Product Description:
The SMC AR425 to AR935 series represents a line of internally pilot-operated, relieving-type air pressure regulators. Within this range, the AR825, AR835, AR925, and AR935 sub-series are part of the large-bore category, featuring port sizes from 1-1/4" up to 2". These models are specifically engineered for use in central compressor stations, high-flow main lines, and multi-station centralized air supply systems.
The pilot-operated mechanism utilizes supply air to actuate the main valve, which offers significant advantages. Compared to direct-acting regulators, this design ensures superior outlet pressure stability, reduces pressure drops at high flow rates, and minimizes outlet pressure fluctuations in response to variations in inlet pressure.
This collection includes a total of 14 part numbers. It covers the 1-1/4" and 1-1/2" AR825 and AR835 models, including versions equipped with gauges (denoted as G versions). It also includes the 2" AR925 and AR935 models, also in gauge-equipped variants, along with the 2" X218 semi-standard special configurations.
Regarding pressure ranges, the high-pressure types (designated as 25: AR825/AR925) offer adjustable settings from 0.05 to 0.83 MPa. Meanwhile, the low-pressure precision types (denoted as 35: AR835/AR935) cover 0.02 to 0.2 MPa. This range adequately supports both general pneumatic system requirements and applications demanding low-pressure precision, such as electronics manufacturing, coating processes, and laboratory air supply.
Features:
The product features large bore ports sized at 1-1/4", 1-1/2", and 2", designed to accommodate mains and multi-drop centralized supply systems efficiently.
It incorporates an internal pilot relieving mechanism that automatically vents any excess outlet pressure to the atmosphere, ensuring safe and stable operation.
There are two available pressure ranges for this unit: a high range from 0.05 to 0.83 MPa, and a low precision range from 0.02 to 0.2 MPa, catering to different application requirements.
The body is constructed from die-cast aluminum, providing a robust and durable structure suitable for industrial plant environments. The AR825/835 models weigh approximately 2.5 kg, while the AR925/935 models are slightly heavier at 4.5 kg.
Units with the G suffix are supplied with a G46 series panel pressure gauge, which allows for easy and clear local pressure readings directly on-site.
The X218 suffix denotes an SMC semi-standard special configuration. Customers should consult with the sales team to confirm the exact specifications required for their applications.
To prevent accidental adjustments after setting, a locking screw is provided on the adjusting handle, enhancing operational safety.
Thread options including Rc (PTF), NPT (F), and G threads are available upon request to meet various connection standards.
Technical Parameters:
| Proof Pressure |
1.5 MPa |
| Ambient / Fluid Temperature |
-5 to 60°C |
| Fluid |
Air |
| Max. Operating Pressure |
1.0 MPa |
| Pressure Gauge Port |
1/4" |
| Body Material |
Die-cast Aluminum |
Applications:
Centralized Air Systems
Central compressor stations play a crucial role in reducing pressure along main air lines. These systems ensure efficient distribution and regulation of compressed air throughout various facilities.
High-flow compressed air mains support plant-wide centralized air supply, providing a reliable and consistent source of compressed air to multiple points within industrial operations.
Automated and Pneumatic Equipment
Multi-station automated assembly, packaging, and conveying lines utilize compressed air to enhance precision and efficiency in manufacturing processes.
Pneumatic manipulators, large bore cylinders, and clusters of pneumatic grippers are commonly employed to handle materials and components with high speed and accuracy.
Specialized Applications
Compressed air is extensively used in spray booths, air blow-off systems, and other high-volume process air points, supporting various surface treatment and cleaning operations.
Heavy industries such as mining, metallurgy, cement production, and power plants also depend on robust compressed air solutions to maintain continuous and safe operations.
OEM Machinery
Original equipment manufacturer (OEM) machines within textile, printing, paper, and packaging industries often integrate compressed air technology to optimize performance and reliability.
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, troubleshooting, and maintenance to help you achieve efficient and reliable operation in your applications.
We offer detailed product documentation, including datasheets, manuals, and wiring diagrams, to assist you in understanding the specifications and proper usage of our solenoid valves. Additionally, our online resources include FAQs, application guides, and instructional videos.
For technical inquiries, our trained engineers are available to provide prompt assistance and solutions tailored to your specific requirements. We also offer training sessions and seminars to enhance your knowledge of pneumatic control systems and solenoid valve technologies.
SMC is committed to continuous product improvement and innovation, and we welcome your feedback and suggestions. Our goal is to support your success by delivering high-quality solenoid valves and exceptional customer service.
Packing and Shipping:
All SMC Solenoid Valves are carefully packaged to ensure maximum protection during transit. Each valve is securely placed in a custom-fitted box with protective padding to prevent any damage from shocks or vibrations. The packaging materials are chosen to be both durable and environmentally friendly.
For shipping, we use reliable carriers with tracking options to guarantee timely and safe delivery. Each shipment is handled with care, and customers receive detailed tracking information to monitor their order status. We also offer expedited shipping options for urgent requirements.
Before dispatch, every SMC Solenoid Valve undergoes a thorough quality inspection to ensure it meets all specifications and performance standards. Our packaging and shipping process is designed to maintain product integrity and customer satisfaction from our facility to your doorstep.
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