Middleeast valve is the prime Duplex steel valve supplier in Saudi Arabia. We supply to cities like  Ras Al Khaimah, Kalba, Jebel Ali, and Ruwais.

Duplex steel valves are a crucial component in various industrial applications, providing robust performance and reliability in demanding environments.

Composition and Structure:

Duplex steel valves are typically composed of a two-phase microstructure, consisting of both austenitic (face-centered cubic) and ferritic (body-centered cubic) phases. The most common duplex stainless steel grades used for valve manufacturing are duplex 2205 (UNS S31803/S32205) and super duplex 2507 (UNS S32750). These alloys contain a balanced combination of chromium, nickel, molybdenum, and nitrogen, which contributes to their exceptional corrosion resistance and mechanical properties.

The duplex structure imparts several advantages to these valves. The austenitic phase provides high corrosion resistance, while the ferritic phase contributes to increased strength and toughness. This unique combination allows duplex steel valves to withstand aggressive environments, such as those containing corrosive chemicals, seawater, and acidic solutions.

Corrosion Resistance:

One of the primary reasons for the widespread use of duplex steel valves is their outstanding corrosion resistance. Duplex stainless steels exhibit superior resistance to both uniform corrosion and localized corrosion, such as pitting and crevice corrosion. This makes them suitable for applications in harsh and corrosive environments, where conventional materials might fail over time.

Duplex steel valves are particularly effective in resisting corrosion caused by chlorides, which are commonly found in seawater and chemical processing plants. The high chromium and molybdenum content in duplex alloys enhance their resistance to chloride-induced corrosion, ensuring long-term performance and durability.

High Strength and Toughness:

Duplex stainless steels possess higher strength compared to conventional austenitic stainless steels. This increased strength allows for the design and manufacturing of lighter and more compact valves without compromising performance. Additionally, duplex steel valves exhibit excellent toughness, even at low temperatures, making them suitable for cryogenic applications.

The combination of high strength and toughness makes duplex steel valves resilient in challenging operational conditions, where they may be subjected to pressure variations, mechanical stresses, and temperature extremes.

Weldability and Fabrication:

Weldability is a crucial factor in the fabrication of valves, and duplex stainless steels excel in this regard. These materials are readily weldable using common welding processes, such as gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW). However, it is essential to follow proper welding procedures to maintain the corrosion resistance and mechanical properties of duplex steel valves.

The ability to weld duplex steel valves efficiently facilitates the fabrication of complex valve designs, ensuring the integrity of welded joints and reducing the overall production costs.

Suppliers of Duplex Steel Valve in Saudi Arabia offer exceptionally durable and corrosion-resistant products, ideal for use in challenging environments characterized by exposure to harsh chemicals and high-pressure conditions.

Description:

Body Material: Duplex Steel (F51, F53, 4A. 5A), ASTM A995,A890

Class: 150 to 2500.

Pressure: PN25 to PN450.

Size: ½’’ to 24’’.

Operations: Lever operated, Handwheel operated, Pneumatic actuated, Electric actuated.

Types of Duplex Steel Valves:

Duplex Ball Valves

Duplex Gate Valves

Duplex Globe Valves

Duplex Check Valves

Advantages of duplex steel valve:

Good weldability

Large thermal conductivity

Good corrosion resistance

Better mechanical properties

High durability

Industries of duplex steel valve:

Oil and Gas

Petrochemical

Chemical

Power Generation

Marine and Offshore

Mining

Water and Wastewater Treatment

Visit us: https://www.middleeastvalve.com/product-category/duplex-valve/