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, and chemical industries.
◎ Main material: Stainless Steel, Alloy Steel
◎ Size range: NPS1/2～NPS8,DN15～DN200
◎ Pressure level: CLass150～CLass300,PN16～PN50
◎ Temperature range: -196°C~+150°C
◎ Operator: Manual, Pneumatic, Electric, etc...
◎ Application scenarios: LNG, LPG, LNG low temperature conditions and long-distance pipelines such as oil, gas, and natural gas.
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.
It is mainly used in various systems such as petroleum, chemical, metallurgical, pharmaceutical, etc. to transport high viscosity media that solidify at room temperature. The insulation jacket of BJ45W DC jacket insulation globe valve is welded between the two flanges of the valve, and there are two connection ports for the insulation jacket on the side and bottom of the valve. DC insulation globe valve is particularly suitable for pipelines in the chemical and fertilizer industries, and the inclusion of steam in the jacket can prevent the crystallization of the medium. Insulated globe valves are widely used in various systems such as petroleum, chemical, metallurgical, pharmaceutical, etc.
The working principle of the three eccentric butterfly valve is based on its unique structural design, which achieves sealing and flow control functions through three eccentric distances: Structural Design: Three Eccentric Structure: The valve stem axis deviates from the center of the butterfly plate and the body center, and the rotation axis of the valve seat is at an angle to the axis of the valve body channel. This design enables the butterfly plate to form a wedge-shaped space with the valve seat when closed, achieving sealing through friction. Conical Sealing Surface: The periphery of the butterfly plate is machined into an external inclined conical surface, and the valve seat is an internal inclined conical surface, forming an elliptical contact surface. When closed, the butterfly plate achieves sealing through the asymmetric pressing force in the up and down directions, and the sealing becomes tighter as the pressure increases. Working Mechanism: Open State: The butterfly plate is separated from the valve seat, and the fluid passes through the channel; due to the eccentric design, during the opening process, the butterfly plate gradually detaches from the valve seat, reducing friction and operating torque. Closed State: The butterfly plate rotates 90° to contact the valve seat, forming a wedge-shaped space and achieving sealing through torque. Flow Regulation: During the opening rotation of the butterfly plate, the valve's flow area gradually increases, reducing fluid resistance and improving the flow coefficient, achieving flow regulation. Technical Advantages: Sealing Performance: The metal-to-metal hard sealing method can still maintain good sealing performance in high-temperature and high-pressure environments; Low Friction Operation: The eccentric design significantly reduces the operating torque and extends the valve's lifespan; Self-Locking Function: When closed, the butterfly plate becomes tighter under pressure, preventing the phenomenon of over-positioning. This valve is widely used in the petroleum, chemical, and power industries, and common structural connection forms include double flange type, welding type, lug type, and socket type, etc.