Riddhi Siddhi Impex is a leading manufacturer and trusted Duplex Steel Butterfly Valve Domastic Supplier in India, delivering exceptional valve solutions tailored for high-performance industrial use. These valves are widely used in chemical, petrochemical, marine, and offshore applications due to their excellent resistance to corrosion and high strength-to-weight ratio. Made from premium grades like Duplex Steel UNS S31803 / S32205, these butterfly valves ensure reliability in aggressive environments.
The Duplex Steel Butterfly Valve features a disc mounted on a rotating shaft. When the valve is fully open, the disc is rotated a quarter turn to allow fluid to pass through, and when closed, the disc is rotated again to block the flow. This simple yet effective mechanism allows for rapid shutoff and control in pipelines. It is ideal for use in systems where space, weight, and ease of operation are essential considerations.
Duplex stainless steels are known for their superior mechanical strength and resistance to chloride-induced stress corrosion cracking, making these valves perfect for marine environments and desalination plants. These valves can handle extreme pressure and temperature conditions while maintaining long service life, ensuring minimal maintenance..
Riddhi Siddhi Impex manufactures these valves in various pressure classes and sizes, ranging from DN15 to DN1200, and offers multiple operation types like manual gear operation, pneumatic actuation, and electric actuation. All valves are manufactured to international standards such as API 609, ASME B16.34, and EN 593, ensuring their compatibility with global industrial requirements.
As a Duplex Steel Butterfly Valve Domastic Supplier, Riddhi Siddhi Impex serves a broad range of cities across India. Major industrial zones such as Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, and Surat rely on their timely supply and quality assurance. The company has also extended its reach to tier-2 and tier-3 cities like Rajkot, Vadodara, Bhopal, Jaipur, Coimbatore, and Nashik, ensuring industrial valves are accessible across sectors.
| Specification | Details |
|---|---|
| Product | Duplex Steel Butterfly Valve |
| Material Grade | UNS S31803 / UNS S32205 |
| Size Range | DN15 to DN1200 |
| Pressure Rating | PN10, PN16, PN25, PN40 |
| Operation | Manual, Pneumatic, Electric |
| End Connection | Wafer, Lug, Flanged |
| Temperature Range | -46°C to +300°C |
| Standards | API 609, ASME B16.34, EN 593 |
| Element | Min % | Max % |
|---|---|---|
| Chromium (Cr) | 21.0 | 23.0 |
| Nickel (Ni) | 4.5 | 6.5 |
| Molybdenum (Mo) | 2.5 | 3.5 |
| Manganese (Mn) | — | 2.0 |
| Carbon (C) | — | 0.030 |
| Silicon (Si) | — | 1.0 |
| Phosphorus (P) | — | 0.03 |
| Sulfur (S) | — | 0.02 |
| Iron (Fe) | Balance | |
| Property | Value |
|---|---|
| Tensile Strength | 620 MPa min |
| Yield Strength (0.2% Offset) | 450 MPa min |
| Elongation | 25% min |
| Hardness (Brinell) | 290 HB max |
| DN | Face to Face (mm) | OD (mm) | No. of Holes | Bolt Circle (mm) |
|---|---|---|---|---|
| 50 | 43 | 165 | 4 | 125 |
| 80 | 46 | 200 | 8 | 160 |
| 100 | 52 | 220 | 8 | 180 |
| 150 | 56 | 285 | 8 | 240 |
| 200 | 60 | 340 | 12 | 295 |
| Standard | Grade |
|---|---|
| ASTM | A890 Gr 4A (UNS S31803) |
| EN | 1.4462 |
| ASME | SA 351 |
| JIS | SCS14A |
| Type | Description |
|---|---|
| Gate Valve | Used for on/off control of fluids |
| Globe Valve | Designed for throttling flow |
| Ball Valve | Quarter-turn valve for isolation |
| Check Valve | Prevents reverse flow |
| Needle Valve | Precision flow control |
| Plug Valve | Rotating plug for flow control |
| Diaphragm Valve | Corrosion-resistant and sanitary |
Another highlight of Duplex Steel Butterfly Valves is their bi-directional sealing and low torque operation, which reduces operational costs over the long term. These valves are highly suitable for applications requiring on/off services or flow throttling. With elastomer-lined or metal-seated variants, the valves can be customized for a wide range of fluid types including seawater, chemical slurries, acids, and more.
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