Product Description:
The SMC AR425 to AR935 series comprises internally pilot-operated, relieving-type air pressure regulators. Within this range, the AR825, AR835, AR925, and AR935 sub-series belong to the large-bore category. These models feature port sizes ranging from 1-1/4 inches up to 2 inches. They are specifically designed to meet the demands of central compressor stations, high-flow mains, and multi-station centralized air supply systems.
The pilot-operated mechanism uses the supply air itself to actuate the main valve. This design results in significantly improved outlet stability, reduced pressure drop at high flow rates, and minimal outlet fluctuation in response to varying inlet pressures. Compared to direct-acting regulators, this approach offers superior performance and reliability.
This product lineup includes 14 different part numbers. It covers the 1-1/4" and 1-1/2" AR825 and AR835 models — including gauge-equipped versions denoted by the letter "G". Additionally, the 2" AR925 and AR935 models are available, also with G versions. Furthermore, the series includes 2" X218 semi-standard special configurations.
The high-pressure variants, labeled as 25 (AR825/AR925), provide adjustable pressure ranges from 0.05 to 0.83 MPa. Meanwhile, the low-pressure precision variants, identified as 35 (AR835/AR935), allow adjustment from 0.02 to 0.2 MPa. This wide range accommodates both general pneumatic system requirements and specialized low-pressure precision applications such as electronics manufacturing, coating processes, and laboratory air supply.
Features:
The product features large bore ports available in sizes of 1-1/4", 1-1/2", and 2". These ports are designed to support mains and multi-drop centralized supply systems, ensuring efficient and reliable fluid flow.
Equipped with an internal pilot relieving mechanism, the device automatically releases any excess outlet pressure to the atmosphere. This feature helps maintain system stability and prevents overpressure situations without manual intervention.
There are two pressure range options to cater to different application needs. The high-pressure range covers 0.05 to 0.83 MPa, while the low precision range is from 0.02 to 0.2 MPa, allowing flexibility in pressure control and monitoring.
The body is made from die-cast aluminum, providing a robust and durable structure suitable for industrial environments. The AR825 and AR835 models weigh approximately 2.5 kg, while the AR925 and AR935 models weigh around 4.5 kg, reflecting their rugged construction.
Units with the G suffix include a panel pressure gauge from the G46 series. This gauge enables clear and convenient local pressure readings, enhancing operational accuracy and ease of monitoring.
The X218 suffix denotes a semi-standard special configuration unique to SMC. It's recommended to consult with the sales team to confirm precise specifications and ensure the configuration fits your specific requirements.
A locking screw is incorporated on the adjusting handle to prevent accidental tampering once the pressure is set. This safety feature helps maintain consistent performance and avoids unintentional adjustments.
Additionally, various thread options such as Rc (PTF), NPT (F), and G threads are available upon request. This customization allows the product to be compatible with different piping standards and installation needs.
Technical Parameters:
| Ambient / Fluid Temperature |
-5 To 60°C |
| Fluid |
Air |
| Body Material |
Die-cast Aluminum |
| Max. Operating Pressure |
1.0 MPa |
| Pressure Gauge Port |
1/4" |
| Proof Pressure |
1.5 MPa |
Applications:
Central compressor stations play a crucial role in reducing the pressure of main air lines. These stations ensure efficient management of air pressure throughout the system.
High-flow compressed air mains support a plant-wide centralized air supply, enabling consistent and reliable distribution of compressed air to various equipment and processes.
Automated multi-station assembly, packaging, and conveying lines benefit greatly from pneumatic systems, enhancing productivity and precision across manufacturing operations.
Pneumatic manipulators, large bore cylinders, and clusters of pneumatic grippers are essential components for handling and positioning tasks in industrial settings.
Applications such as spray booths, air blow-off, and high-volume process air points require a steady flow of compressed air to maintain optimal operation and product quality.
Heavy industries including mining, metallurgy, cement production, and power plants extensively use compressed air systems for various operational needs.
Original equipment manufacturer (OEM) machines in sectors like textile, printing, paper, and packaging rely on compressed air for efficient and reliable performance.
Support and Services:
SMC provides comprehensive technical support and services for its Solenoid Valves to ensure optimal performance and customer satisfaction. Our support includes product selection assistance, detailed technical documentation, installation guidance, and troubleshooting help. We offer expert advice on valve specifications, compatibility, and application suitability to help you choose the right solenoid valve for your needs.
Our technical support team is available to assist with any inquiries related to the operation, maintenance, and repair of SMC Solenoid Valves. We provide detailed manuals, datasheets, and application examples to facilitate proper usage and integration into your systems. Additionally, we offer training sessions and workshops to enhance your understanding of solenoid valve technologies and best practices.
SMC also delivers after-sales services including warranty support and product replacement options. We are committed to ensuring the reliability and longevity of your solenoid valves through regular updates and improvements based on customer feedback and technological advancements.
For complex applications or custom requirements, SMC offers specialized engineering support to design tailored solenoid valve solutions that meet specific operational demands. Our goal is to provide you with high-quality products and professional support to maximize the efficiency and effectiveness of your pneumatic systems.
Packing and Shipping:
All SMC solenoid valves are carefully packaged to ensure maximum protection during transit. Each valve is individually sealed in anti-static and moisture-resistant packaging to prevent damage and contamination. The products are then placed in sturdy, cushioned boxes designed to absorb shocks and vibrations encountered during shipping.
Shipping is handled through reliable carriers with tracking options available to ensure timely and safe delivery. We offer various shipping methods to accommodate different customer needs, including standard, expedited, and international shipping. Proper labeling and documentation accompany every shipment to facilitate smooth customs clearance and delivery.
For bulk orders or special requirements, customized packaging solutions are available to meet specific handling and transportation conditions. Our commitment is to deliver SMC solenoid valves in perfect condition, ready for immediate installation and use.
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