatic actuators.

Core Product Advantages

1. High-Precision Pressure Regulation Utilizes a precision pressure adjustment structure, offering high regulation accuracy and stable output pressure. It meets the demands of high-precision pneumatic control, ensuring consistent and reliable operation of pneumatic actuators.
2. High-Stability Design Manufactured with high-quality materials and precise production processes, it exhibits minimal output pressure fluctuation and strong anti-interference capability. This ensures stability and reliability during long-term continuous operation.
3. Easy Operation Equipped with a knob-type adjustment handle, operation is intuitive and convenient, facilitating on-site commissioning and maintenance. This reduces operational difficulty and improves work efficiency.
4. Multiple Valve Types Available The AR series offers various valve types to meet the needs of different air systems, providing high versatility and flexibility. Users can select the appropriate model based on specific application scenarios.

Technical Parameters

Parameter Item	Specification Value	Explanation
Series​	AR Series	Product Series
Port Size​	Rc1/4	Air Port Interface
Operating Pressure Range​	0.05 ~ 0.85 MPa	Working Pressure Range
Maximum Operating Pressure​	1.0 MPa	Max. Working Pressure
Proof Pressure​	1.5 MPa	Pressure Resistance
Working Fluid​	Air	Operating Medium
Ambient Temperature​	-5 ~ 60 °C	Operating Temperature Range
Gauge Port Size​	Rc1/8	Pressure Gauge Connection
Lubrication​	Non-lubricated	Lubrication Type
Structure Type​	Relief Type	Internal Structure

Model Number Breakdown

• AR20: SMC Pressure Reducing Valve Series Code
• 01: Port Size Rc1/4
• BE: With Round Pressure Gauge (with limit indicator)
• B: Standard Configuration (with drain cock, relief type, flow direction left→right)

Working Principle

The AR20-01BE-B employs a pilot-operated pressure reduction structure. When the inlet pressure changes, the adjustment action of the pilot valve causes the main spool to move up or down, altering the opening of the valve port, thereby regulating the outlet pressure. When the outlet pressure exceeds the set value, the pilot valve closes, pressure increases in the upper chamber of the main spool, the valve port closes slightly, and the outlet pressure decreases. When the outlet pressure falls below the set value, the pilot valve opens, pressure decreases in the upper chamber of the main spool, the valve port opens wider, and the outlet pressure increases. Through this feedback regulation mechanism, the outlet pressure is stabilized near the set value.

Typical Application Scenarios

1. Industrial Automation Production Lines In automated production lines for automotive manufacturing, electronic equipment production, etc., it is used to provide stable and reliable pressure regulation for pneumatic actuators such as cylinders, grippers, and solenoid valves. This ensures the long-term stable operation of pneumatic systems, improving production efficiency and product quality.
2. Packaging Machinery For controlling actions like material conveying, sorting, and palletizing in packaging machines. The pressure regulator enables pressure adjustment for pneumatic actuators, ensuring precision and stability in the production process.
3. Robotics As part of the pneumatic control system for robots, it is used to control the action accuracy of pneumatic actuators, ensuring the precision of robot gripping, positioning, and placing operations, thereby improving robot motion accuracy and efficiency.
4. Precision Manufacturing Equipment In equipment for semiconductor manufacturing, precision machining, etc., it is used to control the action accuracy of pneumatic actuators, ensuring stability and repeatability in the machining process and improving product quality.

Installation and Usage Precautions

1. Installation Requirements The pressure reducing valve should be installed vertically on horizontal piping to ensure stable operation. Before installation, check that the air supply pressure meets the 0.05~0.85 MPa requirement and ensure the air supply is clean. During installation, note that the arrow on the valve body must match the direction of medium flow; it must not be installed in reverse.
2. Operating Environment The operating temperature range is -5 ~ 60°C. Avoid use in extremely high or low-temperature environments. Maintain relative humidity within an appropriate range to prevent moisture from affecting equipment lifespan. The working medium should be filtered through a 40μm or larger filter element before use.
3. Piping Connection Before piping, thoroughly blow or clean out cutting powder, cutting oil, dust, etc., from inside the pipes. When using threaded connections for piping and fittings, prevent chips from the threaded parts and fragments of sealing tape from entering the piping interior. When using sealing tape, leave 1.5-2 pitch lengths at the thread end without tape.
4. Pressure Adjustment Set the pressure value using the regulator’s adjustment knob. The set value should not be lower than the factory setting to prevent the regulator from malfunctioning. After adjustment, check the regulator’s performance to ensure long-term stable operation.
5. Regular Maintenance Regularly inspect the regulator’s connecting piping and valves to ensure no leakage. Periodically clean the regulator’s surface to maintain cleanliness. Regularly check the regulator’s operational performance to ensure long-term stable operation. Before reuse after prolonged shutdown, performing a venting/flushing operation is recommended.
6. Safe Operation Ensure the equipment is properly grounded before operation to prevent electric shock risk. Avoid contact with moving parts during operation to prevent injury. In case of equipment failure, stop immediately for repair by qualified personnel. Before installation, depressurize to prevent high-pressure medium ejection causing injury. Strictly prohibit use beyond the product’s rated pressure, temperature, and medium range.

Concluding Summary

The AR20-01BE-B precision pressure reducing valve is the “pressure regulation expert” for industrial pneumatic systems. It perfectly combines high-precision pressure regulation, high stability, ease of operation, and multiple valve type options, providing efficient, reliable, and precise pressure regulation solutions for various industrial applications.

Choosing the AR20-01BE-B means choosing to drive your automation system towards higher efficiency with high reliability and high stability!

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