904L National Standard Flange Gate Valve

904L National Standard Flange Gate Valve
  • Extreme Corrosion Resistance: Specifically designed with 904L (N08904) Stainless Steel to withstand highly corrosive media such as dilute sulfuric acid, phosphoric acid, and seawater.
  • National Standard Precision: Manufactured in strict accordance with GB/T standards, ensuring dimensional accuracy and seamless integration into high-specification pipelines.
  • Superior Pitting Protection: The high nickel and molybdenum content provides excellent resistance to pitting and crevice corrosion in chloride-rich environments.
  • High-Integrity Flanged Seal: Features a robust flanged connection for secure, leak-proof performance in chemical processing and pharmaceutical applications.
  • Full-Port Design: The full-bore internal structure minimizes fluid friction and pressure drop, maximizing the efficiency of your pumping systems.

Material Performance Comparison

Feature316L Stainless Steel904L Super-Austenitic
Acid ResistanceModerateExcellent (Sulfuric/Phosphoric)
Pitting ResistanceStandardHigh (Pre 35+)
Typical UseGeneral ChemicalExtreme Corrosion / Seawater

Applications

  • Chemical Processing: Production of sulfuric and acetic acids.
  • Marine Engineering: Desalination plants and seawater cooling systems.
  • Pulp & Paper: Bleaching and processing equipment.