PRS-3921 by Sanyo Denki

The PRS-3921 from Sanyo Denki is a high-precision pressure regulator in the PRS Servo Drive Boards lineup designed to meet rigorous industrial automation demands. Constructed with stainless steel body material, this regulator weighs 1.2 kg and features a compact footprint for panel or surface mounting. It accommodates a ¼" NPT female connection type and offers a robust maximum inlet pressure of 3000 psi. Certified CE Approved, it operates reliably across a wide operating temperature range of -40°C to 70°C.

The PRS-3921 delivers consistent performance with a flow capacity (Cv) of 0.12 and an outlet pressure range adjustable from 0 to 250 psi, ensuring precise control over fluid delivery. Its intelligent design incorporates Viton seals for superior chemical resistance and long-term durability. Equipped with a T-handle for intuitive manual adjustments, the regulator maintains exceptional stability under fluctuating supply pressures. The regulator’s integrated position feedback accuracy of ±0.1° enables exact monitoring of setpoint adjustments. With multi-mode operation capability—position, speed, and torque control modes—it interfaces seamlessly within advanced motion systems.

Engineered for demanding environments, the PRS-3921 features overload protection via robust sealing and high-pressure containment, reducing maintenance downtime. The panel or surface mount configuration simplifies installation in confined control cabinets, while its low overall weight supports streamlined machine design. Forced-air cooling from adjacent system fans ensures thermal management, safeguarding against overheating in continuous-duty cycles. The combination of precision feedback, chemical-resistant Viton seals, and compact sizing enhances system responsiveness and extends service life.

Integration is straightforward: the PRS-3921 mounts easily alongside other PRS series devices, communicating via standard interfaces such as RS-485 serial communication and TCP/IP Ethernet. Its small form factor and CE certification make it ideal for global deployment across packaging machines, robotic workcells, and test stands. Engineers can leverage its accurate ±0.1° position feedback and flexible mounting options to optimize panel layouts and automate critical pressure control processes.