Which type of valve typically requires a higher degree of filtration?

Proportional valves are designed to modulate flow and pressure based on input signals, resulting in precise control of fluid dynamics in a system. This level of precision necessitates a higher degree of filtration because contaminants can interfere with the valve's performance, leading to erratic operations or even failure. Since proportional valves are often used in applications that require accuracy, any particulate matter can cause fluctuations or inaccuracies in the control process.

In contrast, other types of valves like ball valves and gate valves often have larger flow passages that can tolerate higher levels of contamination without significantly affecting their operation. Screw-in cartridge valves, while they do require some level of cleanliness, typically don’t demand the same stringent filtration standards as proportional valves. Thus, due to their operational requirements and the critical nature of their applications, proportional valves call for a more sophisticated filtration system to ensure reliable performance.