Duplex Steel Gate Valve

Manufacturer, Supplier & Exporter of Duplex Steel Gate Valve

Riddhi Siddhi Impex is a trusted manufacturer and domestic supplier of Duplex Steel Gate Valves in India, offering high-performance and corrosion-resistant valve solutions for critical applications. Designed to meet stringent industrial standards, these valves provide exceptional strength and resistance to chloride stress corrosion, making them suitable for aggressive environments..

Our Duplex Steel Gate Valves are engineered using top-grade duplex stainless steels such as UNS S31803 and UNS S32205. These materials offer a unique combination of austenitic and ferritic microstructures, resulting in excellent mechanical properties and corrosion resistance. These valves are ideal for both onshore and offshore applications, particularly in industries like oil & gas, petrochemical, pulp & paper, and water treatment.

As a leading Duplex Steel Gate Valve Domastic supplier, Riddhi Siddhi Impex ensures availability in all major Indian cities including Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, and Surat. With a wide distribution network and reliable logistics, we ensure fast and timely delivery to customers across India.

Our Duplex Steel Gate Valves are available in various pressure ratings and sizes ranging from ½” to 24”, and end connections including flanged, butt weld, socket weld, and threaded types. The valves feature a rising stem and solid wedge design for reliable shutoff performance in high-pressure pipelines.

Each valve undergoes rigorous quality checks, hydrostatic testing, and non-destructive examinations as per API 598 and other international standards. This guarantees the durability, leak-proof operation, and longevity of our Duplex Steel Gate Valves even under extreme service conditions

Duplex Steel Gate Valve Specifications

Specifications	Details
Product Name	Duplex Steel Gate Valve
Size Range	1/2" to 24” (DN15 to DN600)
Pressure Class	150#, 300#, 600#, 900#
Material Grade	Duplex S31803, S32205
End Connection	Flanged, Butt Weld, Socket Weld, Threaded
Operation	Manual, Gear Operated, Actuated
Standards	API 600 / BS 1414 / ASME B16.34

Chemical Composition

Element	S31803 (%)	S32205 (%)
Carbon	0.030 max	0.030 max
Manganese	2.00 max	2.00 max
Silicon	1.00 max	1.00 max
Chromium	21.0 – 23.0	22.0 – 23.0
Nickel	4.5 – 6.5	5.0 – 6.5
Molybdenum	2.5 – 3.5	3.0 – 3.5
Nitrogen	0.08 – 0.20	0.14 – 0.20

Mechanical Properties

Property	Value
Tensile Strength	620 MPa min
Yield Strength (0.2% Offset)	450 MPa min
Elongation	25% min
Hardness	293 HB max

Dimension Chart (Sample)

Size (Inch)	Face-to-Face (mm)	Height (mm)	Weight (kg)
2"	178	325	14
4"	229	415	35
6"	394	545	68
8"	457	630	95

Equivalent Grades

Standard	Grade
UNS	S31803 / S32205
EN	1.4462
ASTM	A182 F51 / F60

Other Types of Duplex Steel Valves

Type	Description
Duplex Steel Ball Valve	Quarter-turn valve for on/off service
Duplex Steel Globe Valve	Linear motion valve for flow regulation
Duplex Steel Check Valve	Prevents reverse flow in pipelines
Duplex Steel Butterfly Valve	Lightweight, economical throttling valve
Duplex Steel Plug Valve	Rotational valve for quick shutoff

Riddhi Siddhi Impex stands out as a quality-centric Duplex Valve manufacturer in India, offering both standard and custom-built configurations. Our valves are also offered with accessories like handwheel, gear operator, pneumatic actuator, or electric motor, depending on your operational needs..

Frequently Asked Questions (FAQs)

Q1: What industries use Duplex Steel Gate Valves?

A1: They are used in oil & gas, petrochemical, water treatment, and marine applications.

Q2: What are the pressure ratings available?

A2: Available in 150#, 300#, 600#, and higher ratings upon request.

Q3: Is customization possible for Duplex Gate Valves?

A3: Yes, Riddhi Siddhi Impex offers customization in size, pressure class, and operation type.

Q4: Are these valves suitable for seawater applications?

A4: Yes, duplex steel's high corrosion resistance makes it ideal for seawater and brine service.