Category: Black or galvanized cast iron fitting

Black or Galvanized Coating – BSP Threaded Fittings

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  • Forme: Coude 45°
  • Fluide admissible: Eau
  • Normes et certifications: Filetage ISO 7-1

Black or galvanized cast iron fitting

Black or Galvanized Cast Iron Fittings

THERSANE offers a wide range of malleable cast iron fittings. Discover the complete range from 1/8’’ to 4’’ for use in hot and cold water systems, fire protection networks, sprinkler systems, irrigation, heating, air conditioning, hydrocarbons, and compressed air.

For steam networks, the maximum pressure is 10 bar.
The finish is available in black or hot-dip galvanized.
The galvanized series makes your installation compatible with potable water.
The operating temperature ranges from -20°C to +300°C.
The admissible pressure should be verified through the technical data sheet available on the selected product page.

WARNING: This product is not authorized for use with natural gas or butane/propane applications.

What is the difference between black cast iron fittings and galvanized cast iron fittings?

Black Cast Iron Fittings

Black Cast Iron Characteristics

  • Made of malleable cast iron without any special coating.
  • Black color due to an oxide film formed during manufacturing.
  • More susceptible to corrosion, not suitable for humid environments.

Advantages of Black Cast Iron

  • Resistant to heat and high temperatures from -20°C to +300°C.
  • Excellent mechanical strength for indoor or protected applications.
  • Less expensive than galvanized cast iron fittings.

Applications of Black Cast Iron

  • Steam heating systems.
  • Environments where corrosion is not a major concern.
  • Hydrocarbons.
  • Air conditioning.
  • Compressed air.

Galvanized Cast Iron Fittings

Galvanized Cast Iron Characteristics

  • Coated with a layer of zinc through galvanization to reduce oxidation.
  • Silver or matte gray appearance due to the coating.
  • Resistant to corrosion, making them suitable for humid environments.

Advantages of Galvanized Cast Iron

  • Resistant to heat and high temperatures from -20°C to +300°C.
  • Excellent mechanical strength.
  • Enhanced protection against rust and oxidation.

Applications of Galvanized Cast Iron

  • All applications of black cast iron fittings
  • Potable water distribution.
  • Hydraulic heating and cooling systems.
  • Networks in outdoor or humid environments.

What does "malleable" mean when referring to malleable cast iron fittings?

When discussing malleable cast iron fittings, the term "malleable" refers to a specific type of cast iron that has been treated to improve its mechanical properties, particularly its resistance to breakage.

Malleable cast iron is obtained through an annealing process (prolonged heating) applied to white cast iron. This heat treatment modifies the internal structure of the material, transforming the carbon and enhancing both the strength and ductility of the metal.