SS 2 Piece Ball Valve

2 piece ball valve is a fundamental and versatile key component in fluid control systems. It is formed by connecting two body sections via threads or bolts around the stainless steel ball assembly.

Design & Structural Features of the 2 piece ball valve

The SS 2 piece ball valve consists of two main sections. This structure allows for disassembly for maintenance, cleaning, or seat replacement. The two sections are typically joined tightly by a large union nut, ensuring a strong, pressure-tight seal.

• Superior Material: The valve body is cast from CF8M (equivalent to 316) or CF8 (equivalent to 304) stainless steel, demonstrating excellent resistance to rust, corrosion, and a wide range of media including water, steam, oils, and various chemicals.
• Precision Ball & Stem: The ball is usually chrome-plated or precision-ground and polished to a high surface finish, which effectively reduces friction and ensures a tight seal with the seats. The stem is integrally forged or keyed to the ball, creating a robust structure that prevents blow-out under pressure.
• Fire-Safe Design:Many models are equipped with a fire-safe design. In the event of a fire, if the PTFE seats melt, secondary metal-to-metal seals engage to provide temporary shut-off, preventing catastrophic failure.
• Anti-Static Device: A built-in spring-loading mechanism ensures electrical continuity between the stem and the ball, and the ball and the body, preventing the buildup of static electricity, which could pose an ignition risk when handling flammable fluids.

Technical Performance & Advantages of the 2 piece ball valve

• Excellent Shut-Off Performance:Achieves bubble-tight sealing, minimizing fluid loss.
• Low Operating Torque:The polished ball and low-friction seats allow for easy 90-degree on/off operation with minimal effort.
• Minimal Flow Resistance:The full-bore design provides a straight-through flow path, resulting in negligible pressure drop.
• Durability & Long Service Life:The combination of stainless steel material and wear-resistant internal parts ensures a long service life, even under demanding operating conditions.
• Easy Maintenance:The two-piece structure allows for relatively straightforward internal inspection and part replacement after the valve is removed from the pipeline.
• Wide Range of Applications: Suitable for a broad temperature range (e.g., typically -29℃ to 204℃, depending on the seat material) and various pressure ratings.

The SS 2 piece ball valve is widely used in the following industries:

• Chemical & Petrochemical:Transporting acids, solvents, and other process fluids.
• Oil & Gas:Used in pipelines, storage tanks, and fuel handling systems.
• Power Generation: For boiler feed water, steam, and cooling water pipelines.
• Water Treatment: Applied in potable water, wastewater, and desalination plants.
• Marine & Offshore Engineering: Widely adopted due to its excellent corrosion resistance in saltwater environments.
• Food & Pharmaceutical: Models polished to sanitary standards (e.g., Ra 0.8µm) are used in hygienic processes.

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