NWK-HF350
NK NWK-HF350 — High Expansion Foam Generator - Marine.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Annual visual inspection of foam concentrate in storage tanks for excessive sludging, discoloration, or crystallization; laboratory quality testing of foam samples for viscosity, surface tension, and emulsion stability per ISO/IEC standards
Annual functional test of foam proportioning generators at rated operating pressure (4 bar); measure actual foam output capacity (m³/min) against nameplate specifications; verify proportioning ratio accuracy (1-3% injection)
Visual inspection of all piping, connections, and nozzles for corrosion, scaling, or blockage; pressure testing at 1.5x operating pressure; verify water connections (100A/150A) are clear and functional
Test foam expansion ratio (target 1:670 for NK.D-101M, 960+ for system discharge) using standardized test nozzles; measure drainage time and foam stability per EN 1568-3 or equivalent maritime standards
Verify MED (Marine Equipment Directive) B+D and IMO Rules certifications are current; confirm PFAS restrictions compliance (PFOS <10 mg/kg effective from 1 January 2026); review maintenance log and maker's declarations for approved foam batch numbers
Type-general inspection and maintenance points for this equipment category — not model-specific.
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