Diesel Contamination
Diesel fuel contains water from condensation and storage, particulates from handling and tanks, biological growth in stored fuel, rust and scale from tanks and piping, and wax crystals in cold conditions. Contamination damages injection systems and reduces engine performance.

Filter Configuration
Vertical or horizontal pressure vessel with diesel inlet, coarse strainer stage removing large debris, water separator section coalescing and settling free water, fine filter stage capturing particles to 2-10 microns, clean fuel outlet to engines.

Water Separation
Water in diesel causes injector corrosion, microbial growth, and combustion problems. Coalescing elements agglomerate water droplets for gravity separation. Water collection sump with high-level sensor and drain removes accumulated water.

Particulate Filtration
Filter elements rated 2-10 microns absolute remove dirt, rust, biological material, and solid contaminants. Protects high-pressure common rail injectors requiring ultra-clean fuel. Typical efficiency 95-99% at rating.

Operating Pressure
Design pressure 50-150 psig matching fuel transfer and supply pumps. Clean filter differential pressure 2-5 psi. Element replacement required at 15-25 psi preventing fuel starvation.

Material Selection
Carbon steel or aluminum for diesel fuel service. Stainless steel for marine applications resisting corrosion. Filter housings materials compatible with diesel and biodiesel blends. Gaskets resist fuel chemistry.

Element Technology
Pleated cellulose or synthetic media maximizing surface area. Depth filtration captures particles throughout media thickness. Water-blocking elements prevent water passage to engines. Elements disposable for convenience.

Applications
Diesel generator fuel conditioning, marine engine fuel polishing, truck and equipment fuel filtration, industrial diesel storage tank protection, biodiesel fuel treatment, and any diesel application requiring contamination removal.

Cold Weather Operation
Wax crystals form in diesel below cloud point plugging filters. Fuel heating prevents wax formation. Some filters include heated housings. Cold flow improvers added to fuel reduce gelling.

Biological Growth
Microbial contamination grows at water-fuel interface forming slime plugging filters. Biocide treatment kills microbes. Filtration removes biological material. Water removal eliminates growth environment.

Differential Pressure
DP monitoring indicates filter loading. Gauges provide visual indication. Transmitters enable remote monitoring and automated alarms. High DP signals element replacement before fuel flow restriction.

Fuel Polishing
Recirculation through filtration during storage periods removes accumulated contaminants. Maintains fuel quality in long-term storage. Prevents fuel degradation and injection system problems.

Biodiesel Compatibility
B20 and lower blends compatible with standard filters. Higher blends may require specialty elements and more frequent changes. Biodiesel's solvent properties clean tanks releasing accumulated contamination.

Performance Benefits
Protects expensive injection systems from abrasive wear and corrosion. Prevents engine downtime from fuel quality issues. Extends component life through contamination control. Ensures reliable diesel engine operation.

Construction Standards
Pressure vessels per ASME Section VIII where applicable. Filter elements per ISO 4406 cleanliness codes. Materials for diesel fuel service. Complete documentation with filtration efficiency certification.

ERGIL diesel filters provide comprehensive fuel purification removing water and particulates protecting engines and ensuring reliable diesel equipment operation.