Duplex Filter F725
SAB Georg Schünemann GmbH Duplex Filter F725 — Multi-purpose welded duplex filter for liquid media including fuel and fuel oil. Designed for high volume flows at elevated pressures with continuous operation during cleaning. Used in marine and industrial fuel oil systems..
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Check and clean or replace strainer insert (basket or ring-type strainer) at defined differential pressure or time intervals
Inspect and test the duplex changeover valve (two-way valve / ball valve) for smooth, leak-free switching between filter chambers
Verify differential pressure indicator readings and calibrate or replace sensor/indicator as required
Inspect filter housing, covers, and sealing surfaces for corrosion, erosion, or damage; replace O-rings and gaskets
Check optional magnetic insert for accumulated ferrous particles; clean or replace as needed
Inspect sacrificial anode (if fitted) and replace when consumption exceeds 50% to ensure cathodic protection of housing
For automatic self-cleaning filters: verify correct function of pneumatic or electric drive unit, flush valve, and backwash cycle initiation (differential pressure trigger and/or timer)
Flush filter housing and drain accumulated sludge/sediment from drain valve after each cleaning or at scheduled intervals
Type-general inspection and maintenance points for this equipment category — not model-specific.
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