Product Description:
The SMC AR425 to AR935 series features an internally pilot-operated, relieving-type air pressure regulator. Within this range, the AR825, AR835, AR925, and AR935 sub-series belong to the large-bore category, offering port sizes from 1-1/4" up to 2". These regulators are specifically designed for use in central compressor stations, high-flow mains, and multi-station centralized air supply systems.
The pilot-operated mechanism utilizes the supply air itself to control the main valve, resulting in significantly improved outlet stability. This design offers a lower pressure drop at high flow rates and ensures minimal outlet pressure fluctuation even when the inlet pressure varies. These advantages make it superior to direct-acting regulators in maintaining consistent performance.
This product range includes 14 part numbers, covering 1-1/4" and 1-1/2" AR825/AR835 models (some equipped with gauges, denoted as G versions), 2" AR925/AR935 models (also including G versions), and 2" X218 semi-standard special configurations.
The series is divided into high-pressure types (25: AR825/AR925), which offer an adjustable pressure range from 0.05 to 0.83 MPa, and low-pressure precision types (35: AR835/AR935), adjustable from 0.02 to 0.2 MPa. This range suitably covers both general pneumatic system requirements and low-pressure precision applications such as electronics manufacturing, coating processes, and laboratory air supply.
Features:
The product offers large bore ports measuring 1-1/4", 1-1/2", and 2", suitable for mains and multi-drop centralized supply systems. These port sizes ensure efficient flow and compatibility with various installation requirements.
Featuring an internal pilot relieving mechanism, the device automatically releases any excess outlet pressure to the atmosphere. This design helps maintain stable pressure levels and enhances operational safety.
Two distinct pressure ranges are available to accommodate different precision needs: a high-pressure range from 0.05 to 0.83 MPa, and a low-precision range from 0.02 to 0.2 MPa. This flexibility enables users to select the appropriate setting for their specific applications.
The body is constructed from die-cast aluminum, providing durability and a lightweight design. The units weigh approximately 2.5 kg for the AR825 and AR835 models, and about 4.5 kg for the AR925 and AR935 models, making them rugged enough for plant use.
Models with the G suffix come equipped with a panel-mounted pressure gauge from the G46 series. This feature allows for easy and clear local pressure readings, enhancing user convenience and monitoring accuracy.
The X218 suffix denotes an SMC semi-standard special configuration. Customers are advised to consult with the sales team to confirm the exact specifications and ensure the product meets their requirements.
A locking screw on the adjusting handle prevents accidental tampering after the pressure has been set, ensuring consistent performance and reliability over time.
Thread options such as Rc (PTF), NPT (F), and G threads are available upon request, offering versatility in installation to match different piping standards.
Technical Parameters:
| Ambient / Fluid Temperature |
-5 To 60°C |
| Pressure Gauge Port |
1/4" |
| Body Material |
Die-cast Aluminum |
| Proof Pressure |
1.5 MPa |
| Max. Operating Pressure |
1.0 MPa |
| Fluid |
Air |
Applications:
Centralized Compressor Stations and Pressure Regulation
Central compressor stations play a crucial role in managing the generation and distribution of compressed air. These facilities help to regulate the pressure along the main air lines, ensuring consistent and reliable airflow throughout the system.
High-Flow Air Mains and Plant-Wide Air Supply
High-capacity compressed air mains are essential for delivering large volumes of air efficiently. By implementing a centralized air supply across the entire plant, operations benefit from improved energy efficiency and streamlined maintenance.
Automated Multi-Station Assembly and Packaging Lines
Automated assembly lines, which often include multiple stations, integrate packaging and conveying processes. These systems utilize compressed air to enhance precision and speed, increasing overall productivity in manufacturing environments.
Pneumatic Manipulators and Gripper Systems
Pneumatic technology is commonly used in manipulators featuring large bore cylinders and clusters of pneumatic grippers. These components provide reliable, powerful motion control for handling and positioning tasks in various industrial applications.
Spray Booths and High-Volume Air Applications
In processes such as spray coating and air blow-off, high-volume compressed air is critical. Spray booths rely on this airflow to ensure an even finish, while other process air points use it to maintain cleanliness and quality control.
Heavy Industry Sectors
Industries including mining, metallurgy, cement production, and power generation heavily depend on robust compressed air systems. These demanding environments require durable solutions to support their critical operations.
OEM Machinery in Various Manufacturing Fields
Original Equipment Manufacturer (OEM) machines used in textile, printing, paper, and packaging sectors often incorporate pneumatic elements. These components enhance machine performance and reliability, contributing to efficient production workflows.
Support and Services:
SMC provides comprehensive technical support and services for all SMC Solenoid Valves to ensure optimal performance and customer satisfaction. Our expert team offers assistance in product selection, installation guidance, troubleshooting, and maintenance procedures. We also provide detailed product documentation, including datasheets, operation manuals, and CAD drawings to help you integrate our solenoid valves seamlessly into your systems.
For any technical inquiries, our support specialists are available to help you resolve issues quickly and efficiently. We offer training sessions and webinars to keep you updated on the latest technologies and best practices in pneumatic control solutions. Additionally, SMC’s global network ensures that replacement parts and repair services are readily accessible to minimize downtime.
Whether you need advice on custom configurations or assistance with system design, SMC is committed to delivering reliable support and services tailored to your specific application requirements.
Packing and Shipping:
All SMC Solenoid Valves are carefully packaged to ensure they arrive in perfect condition. Each valve is securely placed in protective packaging materials to prevent damage during transit. The packaging is designed to safeguard the product from moisture, dust, and impact.
For shipping, we use reliable carriers with tracking options to guarantee timely and safe delivery. Depending on the order size and destination, the valves may be shipped individually or in bulk cartons. Customers will receive a shipment confirmation along with tracking details once the order has been dispatched.
We recommend inspecting the packaging upon receipt and reporting any damage immediately to ensure prompt resolution. Our packaging and shipping process is tailored to maintain the quality and functionality of SMC Solenoid Valves from our warehouse to your facility.
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