What Causes High Pressure Drop in Liquid Filtration?
Pressure drop is one of the most important operating signals in liquid filtration. A rising pressure drop can indicate normal filter loading, undersized equipment or a mismatch between media and process conditions.
Selection Guidance
When this matters
As a filter captures particles, open area decreases and pressure drop rises. This is normal, but the rate of increase should match expected dirt loading and service interval. A filter that blocks too quickly may be too fine or too small for the process.
What to compare
High viscosity liquids, low temperature operation and high solids concentration can all increase pressure drop. In these cases, a larger housing, different media or staged filtration may be needed.
Common mistakes to avoid
Installation factors also matter. Undersized piping, sharp flow changes, blocked valves or insufficient venting can make a filter system appear to perform poorly even when the media is suitable.
Information to prepare
Track clean pressure drop, changeout pressure, runtime and solids condition. These values help identify whether the issue is filter selection, system design or process variation.
Need application-specific support?
Send your operating conditions to ASTERFIL for a practical filtration direction.