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Nedox® is a nickel-based surface treatment widely used on valve components to enhance corrosion resistance, and wear resistance. It is commonly applied to valve stems, discs, gates, seats, and trim components where surface hardness, non-stick properties, and protection against chemical attack are required.

Properties

Properties

  • Excellent Wear & Abrasion Resistance – Provides surface hardness up to Rc 68 (800-1000 HV), improving resistance to sliding wear and galling.
  • Superior Corrosion Protection – Outperforms many conventional coatings by offering excellent resistance to saltwater, chemicals, and aggressive media.
  • Self-Lubricating Surface – Reduces friction and operating torque in dynamic valve components, eliminating the need for external lubricants.
  • Non-Stick Properties – Prevents build-up of deposits, scale, or contaminants, improving reliability and ease of maintenance.
  • Uniform Coating – Provides a dense, uniform surface even on complex geometries, such as valve stems and intricate trims.

Nedox® vs. Other Surface Treatments
• Harder and more corrosion-resistant than standard nickel plating.
• Lower friction coefficient than hard chrome, reducing galling on valve stems and seating surfaces.
• Less brittle than thermal spray coatings, offering more impact resistance.

Limitations

Limitations

  • Not as Hard as Carbide Coatings – For extreme abrasion, tungsten carbide or chromium carbide coatings may be preferred.
  • Temperature Limitations – Generally recommended for use in environments up to ~260°C (500°F).

Common Applications

Common Applications

Oil & Gas Valves – Protects against corrosive fluids and abrasive service in wellhead and subsea applications.
Chemical Processing Valves – Resists acidic and caustic environments in process control valves.
Water & Wastewater Valves – Used in gate, plug, and ball valves exposed to corrosive brine or chlorinated water.
Pharmaceutical & Food Valves – Provides cleanability and anti-stick performance in sanitary valve applications.
High-Cycle Valves – Ideal for control valves and automated valves requiring long service life and reduced wear.