Pressure line filtration uses what type of filter?

• A. High-pressure
• B. Vacuum
• C. Low-pressure (correct)
• D. Medium-pressure

Answer: (C)

In hydraulic systems the filter you choose is tied to where the fluid is in the circuit and the pressure it will face in that spot. Pressure line filtration, in the context of this question, is positioned in a part of the loop that operates at relatively lower pressure compared to the pump’s discharge. Using a low-pressure filter here makes sense because you’re cleaning the fluid before it enters the more demanding parts of the system, without exposing the filter to the full high pressure of the main pressure line. It keeps debris out while keeping costs and filter stress reasonable. High-pressure filters are reserved for parts of the circuit that actually see the maximum system pressure, while vacuum and a separate “medium-pressure” option aren’t the appropriate fit for this location.