274-05981

Siemens' 274-05981 is a meticulously engineered control valve and actuator assembly designed for precision operation in fluid delivery systems. This assembly supports a nominal valve size of 2-1/2 inches, making it ideal for various industrial applications. With a flow coefficient of 63 Cv, this valve effectively manages flow rates according to the operational needs encountered.

Field-operated at a voltage rating of 24 Vac, the assembly can function within a variable range of -20% to +30%, ensuring flexibility in diverse electrical environments. It is built to endure ambient temperatures between -15°C and 50°C, suitable for a range of operating conditions. For specific applications, it can handle media temperatures from -25°C to 150°C, but precautions like stem heaters are necessary when operating below the freezing point.

The assembly's protective enclosure meets NEMA 1 standards, securing it against certain environmental influences. The valve body is constructed from durable cast iron, adherent to ANSI Class 125 ratings, thus ensuring reliable performance under pressure. Bronze is used for the valve's trim material, further enhancing its durability and efficiency.

As a 2-way normally open valve featuring equal percentage flow characteristics, it exhibits controlled flow mechanics and precise modulation capabilities. The actuator, an SKD62U electronic model, operates with a spring return feature, ensuring the valve closes safely when not in use. Power consumption for the assembly reaches 17 VA, handling control signals via 0-10 Volts DC or 4-20 mA inputs, allowing for straightforward integration into existing control systems.