5A Super Duplex American Standard Flange Ball Valve is a premier industrial isolation valve designed for the most aggressive, high-pressure environments. Because it is engineered in full accordance with ASME B16.34 and API 608, this valve utilizes 5A Super Duplex Stainless Steel (CE3MN) to deliver elite corrosion resistance. Consequently, it has become the preferred choice for mechanical strength in global oil, gas, and chemical projects.
Description
5A (ASTM A890 Grade 5A / CE3MN / UNS J93404) represents the high-end of duplex alloy technology, specifically suited for severe service:
- SCC Immunity: The balanced ferritic-austenitic microstructure is virtually immune to chloride-induced stress corrosion cracking (SCC), making it the industry standard for offshore and subsea applications.
- Maximum Pitting Resistance: With a PREN (Pitting Resistance Equivalent Number) greater than or equal to 40, 5A provides superior protection against pitting and crevice corrosion in hot seawater and concentrated brine.
- Exceptional Yield Strength: Offers significantly higher mechanical strength than standard duplex (4A) or 316L stainless steel, allowing for reliable operation under extreme pressure cycles.
Features
- ANSI/ASME Global Compliance: Fully compliant with ASME B16.5 (flanges), ASME B16.10 (face-to-face), and ASME B16.34 (pressure/temperature ratings), ensuring seamless technical integration into international piping networks.
- Full Bore Flow Efficiency: The internal diameter of the ball matches the pipe’s bore, providing a straight-through flow path that results in negligible pressure drop and maximum flow capacity.
- Precision-Machined Ball & Seats: The 5A super duplex ball is mirror-polished and paired with high-performance seats (RPTFE, PEEK, or Metal-to-Metal) to ensure bubble-tight shut-off and low operating torque.
- Safety-First Design: Features a blow-out proof stem, anti-static devices, and a fire-safe structure certified to API 607, providing critical protection in volatile industrial environments.
- Modular Actuation: Equipped with an ISO 5211 mounting pad for easy installation of pneumatic, electric, or hydraulic actuators for remote system automation.
Specifications
| Feature | Specification |
| Design Standard | API 608 / ASME B16.34 |
| Flange Dimensions | ASME B16.5 Class 150/300/600/900 |
| Face-to-Face | ASME B16.10 |
| Body Material | 5A Super Duplex Steel (CE3MN / UNS J93404) |
| Pressure Class | Class 150, 300, 600, 900, 1500 |
| Testing Standard | API 598 |
Applications
- Offshore Oil & Gas: Seawater injection, subsea manifolds, and floating production storage and offloading (FPSO) units.
- Chemical Processing: Handling high-temperature organic acids, chlorides, and aggressive chemical catalysts.
- Desalination: High-pressure reverse osmosis (RO) systems and concentrated brine handling.
- Power Generation: Critical cooling water systems and chemical treatment lines in coastal power plants.
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