●High temperature and high pressure resistance: Made of high-temperature alloys, heat-resistant steel and other materials, it can withstand high temperature and high pressure differences. The general temperature resistance range is from -196 ℃ to 800 ℃, and the pressure resistance level ranges from PN10 to PN100, or even higher.
●Reliable sealing: The valve seat sealing surface adopts special materials and processing technology, such as metal hard seal or soft seal, to ensure good sealing performance under high temperature and high pressure.
●Wear resistant and erosion resistant: The surfaces of key components such as valve cores and seats are hardened or made of wear-resistant materials, which can resist the erosion and wear of high-temperature and high-pressure fluids.
● Flexible operation: The valve stem transmission part adopts high-temperature resistant materials and self-lubricating structure, ensuring that the valve is easy to operate and flexible to open and close under high temperature and pressure.
●Fire and static electricity prevention: Some high-temperature and high-pressure ball valves have fire and static electricity prevention functions, which can prevent safety accidents caused by fire or static electricity.
◎ Main material: Carbon steel, stainless steel, alloy steel
◎ Size range: D15～DN600,NPS 1/2～NPS24
◎ Pressure level: PN16～PN420,CLass150～CLass2500
◎ Temperature range: -29～800℃
◎ Operator: Manual, Pneumatic, Electric, etc..
◎ Application scenarios: It can be applied to high-temperature and high-pressure working conditions in industries such as petroleum, chemical, natural gas, power, metallurgy, etc., such as petroleum catalytic cracking units, natural gas long-distance pipelines, boiler steam systems, etc.
The Top Entry Cryogenic Floating Ball Valve is a valve suitable for ultra-low temperature environments, mainly used to connect or cut off low-temperature media.
The valve disc of the Cryogenic Swing Check Valve adopts a cantilevered swing structure, combined with precisely machined valve seat sealing surfaces, to achieve rapid response and reliable sealing, effectively preventing the reverse flow of the medium. The overall design of the valve complies with international standards such as BS 6364 and ISO 28921, and is suitable for low-temperature conditions in air separation plants, liquefied natural gas storage and transportation, and the chemical industry.
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.