Duplex Steel Valves
Duplex Steel Valves
Precision-engineered Duplex Steel Valves engineered for reliable flow isolation, regulation and control in industrial piping systems.
- Ball Valves
- Gate Valves
- Globe Valves
- Check Valves
- Needle Valves
- Butterfly Valves
Duplex Steel Valves Manufacturer in India
Sawariya Metal Industries is a manufacturer, supplier, stockist and exporter of Duplex Steel Valves in different sizes, grades, specifications and finishes for industrial and engineering applications.
Duplex Steel Valves are flow-control devices used to start, stop, regulate or prevent backflow of liquids and gases in process and utility piping.
Duplex stainless steel has a two-phase austenitic-ferritic structure that delivers higher strength than standard austenitic grades together with good resistance to pitting, crevice corrosion and chloride stress corrosion cracking.
Typical applications for Duplex Steel Valves include oil & gas, chemical processing, petrochemical, desalination, marine applications, pulp & paper, heat exchangers, pressure vessels and general engineering.
Key Features of Duplex Steel Valves
High Strength
Higher yield strength than conventional 300-series stainless steels.
Corrosion Resistance
Good resistance to pitting, crevice and general corrosion.
SCC Resistance
Improved resistance to chloride stress corrosion cracking.
Cost Efficient
Strength and durability help reduce material and lifecycle cost.
Duplex Steel Valves Specifications
| Parameter | Specification |
|---|---|
| Product | Duplex Steel Valves |
| Specification | ASME / ASTM A995/A182/A351/A890 |
| Standard | A PI 600/BS1414, API 598/BS EN 12266-1, ASME B 16.10, ASME B 16.5, ASME B 16.25, ASME B 16.34 |
| Size | 1/8" to 16" |
| End Connection | Screwed [NPT], Socket Weld, Flanged End, Screwed Parallel, Screwed Taper |
| Pressure rating | 150#,300#,600#,800#,1500# |
Equivalent Grades of Duplex Steel Valves
| STANDARD | WERKSTOFF NR | UNS |
|---|---|---|
| Duplex 1803 | 1.4462 | S31803 |
| Duplex 2205 | 1.4462 | S32205 |
Types of Duplex Steel Valves
Ball Valves
Quarter-turn valves for quick and tight shut-off.
Gate & Globe Valves
Isolation and throttling valves for process lines.
Check Valves
Non-return valves to prevent reverse flow.
Needle & Butterfly Valves
Fine flow control and large-bore regulation.
Applications & Industries
- Oil & Gas
- Chemical Processing
- Petrochemical
- Desalination
- Marine Applications
- Pulp & Paper
- Heat Exchangers
- Pressure Vessels
- Water Treatment
- Offshore Platforms
- Fabrication
- General Engineering
Quality & Inspection
Quality-Focused Manufacturing & Supply
Duplex Steel Valves can be supplied with inspection, testing and documentation according to the applicable specification and customer purchase requirements.
- Dimensional inspection
- Visual inspection
- Material grade verification
- Shell and seat pressure testing
- Valve operation testing
- Positive Material Identification (PMI) as applicable
- Material Test Certificate (MTC)
- Third-party inspection support
Why Choose Our Duplex Steel Valves?
Tight Shut-Off
Reliable sealing for process isolation.
Multiple Valve Types
Ball, gate, globe, check, needle and more.
Pressure Classes
Available from Class 150 to 2500.
Material Options
Matched to process media and temperature.
Duplex Steel Valves Manufacturer, Supplier & Exporter
Sawariya Metal Industries supplies Duplex Steel Valves for domestic and international projects in a wide range of sizes, grades and specifications. Products can be supplied in standard and custom dimensions according to drawings and purchase order requirements.
Every order can be supported with Mill Test Certificates, inspection reports, third-party inspection on request and secure export-worthy packaging.
Share your size, grade, quantity and specification requirements with our team to receive a competitive quotation for Duplex Steel Valves.
Related Duplex Steel Products Products
Duplex Steel Fasteners
Duplex Steel Fasteners are mechanical joining components such as bolts, nuts, studs, screws and washers used to assemble flanges, structures, machinery and equipment.
Duplex Instrumentation Fittings
Duplex Instrumentation Fittings include seamless and welded instrumentation tubes together with compression fittings, connectors and valves used to carry process fluids and signals safely to instruments.
Duplex Steel Ferrule Fittings
Duplex Steel Ferrule Fittings are compression-type tube fittings that use front and back ferrules to grip the tube and create a reliable, leak-tight seal without welding.
Technical Note: Technical values should be verified against the applicable ASTM / ASME / EN specification, purchase order requirements and Mill Test Certificate (MTC) for the supplied product.