Alloy 20 Plug Valve

For corrosive fluid isolation, Alloy 20 Plug Valve Manufacturers in Nigeria provide plug valve configurations using Alloy 20 for selected chemical and process services. The rotating plug controls the flow passage, allowing rapid quarter-turn isolation, while the alloy construction provides enhanced resistance to selected aggressive chemical media.

Alloy 20 (UNS N08020) contains chromium, nickel, molybdenum and copper, making it particularly suited to certain acid-handling applications, including selected sulfuric acid services.

Why Alloy 20 is Preferred

Alloy 20 is preferred in selected corrosive services due to its combined chromium, molybdenum and copper alloying, which improves resistance to localized corrosion and chemical attack. The molybdenum content contributes to resistance against pitting and crevice corrosion, while copper enhances resistance in selected sulfuric acid environments. Its niobium stabilization also helps reduce susceptibility to intergranular corrosion after welding.

This combination makes Alloy 20 suitable for specific acid-handling and chemical-processing duties where conventional stainless steels may provide insufficient corrosion resistance.

Alloy 20 Plug Valve Components

• Body: Contains the plug and forms the main pressure boundary.

• Plug: Rotates within the body to align or block the flow passage.

• Stem: Transfers rotational movement from the actuator to the plug.

• Seat/Sleeve: Provides the sealing interface around the plug.

• Packing: Limits external leakage around the stem.

• Gasket: Maintains pressure-tight sealing between body components

African Valve supplies Alloy 20 plug valve configurations for selected Nigerian chemical-processing, petrochemical, fertilizer and industrial applications, with the plug, body, seats and sealing materials selected according to the process medium, concentration, temperature and pressure.