1. Ultra-low temperature performance: Through deep cold treatment technology, the valve ensures reliable sealing within the temperature range of -100℃, without the risk of brittleness.
2. Side-mounted design: The valve cover is installed sideways, eliminating the need to dismantle the pipeline during maintenance, significantly reducing maintenance costs and downtime.
3. Dual sealing guarantee: Using a combination of metal hard seal and soft seal, it has strong anti-wear properties and achieves zero leakage in both directions.
4. Anti-frosting structure: The elongated valve stem design and low-temperature insulation protection effectively reduce heat conduction and prevent external frosting.
5. Lightweight and high-strength: Optimizing the valve body structure, it reduces weight while ensuring the pressure-bearing capacity, facilitating installation and transportation.
6. Wide applicability: Compliant with international standards such asAPI 6D、 BS6364 and ISO28921, suitable for high-end fields such as LNG storage and transportation, aerospace, and chemical industries.
◎ Design standards: Stainless Steel, Alloy Steel
◎ Main material: NPS1/2～NPS8,DN15～DN200
◎ Size range: CLass150～CLass300,PN16～PN50
◎ Pressure level: -196°C~+150°C
◎ Temperature range: Manual, electric, pneumatic, etc.
◎ Application scenarios: LNG, LPG, LNG low temperature conditions and long-distance pipelines such as oil, gas, and natural gas.
The Double Eccentric Butterfly Valve is a is a is a newly developed long-life, energy-saving butterfly valve by our company. It consists of main components such as the valve body, butterfly disc, sealing ring, and transmission mechanism. Its structure is designed based on the two-dimensional or three-dimensional eccentric principle and features a new manufacturing process that accommodates both elastic and multi-layer hard-soft seals. This design reduces torque during operation, achieving energy efficiency and labor-saving benefits. At the same time, it ensures the valve's overall reliability in corrosion resistance, high temperature tolerance, and wear resistance. Common types of hard-sealed butterfly valves include wafer type, lug type, and flanged type butterfly valves.
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.
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.