Super Duplex Instrumentation Ball Valves Manufacturer and Supplier in India
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Super duplex steel instrumentation ball valves refer to small quarter turn valves, which are specifically built for reliable isolation of high-pressure instrumentation system fluids with chemicals that corrode, and chloride presence. These valves are made of super duplex stainless steel, UNS S32750 (EN 1.4410) and UNS S32760 (EN 1.4501) to provide strength, resistance to pitting, crevice corrosion, and chloride induced stress corrosion cracking. The size of these valves is available from 1/8″ to 1″, and the valve connection includes NPT, BSPP, BSPT, and twin ferrule compression. With PEEK seats, the valves are qualified to 6000 psig (414 bar), but lower pressure rating for the other valve seats including PTFE and TFM. Aashish Metals manufactures and supplies these valves in India with EN 10204 3.1 certification, PMI and hydrostatic testing.
Technical data
Specifications of Super Duplex Steel Instrumentation Ball Valves
| Parameter | Specification & Standard Options |
|---|---|
| Primary Material / Grade | Super Duplex: UNS S32750 (EN 1.4410), UNS S32760 (EN 1.4501) |
| Nominal Size Range | 1/8" to 1" (3.18 mm to 25.4 mm bore / orifice options) |
| Pressure Ratings | Up to 6000 psig (414 bar) at ambient with PEEK seats; lower with PTFE / TFM (see rating table) |
| Temperature Limits | -29°C to 200°C with soft seats; metal body is code-limited to about 300°C |
| End Connections | Female NPT, Male NPT, BSPP (G), BSPT (R/Rp), Twin Ferrule Tube Compression |
| Valve Functions | 2-Way (On/Off Isolation), 3-Way (L-Port Diverting, T-Port Mixing/Bypass) |
| Body Construction | 2-Piece Threaded, 3-Piece Bolt-in-Place, Panel Mountable |
| Seat & Seal Options | PTFE, PEEK, PVDF, Flexible Graphite Stem Packing |
| Operation Methods | Stainless Steel Lever Handle, T-Bar, Panel Nut, ISO 5211 Actuator Pad |
| Testing & Quality Assurance | Shell & Seat Hydrostatic Test, Pneumatic Proof Test, PMI Inspection |
| Certificates & Compliance | EN 10204 3.1 MTR, NACE MR0175 / ISO 15156-3 Sour Service Compliance |
Chemical Compositions of Super Duplex Steel Instrumentation Ball Valves
| Element | UNS S32750 (EN 1.4410) | UNS S32760 (EN 1.4501) |
|---|---|---|
| Carbon (C) | 0.030 max | 0.030 max |
| Manganese (Mn) | 1.20 max | 1.00 max |
| Silicon (Si) | 0.80 max | 1.00 max |
| Phosphorus (P) | 0.035 max | 0.030 max |
| Sulfur (S) | 0.020 max | 0.010 max |
| Chromium (Cr) | 24.0 to 26.0 | 24.0 to 26.0 |
| Nickel (Ni) | 6.0 to 8.0 | 6.0 to 8.0 |
| Molybdenum (Mo) | 3.0 to 5.0 | 3.0 to 4.0 |
| Nitrogen (N) | 0.24 to 0.32 | 0.20 to 0.30 |
| Copper (Cu) | 0.50 max | 0.50 to 1.00 |
| Tungsten (W) | Not specified | 0.50 to 1.00 |
| Iron (Fe) | Balance | Balance |
Mechanical and Physical Properties of Super Duplex Steel Instrumentation Ball Valves
| Property | UNS S32750 (F53) | UNS S32760 (F55) |
|---|---|---|
| Tensile Strength, min. | 795 MPa (116 ksi) | 750 MPa (109 ksi) |
| Yield Strength (0.2% offset), min. | 550 MPa (80 ksi) | 550 MPa (80 ksi) |
| Elongation in 2 in. (50 mm), min. | 15% | 25% |
| Hardness, max. | 310 HBW (Brinell) / 32 HRC (Rockwell C) | 310 HBW (Brinell) / 32 HRC (Rockwell C) |
| Density | 7.8 g/cm³ (0.282 lb/in³) | 7.8 g/cm³ (0.282 lb/in³) |
Pressure Rating and Temperature Limits of Super Duplex Steel Instrumentation Ball Valves
| Valve Size | Seat Material | Working Pressure @ -29°C to 38°C (-20°F to 100°F) | Working Pressure @ 150°C (302°F) | Working Pressure @ Max. Rated Temp. | Max. Temperature Limit |
|---|---|---|---|---|---|
| 1/8" to 1/2" | PEEK | 6000 psig (414 bar) | 4800 psig (331 bar) | 2500 psig (172 bar) | 200°C (392°F) |
| 1/8" to 1/2" | PTFE / TFM | 1500 psig (103 bar) | 600 psig (41 bar) | 0 psig (0 bar) | 180°C (356°F) |
| 3/4" to 1" | PEEK | 5000 psig (345 bar) | 4000 psig (276 bar) | 2000 psig (138 bar) | 200°C (392°F) |
| 3/4" to 1" | PTFE / TFM | 1500 psig (103 bar) | 500 psig (34 bar) | 0 psig (0 bar) | 180°C (356°F) |
Dimensions Chart of Super Duplex Steel Instrumentation Ball Valves
| Nominal Size | Orifice Dia. (mm) | Face-to-Face L (mm) | Body Height H (mm) | Handle Length W (mm) | Flow Coeff. (Cv) | Weight (kg) |
|---|---|---|---|---|---|---|
| 1/8" NPT (3.18 mm) | 3.2 | 68.0 | 48.0 | 60.0 | 0.6 | 0.45 |
| 1/4" NPT (6.35 mm) | 5.0 | 72.0 | 54.0 | 65.0 | 1.2 | 0.55 |
| 1/2" NPT (12.7 mm) | 10.0 | 86.0 | 66.0 | 90.0 | 4.8 | 0.95 |
| 3/4" NPT (19.05 mm) | 15.0 | 102.0 | 78.0 | 110.0 | 9.5 | 1.60 |
| 1" NPT (25.4 mm) | 20.0 | 118.0 | 88.0 | 130.0 | 16.2 | 2.40 |
Types of Duplex Steel Instrumentation Ball Valves
Applications and Industrial Uses of Super Duplex Steel Instrumentation Ball Valves
- Offshore Oil and Gas Platforms
- Subsea Production Control Systems
- Seawater Desalination Plants
- Chemical Processing Industries
- Marine Engineering Systems
- Petrochemical Processing Plants
- Offshore Drilling Equipment
- High-Pressure Chemical Injection Systems
Frequently Asked Questions
A compact quarter-turn valve made from UNS S32750 or S32760, offering high strength and excellent resistance to chloride corrosion.
S32750 (2507) contains high chromium, molybdenum, and nitrogen, while S32760 (EN 1.4501) also contains copper and tungsten for enhanced corrosion resistance.
Yes, for severe chloride and seawater environments. Super duplex offers higher strength and better resistance to pitting and crevice corrosion than 2205.
Depending on size, seat material, and temperature, valves with PEEK seats can handle pressures up to 6000 psig (414 bar).
Super duplex generally has an upper service limit of approximately 300°C to 315°C. Actual limits depend on seat material and operating conditions.
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