Why does the differential pressure keep increasing?

by Sarah Loeffler | May 19, 2026 | 0 comments

Why does the differential pressure keep increasing?

Increasing differential pressure usually indicates filter loading, restrictions in the system, or changes in flow demand and operating conditions.

A continuously increasing differential pressure means the resistance across the monitored component is rising.

Possible causes:

A filter element is loading with particles, oil aerosol, or other contamination.
A blockage or restriction is developing in the purification or piping system.
Flow demand has increased, which naturally raises differential pressure at the same component.
Pressure take-off points or impulse lines are partially blocked, creating false readings.
The differential pressure transmitter requires verification or maintenance.

Technically correct checks:

Compare the actual value with the normal clean-filter baseline at the same flow condition.
Inspect and replace filter elements if the pressure drop exceeds the maintenance limit.
Check for restrictions, valve position changes, or abnormal consumption downstream.
Inspect the pressure connections and impulse lines for blockage or condensate.
Verify the transmitter reading with a reference if the trend does not match process behavior.

Tag: compressed air

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