feature
1. Special cryogenic structure and material design: adopting a 90 ° angle valve body structure, optimizing pipeline layout, and reducing the installation of elbows; The valve body is made of forged austenitic stainless steel or low-temperature alloy steel, which undergoes cryogenic treatment to ensure excellent toughness even in ultra-low temperature environments of -196 ℃ and below, completely avoiding the risk of low-temperature brittle fracture.
2. Reliable cryogenic sealing system: The sealing surfaces of the valve disc and seat are made of cobalt based hard alloys (such as Stellite) or reinforced stainless steel materials, which are precisely ground and matched; Combined with elastic load sealing design, it compensates for low-temperature shrinkage deformation and achieves zero leakage sealing under extreme temperature alternating conditions.
3. Effective cooling isolation design: adopting an elongated valve cover structure, significantly increasing the distance between the valve stem and the low-temperature flow channel, effectively blocking the conduction of cooling to the packing box and actuator, preventing external frosting and freezing, and ensuring stable operation of the operating mechanism at room temperature.
4. High pressure compact connection method: using socket welding connection interface, achieving permanent integrated connection with the pipeline through full penetration groove welding, with absolutely reliable sealing, high strength, and few leakage points, especially suitable for high-pressure, high-risk and low-temperature medium pipeline systems.
5. Suitable for ultra-low temperature harsh media: specially designed for liquefied natural gas (LNG), liquid oxygen, liquid nitrogen, liquid argon, liquid ethylene and other media, with materials and structures that meet cryogenic standards, suitable for key fields such as air separation, LNG receiving stations, low-temperature storage and transportation, and specialty chemicals.
6. Stable operation and flexible configuration: The valve stem adopts a lifting and non rotating design, with small opening and closing torque and smooth action; The standard configuration is manual operation (with an extended handwheel for easy operation outside the insulation layer), and optional pneumatic and electric actuators can be equipped to achieve remote automation control and precise adjustment.