● A single elastic valve seat sealing structure achieves dynamic sealing through system pressure, and is durable;
● It can maintain reliable sealing without the need to use additional sealing rings or metal components;
● It can operate a bidirectional leak-free seal;
● The lip-edge sealing design compensates for temperature and pressure changes during use;
● The double eccentric structure ensures no contact between the valve seat and the disc during opening and closing, eliminating wear at both the upper and lower ends of the valve seat during frequent opening, reducing the operating torque, and lowering the requirements for the operating machinery.
● There is a fly prevention step at the top of the shaft, which prevents the upper part of the shaft from moving out of the valve cover in case of an accident.
● Maintenance is convenient. Just remove the pressure plate to replace the valve seat, without the need to disassemble the disc and the shaft.
● It combines flow interruption and control, featuring excellent control characteristics; the flow characteristic curve is in a geometric ratio change; the adjustment range is wide; even when used for control, it can still achieve a tight seal;
Material: Carbon Steel, Stainless Steel, Alloy Steel Nominal Size: NPS 2"~64", DN 50~1600
Pressure Rate: Class 150~600, PN 10~100
Temperature Range: -46°C~+200°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
◎ Pressure Test: API 598、ISO 5208、EN 12266-1、GOST 9544
The Concentric butterfly valve is an industrial valve used for the on-off and flow control of pipeline systems. It is widely applied in fields such as petroleum, chemical industry, metallurgy, and hydropower. Its core structural feature is that the axis of the valve stem, the center of the butterfly plate, and the center of the body are on the same axis, featuring simple manufacturing and balanced opening and closing torque. By selecting different materials for the valve plate, valve stem, and sealing seat, it can be adapted to various different working environments, such as desulfurization, vacuum, and seawater desalination systems.
Designed specifically for deep-cold media such as LNG and liquid oxygen, this valve features an austenitic stainless steel body that undergoes special deep-cold treatment to ensure reliable sealing and operational performance under extreme conditions of -196℃. The valve stem adopts an extended neck design and is equipped with a vacuum insulation structure, effectively blocking the transmission of cold energy. The valve can be equipped with either a flat seal or a conical seal structure, allowing for selection based on different pressure ratings, and is suitable for precise flow control in liquefied natural gas storage and transportation, air separation equipment, and low-temperature chemical systems.
The Side Entry Cryogenic Floating Ball Valve is specially designed for deep cryogenic media (such as LNG, liquid nitrogen, liquid oxygen, etc.) applications. It adopts a unique side-mounted structure to ensure stable operation in extreme low-temperature environments below -196°C~+150°C. The valve body is made of high-quality stainless steel or special alloy materials, combined with precise processing techniques, achieving zero leakage and long service life under ultra-low temperature conditions. It is widely used in liquefied natural gas, air separation equipment, chemical and energy fields, and is a reliable choice for fluid control in harsh conditions.