Spool valves are versatile and efficient components that play a crucial role in various pneumatic systems and machinery. These components can be actuated by either electric solenoids or pneumatic pressure, providing flexibility that accommodates a diverse range of port sizes and NAMUR interfaces designed for different applications. A variety of configurations are available, including the 3/2 function. This specific configuration is particularly well-suited for the effective operation of spring-return single-acting actuators, allowing for reliable and precise control. Additionally, the 5/2 function is another configuration that offers optimal control and performance for double-acting actuators, making it a preferred choice in many industrial settings. By utilizing these spool valves, engineers and operators can achieve enhanced efficiency and adaptability in their systems, ensuring that they meet the varying demands of different mechanical tasks.