1. Superior corrosion resistance:All internal surfaces in contact with the medium, including the body cavity, plug, and seat, are fully lined with fluoroplastics (e.g., F46/PFA). This material offers exceptional chemical inertness against almost all strong acids, alkalis, and oxidants.
2.Zero-leakage double sealing:The stem seal utilizes high-performance bellows as the primary seal, creating an absolute airtight barrier to eliminate leakage. Secondary packing seal is provided as a fallback to ensure system safety even if the bellows fails.
3.Precision pneumatic actuator:Equipped with a compact multi-spring pneumatic diaphragm actuator, providing low height, light weight, and high output force. Paired with a smart positioner, it achieves excellent linearity and repeatability.
4.Intrinsically safe attributes:Driven by compressed air without electrical signals in hazardous zones, providing natural explosion-proof safety. Available in air-to-open or air-to-close modes for fail-safe positioning upon air supply loss.
5.Optimized low-flow resistance path:The internal flow path is smooth and streamlined, significantly reducing pressure drop. The single-seat sealing design combined with precision-ground surfaces ensures bubble-tight shut-off.
6.Excellent vacuum resistance:Advanced compression molding ensures the lining is tightly bonded to the metal substrate, effectively preventing lining peeling or collapse under vacuum or negative pressure conditions.
7.Broad temperature and pressure adaptability:Suitable for aggressive conditions from -20°C to 150°C. The thermal expansion coefficient of the lining is optimized for dimensional stability under temperature fluctuations.
8.Modular maintenance design:The compact structure features a scientific connection between actuator and body. Key internals like the lined plug and seal kits are modular for easy replacement, reducing downtime and maintenance costs.