Manufacturer, Supplier & Exporter of Super Duplex Steel Ball Valve

Super Duplex Steel Ball Valves are sophisticated quarter‑turn valves made from high-performance super duplex alloys such as UNS S32750 / S32760. These alloys combine high chromium, molybdenum, and nitrogen to deliver outstanding corrosion resistance—particularly in chloride-rich and harsh chemical environments. Riddhi Siddhi Impex, as a trusted Super Duplex Steel Ball Valve Domastic supplier, manufactures these valves to exacting standards to serve critical industrial applications across India.

Because ball valves provide fast open/close operation with minimal pressure drop, super duplex ball valves are used for on/off isolation in pipelines carrying aggressive fluids—such as seawater, chemical feed, brine, and acid. The super duplex material ensures longevity, resistance to stress corrosion cracking, and high strength under pressure cycles, making them ideal for offshore, desalination, and chemical plants.

Riddhi Siddhi Impex offers super duplex ball valves in a variety of sizes (commonly from ½" up to 24" or DN15 to DN600) and pressure classes (150#, 300#, 600#, 800#, up to 2500#). End connections include flanged, butt-weld, socket-weld, and threaded styles. Options also include floating or trunnion-mounted ball configurations, backseat design, and fire-safe construction depending on the client’s application needs.

As a domestic supplier, Riddhi Siddhi Impex services many Indian metropolitan and industrial centers. They deliver to Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, and Rajkot. Their penetration further extends to Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru, Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Dahej, Ankleshwar, Navsari, Valsad, Narmada, and Rajpipla.

Super duplex ball valves manufactured by Riddhi Siddhi Impex adhere to international specifications like API 6D, ASME B16.34, API 608, and ISO 17292. Each valve is subjected to rigorous testing: shell test, seat test, fugitive emission checks, and sealing tests. Clients may also request third-party inspection and full material traceability certificates.

Super Duplex Steel Ball Valve Specifications

Specification

Property	Details
Material	Super Duplex Stainless Steel (UNS S32750 / S32760)
Size Range	1/2" to 24" (DN15 to DN600)
Pressure Rating	150# to 2500# (ASME Class)
End Connections	Flanged, Butt Weld, Socket Weld, Threaded
Operation	Manual, Gear Operated, Pneumatic, Electric Actuated
Working Temperature	-50°C to 300°C (depends on sealing material)
Application	Oil & Gas, Chemical, Petrochemical, Water Treatment, Desalination

Chemical Composition (%)

Element	Typical Composition (S32750)
Carbon (C)	≤ 0.03
Chromium (Cr)	24 - 26
Nickel (Ni)	6 - 8
Molybdenum (Mo)	3 - 5
Nitrogen (N)	0.14 - 0.20
Manganese (Mn)	≤ 2
Iron (Fe)	Balance

Mechanical Properties

Property	Value
Tensile Strength	≥ 770 MPa
Yield Strength (0.2% offset)	≥ 450 MPa
Elongation (in 50 mm)	≥ 25%
Hardness	Max 290 HB
Impact Strength (Charpy V-notch)	≥ 100 J at -40°C

Dimension Chart (Typical for Ball Valve)

Size (inch)	Face to Face (mm)	End to End (mm)	Flange Diameter (mm)	Weight (kg)
1/2"	110	150	100	5
1"	130	170	110	7
2"	190	220	150	12
4"	250	290	210	30
6"	320	360	280	55
8"	400	450	350	90

Equivalent Grades and Standards

Grade	Equivalent Grades	Standard
Super Duplex Steel	S32750, S32760, ASTM A182 F53, ASTM A182 F55	ASTM, ASME, UNS
Ball Valve Standards	API 6D, API 608, ISO 17292, ASME B16.34	International

Other Types of Valves by Riddhi Siddhi Impex

Valve Type	Material Options	Application
Gate Valve	Super Duplex, Duplex, Stainless Steel 316	Isolation
Globe Valve	Super Duplex, Duplex, Stainless Steel 316	Flow Regulation
Check Valve	Super Duplex, Duplex, Stainless Steel 316	Backflow Prevention
Butterfly Valve	Super Duplex, Duplex, Stainless Steel 316	Flow Control
Ball Valve	Super Duplex, Duplex, Stainless Steel 316	On/Off Control
Needle Valve	Stainless Steel 316, Duplex	Precision Flow Control

One of the main advantages of super duplex ball valves is low maintenance and long service life. Their high strength allows thinner wall sections relative to conventional stainless steels, reducing weight and material cost without compromising performance. The corrosion resistance also reduces risks of pitting or crevice attack, which is critical in aggressive process environments.

Frequently Asked Questions (FAQs)

Q1: What industries commonly use Super Duplex Steel Ball Valves?

A1: These valves are widely used in oil & gas, petrochemical, desalination, chemical processing, and marine industries due to their corrosion resistance and strength.

Q2: What makes Super Duplex Steel better than standard stainless steel?

A2: Super Duplex Steel offers higher strength and better resistance to chloride stress corrosion cracking and pitting compared to standard stainless steels like 304 or 316.

Q3: Can these ball valves be customized?

A3: Yes, Riddhi Siddhi Impex offers customization in size, pressure rating, end connections, seat material, and actuation options to suit specific applications.

Q4: Do you provide certification and testing reports?

A4: Absolutely, all valves come with material test certificates (MTC), inspection reports, and third-party certifications as per client requirements.