Product Name & Standards3-Piece Screwed Ball ValveCompliant with API 608, ASME B16.34, and ANSI B16.11 standards.
Core DefinitionA versatile flow control valve designed for plumbing and industrial systems, featuring a three-piece construction joined by threaded connections. It incorporates a rotatable ball with a central through bore to regulate the flow and pressure of liquids or gases. Renowned for easy installation, straightforward maintenance, exceptional durability, and long service life, it adapts to a wide range of fluid control applications.
Structure & Working Principle
- Key Components: Three-piece valve body (upper cover, middle body, lower cover) connected via threads, rotatable spherical plug with a central bore, valve stem, and manual lever handle (or quarter-turn actuator).
- Operating Mechanism: Rotating the handle 90 degrees drives the valve stem, rotating the spherical plug—when the plug’s bore aligns with the pipeline, fluid flows freely; when rotated to block the flow path, it shuts off or regulates flow/pressure. The three-piece design allows easy disassembly without removing the valve from the pipeline, facilitating access to internal components.
- Connection Method: Threaded (NPT/BSPP) ends for secure, leak-tight integration with threaded pipelines, simplifying on-site assembly.
Performance Advantages
- Easy installation & maintenance: Threaded connections enable quick mounting, while the three-piece detachable structure allows hassle-free disassembly for cleaning, repair, or seal replacement (no need to disconnect from the pipeline).
- Durable & long-lasting: Robust three-piece construction and high-grade materials resist corrosion, wear, and operational stress, ensuring extended service life.
- Reliable flow/pressure regulation: Precision-engineered spherical plug and valve seat deliver consistent sealing performance and accurate control over fluid flow and pressure.
- Structural flexibility: Modular three-piece design enhances compatibility with different internal components, supporting customization for specific application needs.
Key Specifications
- Pressure Rating: PN10 – PN250 / Class 150 – 1500.
- Operating Temperature: -29℃ – 425℃ (carbon steel body) / -196℃ – 550℃ (stainless steel body).
- Body Materials: Carbon Steel (A105), Stainless Steel (304L/316L), Brass (ASTM B16).
- Ball Core Material: Stainless Steel (304L/316L), Brass (for low-pressure applications).
- Sealing Material: PTFE (Polytetrafluoroethylene) – ensures leak-proof performance and chemical resistance.
- Connection Type: Screwed (NPT/BSPP) – compatible with standard threaded pipelines.
- Size Range: 1/4” – 2” (common threaded valve sizes for general applications).
Application Fields
- Industrial Systems: Oil & gas distribution, chemical processing, petrochemical low-to-medium pressure pipelines, and process fluid control.
- Commercial Infrastructure: Municipal water/gas supply networks, commercial building plumbing, HVAC systems, and fire protection pipelines.
- Residential & General Use: Home water/gas lines, small-scale heating systems, and DIY plumbing projects.
- Specialized Scenarios: Fluid systems requiring frequent maintenance, precise flow/pressure regulation, and reliable long-term operation (e.g., instrumentation lines, food processing auxiliary pipelines).