Duplex Steel Gate Valve

Hanno Valve Duplex Steel Gate Valve is produced by a China valve manufacturer and supplier with 25+ years of industrial valve manufacturing experience. This Duplex Steel Gate Valve is manufactured in a professional valve factory using duplex stainless steel materials including ASTM A890 Gr 4A (2205), Gr 5A (2507), and Gr 6A (3380), providing corrosion-resistant solutions for offshore, seawater, sour gas, chemical, and other demanding industrial applications.

Material Options

Duplex stainless steel is selected for applications requiring corrosion resistance and higher mechanical performance. Hanno Valve manufactures Duplex Steel Gate Valve products using the following material grades:

Different duplex stainless steel grades can be selected according to the operating environment and application requirements.

Main Features

Duplex Stainless Steel Construction

The valve uses duplex stainless steel materials for pressure-retaining parts. The duplex structure combines austenitic and ferritic phases, helping improve corrosion resistance and mechanical strength.

Resistance to Chloride Corrosion

Duplex and super duplex stainless steel materials provide resistance to chloride-related corrosion issues, making them suitable for seawater and high-chloride industrial environments.

Suitable for Sour Gas Applications

The Duplex Steel Gate Valve can be used in sour gas service applications where resistance to corrosion and stress corrosion cracking is required.

Reliable Pipeline Isolation

As a wedge gate valve, it is designed for pipeline shut-off applications where full isolation is required.

Flexible Operation Options

Hanno Valve provides different operation methods according to customer requirements, including:

Handwheel operation

Gearbox operation

Automated actuator operation

Technical Specifications

Applications

Due to the corrosion-resistant characteristics of duplex stainless steel materials, Duplex Steel Gate Valve is commonly used in industries with demanding operating environments.

Offshore Oil and Gas

Used in offshore applications where equipment may face seawater exposure, chloride environments, and corrosive media.

Seawater Systems

Suitable for seawater-related applications requiring corrosion-resistant valve materials.

Sour Gas Systems

Applied in sour gas services where material resistance is important for long-term operation.

Chemical Processing

Used in chemical processes involving acidic or high-chloride media.

Oil and Gas Industry

Suitable for crude oil and industrial pipeline isolation applications.

Duplex Stainless Steel vs. Conventional Stainless Steel

Duplex stainless steel and conventional stainless steel have different performance characteristics. Duplex materials are selected for applications where higher strength and improved resistance to chloride-related corrosion are required.

Why Choose Hanno Valve Duplex Steel Gate Valve?

25+ Years Valve Manufacturing Experience

Hengnuo Valve has more than 25 years of experience in industrial valve manufacturing, providing professional valve production capabilities.

Integrated Foundry Production

With its own foundry and precoated sand casting technology, Hengnuo Valve manages casting production internally to support stable manufacturing processes.

Professional Production Team

The company has more than 150 employees, including experienced technicians who support valve manufacturing and quality control processes.

Customized Valve Solutions

Hanno Valve provides Duplex Steel Gate Valve solutions with different material grades and operation methods according to customer application requirements.

FAQ

What is a Duplex Steel Gate Valve?

A Duplex Steel Gate Valve is a wedge gate valve manufactured using duplex stainless steel materials. It is designed for industrial applications requiring corrosion resistance and mechanical strength.

What materials are available for Duplex Steel Gate Valve?

The main materials include ASTM A890 Gr 4A (2205), Gr 5A (2507), and Gr 6A (3380).

Why choose duplex stainless steel for gate valves?

Duplex stainless steel combines austenitic and ferritic structures, providing corrosion resistance and mechanical properties suitable for demanding industrial environments.

Where can Duplex Steel Gate Valve be used?

It can be applied in offshore, seawater, sour gas, chemical, and oil and gas-related industries.

Can Duplex Steel Gate Valve use automated operation?

Yes. Hanno Valve can provide handwheel, gearbox, and automated actuator operation options according to customer requirements.

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