Product Overview
The SMC AR20-02BM-1-B 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 diaphragm-actuated, spring-balanced regulating principle: an adjusting knob compresses a control spring, which acts against a rolling diaphragm to position the internal valve poppet and maintain the set outlet pressure regardless of fluctuations in inlet pressure or flow demand. The AR20-02BM-1-B is configured with a 1/4″ port size, a panel-mount style body, and a pressure gauge port, making it a direct-fit solution for OEM and MRO pneumatic circuits. Its relieving-type design allows excess downstream pressure to vent, protecting sensitive actuators, air tools, and instrumentation across industrial automation, packaging, and process control systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Pressure Regulator (Process & Pneumatic Valve) |
| Model Designation | AR20-02BM-1-B |
| Series / Body Size | SMC AR20 Series (1/8 to 1/4 port class) |
| Port Size & Thread | 02 = 1/4″ Rc (PT) threaded ports |
| Mounting Style | B = Panel / bracket mount configuration |
| Operating Pressure | Standard Industrial Grade (up to 1.0 MPa max supply) |
| Regulating Range | 0.05 to 0.85 MPa (standard AR20 spring range) |
| Pressure Gauge | 1 = Integrated gauge port / gauge option |
| Mounting & Connection | Standard ISO / Manufacturer Interface |
| Media | Compressed air (filtered, non-lubricated or lubricated) |
Engineering Features & Advantages
- Precision Performance: Diaphragm-actuated, relieving-type regulation delivers stable outlet pressure with minimal droop, ensuring consistent actuator force and repeatable process results.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust body and wear-resistant internal valve assembly suited to high-cycle pneumatic duty.
- Direct Fit Replacement: Precision-manufactured to original SMC specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
Its relieving-type design allows excess downstream pressure to vent, protecting sensitive actuators, air tools, and instrumentation across industrial automation, packaging, and process control systems.
PRODUCT IMAGES




SMC AR20-02BM-1-B 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 AR20-02BM-1-B Pneumatic Pressure Regulator. This Japan-made 1/4 inch pneumatic component features a diaphragm-operated design, delivering leak-free, reliable pressure control for heavy-duty industrial systems.