Product Overview

The ARCA Regler 812-201-M DN50​ is a high-performance pneumatic control valve, specifically a globe valve, designed for precise regulation of flow, pressure, temperature, or level in industrial process control systems. ARCA Regler, a specialist in control valve technology, designs the 812 series for demanding applications requiring reliability, tight shut-off, and accurate modulation. The 812-201-M DN50​ model denotes a specific configuration: it is a globe valve with a characterized plug and seat, sized for DN50 (2-inch) piping, and equipped with a pneumatic diaphragm actuator. The “M” in the model number typically indicates a specific actuator size or spring range. This control valve functions as the final control element in an automation loop, receiving a 3-15 psi (0.2-1.0 bar) or 4-20 mA signal (via an attached positioner) from a controller and translating it into a precise stem position to modulate the flow of process media—be it steam, water, chemicals, oil, or gas.The design of the ARCA 812-201-M​ is centered on providing stable, repeatable control. The globe valve body features a characterized plug (e.g., equal percentage, linear) that, together with the specific cage or seat design, creates a predictable flow characteristic to match the process requirements. The pneumatic diaphragm actuator provides the motive force to move the valve stem against the static and dynamic forces of the process. It is a spring-return (fail-safe) design, meaning the valve will move to a predefined safe position (fully open or closed) in the event of air supply failure, a critical safety feature. The ARCA Regler 812-201-M DN50​ is engineered for durability, with body materials typically available in cast steel, stainless steel, or other alloys to handle a wide range of pressures, temperatures, and corrosive or erosive media. Its value lies in its ability to translate a control system’s command into precise physical action, maintaining setpoints, optimizing process efficiency, and ensuring safety in continuous processes across various heavy industries.

Technical Specifications