Product Description

The Eccentric Semi-Ball Valve crafted from premium Ductile Iron QT450-10 is engineered to deliver exceptional flow control and long-lasting reliability in demanding industrial environments. Designed with a PN10 pressure rating and a robust Gear Operated Flanged Type configuration, this valve provides smooth, precise operation even under high-stress conditions. Ideal for applications spanning water treatment, oil and gas distribution, and chemical processing, the eccentric semi-ball design minimizes friction during operation. This significantly reduces wear and tear on the sealing surfaces, ensuring a tighter shut-off and extending the overall service life of the valve. For procurement teams and engineers, this means lower maintenance costs, reduced downtime, and enhanced operational efficiency. 

Comprehensive Product Specifications & Material Standards

Our ductile iron semi-ball valves are manufactured and tested in strict accordance with international standards, including GB/T, API, and ASME. The detailed specifications below outline the design, face-to-face dimensions, and testing protocols, ensuring reliable integration into your existing piping infrastructure. The main part materials, featuring high-grade QT450 ductile iron, 20Cr13 stainless steel stems, and durable PTFE/RPTFE seats, are carefully selected to withstand temperatures ranging from -40℃ to 121℃ and resist various media including water, oil, gas, and nitric acid.

Chief Features & Operational Advantages

Our eccentric semi-ball valves are meticulously designed to address common pipeline challenges, offering superior sealing, safety, and operational ease. These core features directly translate into tangible value for demanding industrial projects:

• BOLTED BONNET: Provides a highly secure, leak-proof body joint while allowing for straightforward disassembly. This design significantly reduces maintenance time and simplifies on-site servicing.

• BLOW-OUT PROOF STEM: Engineered to prevent the stem from being ejected by internal pipeline pressure, ensuring maximum workplace safety during unexpected pressure surges.

• STRUCTURE IMPROVED ON API STANDARDS: Upgraded design elements based on strict API specifications guarantee superior mechanical strength, structural integrity, and reliable performance in heavy-duty applications.

• CLEAR OPENING AND CLOSING POSITION: Equipped with intuitive visual indicators that allow operators to instantly confirm the valve's status, minimizing the risk of operational errors.

• AVAILABLE WITH WORM GEAR OPERATOR: The integrated gear mechanism enables effortless, precise control of the valve. It minimizes the physical effort required, especially crucial for large-diameter pipelines or high-pressure adjustments.

• FLANGED ENDS: Designed for standardized, secure connections, facilitating quick installation and robust alignment within flanged piping systems to prevent leakage.

• BUTT-WELDING ENDS, FULL PORT, FLOATING OR TRUNNION MOUNTED TYPE: Features a full port design for maximum flow capacity with minimal pressure drop. Available in versatile mounting configurations to perfectly suit specific project requirements and flow dynamics.

Main External and Connection Dimensions

Accurate dimensional data is critical for proper pipeline design and seamless installation. The following schematic details the external and connection dimensions of our gear-operated flanged semi-ball valves, providing engineers and procurement teams with the precise measurements needed to ensure a perfect fit and eliminate installation risks.

Precision Valve Manufacturing

Professional Valve Manufacturer | Integrated Manufacturing

Raw Material

We select high-quality raw materials according to product specifications and international standards. All incoming materials are carefully inspected to ensure chemical composition, mechanical properties and traceability.

Forging & Casting

Advanced forging and casting processes are used to produce strong and reliable valve bodies and components. Strict process control ensures uniform structure, dimensional accuracy and excellent mechanical performance.

CNC Machining

Our CNC machining equipment provides precise and consistent processing of valve components. Critical dimensions, threads and sealing surfaces are strictly controlled to ensure accurate assembly and reliable sealing performance.

Shot Blasting & Coating

Valve surfaces are professionally shot blasted to remove rust, scale and impurities. Protective coatings are then applied according to customer requirements, providing excellent corrosion resistance and a durable surface finish.

Pressure Testing

Every valve undergoes strict pressure testing before shipment. Body and seat tests are performed according to applicable standards and customer specifications to verify pressure resistance and sealing reliability.

Quality Inspection

Our quality control team conducts comprehensive inspections throughout the production process. Finished valves are checked for dimensions, appearance, materials, pressure performance and overall quality before final approval and shipment.