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Super Duplex Gate Valve

South American Valve is a leading Super Duplex Gate Valve Supplier in Guyana. Super duplex gate valves are commonly used in applications where resistance to corrosion and erosion is critical, as well as in high-pressure environments. They are suitable for handling various aggressive fluids, such as seawater, chemicals, acids, and hydrocarbons.


  • Body
  • Bonnet
  • Gate
  • Stem
  • Seats
  • Actuator or handwheel


  • High-pressure rating: Super duplex gate valves are designed to withstand high-pressure conditions, ensuring reliable operation even in demanding applications.
  • Corrosion resistance: The super duplex stainless steel construction provides excellent resistance to corrosion, even in harsh environments where standard materials may fail.
  • Bi-directional sealing: Gate valves are capable of sealing in both directions, preventing backflow of fluids.
  • Full bore design: Super duplex gate valves often have a full bore design, meaning the internal diameter of the valve matches the pipe’s diameter, minimizing pressure drop and maximizing flow capacity.
  • Metal-to-metal sealing: Gate valves typically use metal-to-metal sealing, providing a tight and reliable seal even in high-pressure applications.


  • Oil and gas industry: Super duplex gate valves are widely used in the oil and gas sector, both onshore and offshore. They are employed in exploration, production, refining, and distribution processes to control the flow of oil, gas, and various fluids. These valves can handle corrosive hydrocarbons, such as crude oil, natural gas, and refined products.
  • Petrochemical industry: In petrochemical plants, super duplex gate valves are utilized for handling aggressive chemicals, acids, and solvents. They play a vital role in controlling the flow of feedstock, intermediates, and end products in processes such as distillation, cracking, polymerization, and chemical reactions.
  • Chemical industry: Super duplex gate valves find applications in chemical plants where corrosive liquids and gases are involved. They are used for regulating the flow of acids, alkalis, solvents, and other aggressive chemicals used in various chemical processes.
  • Offshore and marine applications: Due to their excellent corrosion resistance and durability, super duplex gate valves are commonly employed in offshore drilling rigs, production platforms, and marine vessels. They can withstand the harsh conditions of saltwater environments, making them suitable for seawater treatment, offshore oil and gas production, and shipbuilding.
  • Desalination plants: Desalination processes involve handling corrosive seawater and brine solutions. Super duplex gate valves are used in desalination plants to control the flow of seawater, brine, and other fluids during the desalination process.
  • Power generation: Super duplex gate valves are utilized in power plants, including thermal power plants and nuclear power plants. They regulate the flow of water, steam, and other fluids in cooling systems, boiler feedwater systems, and other critical processes.
  • Mining industry: In mining operations, super duplex gate valves are employed in handling corrosive slurries, tailings, and process water. They help control the flow of various liquids and maintain operational efficiency in mineral extraction, processing, and waste management.


  • Body: Super Duplex 5A Stainless Steel, F51, F53, Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel,
  • WC6, WC9,C5, C12, LCB, CF3M
  • Bonnet, Gate: Super Duplex Stainless Steel, Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel, WC6,
  • WC9, ?C5, C12, LCB, CF3M
  • Trim: SS304, SS316, SS304L, SS316L, 13%Cr.Steel, Stellite, Hastelloy, Alloy 20, Duplex Stainless Steel, Super
  • Duplex Stainless Steel
  • Gland Packing: Graphite, PTFE
  • Nominal Size: DN15 to DN500
  • Nominal Pressure: PN 1.0 to 25 Mpa, Class 150 to 2500
  • End Connections: Flanged, Socketweld, Buttweld
  • Operations: Handwheel Operated, Electric Actuated, Pneumatic Actuated