Product Overview
The SMC AR40-03BG-B-X425 is a precision pneumatic pressure regulator from the SMC AR series, engineered to deliver stable, repeatable downstream pressure control in compressed air systems. As a process and pneumatic valve component, it operates on a balanced poppet and diaphragm working principle: an adjusting knob compresses a control spring, which acts against a diaphragm to position the internal valve element, thereby regulating outlet pressure proportionally to the set point. The regulator features a built-in pressure gauge and a locking adjustment mechanism, making it suitable for panel or inline installation in industrial pneumatic circuits where consistent actuator force, tool performance, and process repeatability are critical. Its modular design allows integration with SMC’s AR-series filter-regulator and lubricator combinations for complete air preparation stations.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Process & Pneumatic Valve — Pressure Regulator |
| Model Designation | AR40-03BG-B-X425 |
| Series / Body Size | SMC AR40 Series (Body Size 40) |
| Port Size | 03 (3/8 inch) |
| Thread Type | G (ISO 228-1 Parallel Thread) |
| Operating Pressure | Standard Industrial Grade (Up to rated bar) |
| Mounting & Connection | Standard ISO / Manufacturer Interface |
Engineering Features & Advantages
- Precision Performance: Balanced poppet and diaphragm mechanism delivers accurate, repeatable outlet pressure regulation with minimal droop across varying flow demands.
- Integrated Pressure Gauge: Built-in gauge provides continuous visual monitoring of set pressure, eliminating the need for separate instrumentation.
- Locking Adjustment Knob: Prevents accidental set-point drift caused by vibration or unauthorized tampering in demanding industrial environments.
- Industrial Reliability: Built for continuous operation under severe industrial conditions with robust body construction and durable sealing materials.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards for drop-in service and minimal downtime.
Typical Industrial Applications
This SMC pneumatic pressure regulator is widely deployed in plastic injection molding machines for consistent mold clamping and ejection air pressure, CNC machine tools and automated assembly lines for precise actuator and gripper control, packaging and material handling systems requiring stable air supply to cylinders and blow-off stations, and general factory automation air preparation panels where reliable downstream pressure regulation protects pneumatic tools and instrumentation.
PRODUCT IMAGES
SMC AR40-03BG-B-X425 Pneumatic Pressure Regulator
âš¡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine SMC AR40-03BG-B-X425 Pneumatic Pressure Regulator. This Japan-made 0.05-0.85 MPa pneumatic component features a relieving pressure regulation design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.