Manufacturer, Supplier & Exporter of Super Duplex Steel Globe Valve

Super Duplex stainless steels, particularly grades such as UNS S32750 / S32760, are extensively used in demanding industrial environments thanks to their exceptional combination of corrosion resistance, high strength, and resistance to stress corrosion cracking. A Super Duplex Steel Globe Valve made of these alloys offers both flow regulation and shutoff capability under severe conditions. Riddhi Siddhi Impex is a recognized Super Duplex Steel Globe Valve Domastic supplier in India, delivering valves built from premium materials for high-critical applications.

In a globe valve, the flow path is controlled by a movable disc or plug that moves perpendicular to the seat, making it ideal for throttling or fine flow control. The Super Duplex Globe Valve thus is well-suited for systems where precise flow regulation is needed under corrosive or high-pressure service. The dual-phase microstructure of super duplex steel—ferrite + austenite—provides a robust envelope to resist high stresses, temperature fluctuations, and chloride attack.

Riddhi Siddhi Impex manufactures these globe valves in a wide size range (e.g. ½" up to 24" or DN 15 to DN 600) and in multiple pressure classes (150#, 300#, 600#, 800#, 1500#, 2500#) to suit various industrial installations. End connections include flanged (raised face, ring-type joint), butt-weld, socket weld, and threaded styles. The valves are available with manual, gear, pneumatic, or electric actuation depending on customer needs.

One of the compelling advantages of Super Duplex Globe Valves is their excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, which makes them popular in offshore, desalination, marine, and chemical processing plants. Their greater strength also leads to reduced wall thickness and lighter weight compared to traditional stainless steel valves for the same rating, helping in saving material and cost.

As a domestic supplier, Riddhi Siddhi Impex facilitates delivery across India’s major and emerging industrial centers: Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, and beyond. Even cities with developing infrastructure like Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Varanasi, Amritsar, Mysuru, Coimbatore, Kochi, Mangalore, Nashik, Kolhapur, and industrial hubs such as Dahej, Ankleshwar, Valsad, Rajpipla are part of their supply network.

Super Duplex Steel Globe Valve

Specification

Parameter	Details
Valve Type	Globe Valve (linear motion, throttling & shutoff)
Material Grade	Super Duplex Stainless Steel (UNS S32750 / S32760)
Size Range	½" to 24" (DN15 to DN600)
Pressure Classes	150#, 300#, 600#, 800#, 1500#, 2500#
End Connections	Flanged, Butt Weld, Socket Weld, Threaded
Operation	Handwheel, Gear, Pneumatic, Electric
Design / Test Standards	API 602 / ASME B16.34 / API 598 / ISO
Service Temperature Range	−46 °C to approx. 300 °C (depending on trim & seal materials)

Chemical Composition (Approximate for UNS S32750)

Element	Min (%)	Max (%)
Chromium (Cr)	24.0	26.0
Nickel (Ni)	6.0	8.0
Molybdenum (Mo)	3.0	5.0
Nitrogen (N)	0.24	0.32
Carbon (C)	—	0.030
Manganese (Mn)	—	1.20
Silicon (Si)	—	0.80
Phosphorus (P)	—	0.035
Sulfur (S)	—	0.020
Iron (Fe)	Balance

Mechanical Properties

Property	Typical Value
Yield Strength (0.2% offset)	≈ 550 MPa
Tensile Strength	≈ 750 MPa or higher
Elongation	≥ 25%
Hardness (Brinell)	≤ 310 HB
Modulus of Elasticity	≈ 200 GPa

Dimension Chart (Sample for Globe Valve Class 150/300)

Size (Inches)	Face-to-Face (mm)	Flange OD (mm)	Height (mm)
1"	130	108	220
2"	150	152	280
4"	230	229	360
6"	305	279	460
8"	356	343	550

Equivalent Grades & Standards

Standard / Spec	Equivalent / Remarks
UNS	S32750 / S32760
EN / DIN	1.4410, X2CrNiMoN22-5-3
ASTM / ASME	A182 / A351 (for cast/forged super duplex)
API / ANSI	API 602, API 598 for testing, ANSI B16.34 for dimensions

Other Valve Types in Super Duplex Steel

Type	Description / Common Use
Ball Valve	Quarter-turn isolate valve, common for tight shutoff
Gate Valve	Primarily for isolation, low pressure drop
Butterfly Valve	Compact and lighter, suitable for large diameters
Check Valve	Prevents reverse flow, often swing or lift type
Plug Valve	Rotary plug for isolation with simple design
Needle Valve	Precise control in small-bore piping

In its quality assurance process, Riddhi Siddhi Impex ensures each Super Duplex Globe Valve undergoes hydrostatic and pneumatic testing, dimensional verification, non-destructive examination (e.g. dye penetrant), and compliance with standards like API 602, ASME B16.34, ANSI/ASME B16.10, and API 598 for leakage performance. They can also furnish third‑party inspection reports and material test certificates.

Frequently Asked Questions (FAQs)

Q1: In which industries are Super Duplex Globe Valves used?

A1: They are used in oil & gas, offshore platforms, desalination, chemical plants, and marine environments—especially where chloride corrosion resistance is crucial.

Q2: Up to what temperature can a Super Duplex Globe Valve operate?

A2: Depending on trim and seal materials, operating temperatures up to ~300 °C are feasible. Cooling or special sealing may be needed at higher temps.

Q3: Are Super Duplex Globe Valves supplied across India?

A3: Yes. Riddhi Siddhi Impex supplies valves to major cities including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, and more.

Q4: What custom options are available?

A4: Options include special trims (stellite, Monel), actuated designs, anti-cavitation trims, and various seal materials to suit fluids and service environments.