●Unique, compact, and lightweight design with flexible and labor-saving operation;
●Provides reliable sealing that meets various standards;
●Offers good flow characteristics and has a regulating function;
●Utilizes an eccentric design to minimize wear on the sealing surface, extending the valve's lifespan;
●Suitable for a wide range of applications, including water, steam, oil, and gas;
●Applicable across various conditions including different temperatures, pressures, and corrosive environments;
●Features a triple eccentric hard-sealed butterfly valve with an integral body and seat, the seat's sealing surface is coated with temperature and corrosion-resistant materials;
●Three eccentricities position the shaft and sealing surfaces to optimize sealing and reduce wear;
●Equipped with multi-layer sealing rings on the valve plate, enhancing sealing performance and operational ease, suitable for both high and low temperatures, ensuring zero leakage.
Material: Carbon Steel, Stainless Steel, Alloy Steel
Nominal Size: NPS 2"~64", DN 50~1600
Pressure Rate: Class 150~1500, PN 10~250
Temperature Range: -46°C~538°C
Operator: Manual, Pneumatic, Electric, etc...
Application range: Suitable for water supply and drainage and gas pipelines in food, medicine, chemical industry, petroleum, electric power, light textile, paper making, etc. to adjust the flow and intercept the medium.
◎ Design Standard: ASME B16.34、API 609、EN 593、
◎ Pressure Temperature Rate: ASME B16.34、EN12516-1、
◎ Face to Face: API 609、ISO 5752、EN558
◎ Flange Standard: ASME B16.5、ASME B16.47、EN 1092、GOST 33259、GB/T 9124
◎ Butt Weld: ASME B16.25、EN 12627
◎ Pressure Test: API 598、ISO 5208、EN 12266-1、GOST 9544
There is an oil groove between the valve body and the sealing surface of the pressure-balanced plug valve, and sealing grease can be injected into the valve seat through the oil nozzle at any time to improve the sealing performance. The material of the parts and the size of the flange can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.
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.
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.