Cast Iron and Ductile Iron Sand Casting Ball Valve

In industrial fluid control systems, ball valves serve as critical components for reliable flow regulation. Our specialized sand casting services for Cast Iron and Ductile Iron Ball Valves deliver robust, high-performance solutions engineered to withstand demanding operational conditions across various industries. These valves combine exceptional durability with precise functionality, ensuring long-term service life in both standard and severe applications.

Premium Material Selection
We manufacture ball valves using high-grade cast iron (GG25) and ductile iron (GGG50), selected for their distinct mechanical advantages. Gray cast iron provides excellent vibration damping and reliable performance in non-shock load applications, while ductile iron offers superior tensile strength (500 MPa minimum) and enhanced impact resistance through its spheroidal graphite microstructure. Both materials demonstrate outstanding corrosion resistance and maintain structural integrity across wide temperature ranges from -20°C to 350°C, making them suitable for diverse media including water, oil, gas, and mild chemical solutions.

Advanced Sand Casting Process
Our manufacturing employs resin sand casting technology with precise process control:

• CAD-optimized pattern design ensuring dimensional accuracy

• Controlled pouring temperatures between 1380-1420°C

• In-mold inoculation for consistent graphite formation in ductile iron

• Real-time thermal monitoring during solidification

Post-casting operations include:

• Precision CNC machining of ball seats and sealing surfaces

• Automated grinding and deburring for smooth fluid passage

• High-precision ball manufacturing with surface finish <0.8 μm Ra

• Assembly with corrosion-resistant stem and sealing components

Performance Characteristics
Our sand-cast ball valves deliver:

• Pressure ratings: PN10 to PN25 (150-300 psi)

• Temperature range: -29°C to 350°C

• Full port and standard port configurations

• Fire-safe design options per API 607 standards

• Bi-directional sealing capability

• Low operating torque through optimized seat design

Industrial Applications
These valves serve critical functions in:

• Water and wastewater treatment systems

• Chemical processing and petrochemical plants

• Oil and gas pipeline applications

• Power generation facilities

• HVAC and building services

• Marine and offshore installations

Each valve undergoes comprehensive quality verification including:

• Shell and seat pressure testing to API 598 standards

• Material certification with chemical analysis reports

• Dimensional inspection using CMM technology

• Surface coating quality assessment

Our technical engineering team provides application-specific guidance on material selection, pressure-temperature ratings, and trim options to ensure optimal valve performance in specific service conditions. By combining advanced foundry technology with precision machining, we deliver ball valves that ensure reliable flow control while minimizing maintenance requirements and lifecycle costs across industrial fluid handling systems.