Double safety structure of valve stem: In order to prevent sudden accidents caused by valve stem damage or flying out due to unknown
reasons, independent valve stem flying prevention mechanisms are designed at the upper and lower ends of the valve stem, which fully
complies with standard API 609 and safety requirements for use.
Two-way sealing elastic valve seat:The valve seat adopts a flexible lip sealing ring elastic structure, which can automatically adjust when the
temperature and pressure change to ensure that the sealing performance of the valve is not affected;This structure can achieve two-way
sealing and meet the standard of no bubble leakage.
Internal travel limit: Minimize the probability of valve seat damage and extend the service life of the valve seat.
Fireproof and anti-static structure (optional):Can Effectively protect the safety of equipment and personnel, reduce the probability of
accidents, and improve the safety factor of the site.
High-strength one-piece valve stem: The high-strength, integral valve stem design ensures effective torque transmission and maintenance of
sealing. At the same time, the valve stem head is standardized and has the characteristic of being able to replace the actuator.
◎ Main material: low temperature steel, stainless steel, alloy steel, etc.
◎ Size range: NPS6~NPS80/DN150~DN2000
◎ Pressure level: Class150~ Class 600/PN10~PN50
◎ Temperature range: -196℃~120℃
◎ Application scenarios: Liquefied natural gas (LNG) process systems, used for flow regulation and control of system pressure; chemical process
systems, such as refrigerant, liquid oxygen, liquid nitrogen, etc. transportation systems; food processing, such as liquid food delivery systems, etc.
Designed specifically for deep cold medium working conditions such as LNG, liquid nitrogen, and liquid oxygen, it adopts special stainless steel or low-temperature alloy valve bodies. Through deep cold treatment, it ensures reliable sealing even in an extreme environment of -196℃. The innovative lateral maintenance port structure allows for quick replacement of the sealing components without disassembling the valve, significantly improving maintenance efficiency. The optimized double eccentric butterfly plate, combined with multi-level metal hard seals, achieves zero leakage and long service life under ultra-low temperature conditions. At the same time, it is equipped with a longened valve stem heat insulation structure, effectively blocking the conduction of cold energy.
The C-type wear-resistant ball valve is a valve designed specifically for harsh working conditions, characterized by its eccentric ball setting and "C" - shaped channel. This design cleverly utilizes the translational characteristics of the sphere during rotation, achieving a "wedging" effect with the valve seat, thereby significantly improving the sealing performance. In addition, its ingenious upper and lower support axis positioning structure not only ensures the stability of the sphere, but also avoids tilting, allowing the medium thrust to be evenly dispersed, thereby extending its service life. This design not only optimizes the sealing performance, but also reduces the opening and closing torque and improves the opening and closing efficiency. Widely used in industries such as coal chemical, petrochemical, offshore platforms, LNG, etc.
When the disc of the lift check valve slides along the vertical center line of the valve body and the medium flows forward, the disc is lifted by the fluid thrust and the medium passes smoothly; When the medium stops flowing or reverse flowing, the valve disc quickly closes under the action of its own gravity and the reverse thrust of the fluid to prevent the medium from flowing back. This valve is usually equipped with a guide sleeve to ensure that the disc remains smooth during lifting and accurately falls back onto the seat.