Product Description:
The SMC AR425 to AR935 series represents an internally pilot-operated, relieving-type air pressure regulator. Within this series, the AR825, AR835, AR925, and AR935 sub-models belong to the large-bore category, featuring port sizes ranging from 1-1/4 inches to 2 inches. These regulators are specifically designed for demanding applications such as central compressor stations, high-flow mains, and multi-station centralized air supply systems.
Utilizing a pilot-operated mechanism, the main valve is actuated directly by the supply air. This design offers significant advantages over traditional direct-acting regulators, including superior outlet pressure stability, reduced pressure drop at high flow rates, and minimal fluctuations in outlet pressure when inlet pressure varies.
The product listing comprises 14 distinct part numbers. These include the 1-1/4" and 1-1/2" AR825 and AR835 models (with versions equipped with gauges, denoted as G versions), as well as the 2" AR925 and AR935 models (also available in gauge-equipped versions). Additionally, there are 2" X218 semi-standard special configurations offered.
Regarding pressure ranges, the high-pressure variants (indicated by 25, such as AR825 and AR925) offer an adjustable range from 0.05 to 0.83 MPa. Meanwhile, the low-pressure precision types (marked as 35, including AR835 and AR935) have an adjustable range from 0.02 to 0.2 MPa. These options effectively cover a broad spectrum of applications, from general pneumatic systems to low-pressure precision uses like electronics manufacturing, coating processes, and laboratory air supplies.
Features:
The product features large bore ports available in sizes of 1-1/4", 1-1/2", and 2". These ports are designed for mains and multi-drop centralized supply systems, ensuring versatile and efficient connectivity.
It incorporates an internal pilot relieving mechanism which automatically releases any excess outlet pressure to the atmosphere. This feature helps maintain safe and consistent pressure levels during operation.
There are two pressure range options to suit different requirements: a high precision range from 0.05 to 0.83 MPa, and a low precision range from 0.02 to 0.2 MPa. Each range is designed to meet specific application needs.
The body is constructed from die-cast aluminum, providing durability and a rugged build suitable for plant use. The weight of the units varies depending on the model, with AR825/835 weighing 2.5 kg and AR925/935 weighing 4.5 kg.
Units with the G suffix come equipped with a panel pressure gauge from the G46 series. This addition allows for clear and convenient local pressure readings, enhancing operational monitoring.
The X218 suffix indicates that the unit is configured as an SMC semi-standard special version. For detailed specifications, it is advised to consult with the sales team to confirm exact configurations.
To prevent accidental adjustments, a locking screw is included on the adjusting handle. This feature ensures that settings remain stable and secure after being finalized.
Various thread options are available upon request, including Rc (PTF), NPT (F), and G threads. This flexibility allows the product to be adapted to different installation and connection standards.
Technical Parameters:
| Ambient / Fluid Temperature |
-5 To 60°C |
| Pressure Gauge Port |
1/4" |
| Max. Operating Pressure |
1.0 MPa |
| Proof Pressure |
1.5 MPa |
| Body Material |
Die-cast Aluminum |
| Fluid |
Air |
Applications:
Central compressor stations play a crucial role in managing and reducing the pressure within main air lines. These stations ensure that the air pressure is optimized for various industrial applications, enhancing the efficiency and safety of operations.
High-flow compressed air mains are essential for delivering a centralized air supply throughout an entire plant. This centralized system supports diverse processes by providing consistent and reliable compressed air to multiple locations simultaneously.
Modern manufacturing often relies on multi-station automated assembly lines, packaging systems, and conveying equipment. These complex setups benefit significantly from precise pneumatic control, improving productivity and reducing manual labor.
Pneumatic manipulators, large bore cylinders, and clusters of pneumatic grippers are widely used in material handling and automation. These components enable precise and powerful movements, contributing to efficient and flexible industrial workflows.
In applications such as spray booths, air blow-off stations, and other high-volume process air points, compressed air is indispensable for ensuring quality finishes and thorough cleaning. These processes demand reliable air supply to maintain high standards.
The heavy industry sectors, including mining, metallurgy, cement manufacturing, and power generation plants, rely extensively on robust pneumatic systems. These environments require durable and high-performance components to withstand demanding conditions.
Original Equipment Manufacturer (OEM) machines used in textile, printing, paper production, and packaging industries incorporate pneumatic technology to enhance operational efficiency. Pneumatics provide precise control and consistent performance in these specialized equipment types.
Support and Services:
SMC provides comprehensive technical support and services for our Solenoid Valves to ensure optimal performance and customer satisfaction. Our support team offers expert guidance on product selection, installation, and maintenance to help you maximize the efficiency and lifespan of your solenoid valves. We also provide detailed product documentation, including datasheets, manuals, and troubleshooting guides, to assist you in resolving common issues quickly and effectively. For specialized applications or complex system integration, our engineers are available to offer tailored solutions and technical consultation. Additionally, SMC’s global service network ensures prompt after-sales support and access to genuine replacement parts, helping to minimize downtime and maintain continuous operation of your pneumatic systems.
Packing and Shipping:
All SMC Solenoid Valves are carefully packaged to ensure safe delivery and optimal protection during transit. Each valve is individually sealed in anti-static bags and cushioned with protective materials to prevent damage from shocks and vibrations.
The packaging includes clear labeling with product specifications, model numbers, and handling instructions to facilitate easy identification and proper handling.
For shipping, SMC Solenoid Valves are packed in sturdy, durable cartons designed to withstand the rigors of transportation. Depending on the order size, pallets may be used to consolidate shipments securely.
We work with reliable courier and freight services to guarantee timely delivery and provide tracking information for all shipments.
Special packaging options are available upon request, including custom cushioning, climate-controlled shipping, and expedited delivery to meet specific customer requirements.
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