"> NK NWK-HF350
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NWK-HF350

NK NWK-HF350 — High Expansion Foam Generator - Marine.

Components & Design

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Technical Data

Foam Output Capacity 16 m³/min
Operating Pressure 4 bar
Type Proportioning foam generator
Foam Insertion Range 1% to 3%

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Common failures & inspection points

Foam Concentrate Deterioration and Contamination

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

Foam Generator Pressure and Flow Rate Performance

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)

System Piping and Component Integrity

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

Foam Expansion Ratio and Quality Verification

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

SOLAS Compliance and Certification Documentation

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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Equipment Model #148779 · ✓ still in production