Pneumatic low-temperature regulating valve is a reliable guardian in the field of low-temperature fluid control

2025-06-03

Pneumatic low-temperature regulating valve is a reliable guardian in the field of low-temperature fluid control, powered by compressed air, specially designed for the transportation and regulation of cryogenic media such as -196 ℃ liquid nitrogen and LNG. This valve uses a pneumatic actuator to receive a 4-20mA standard signal, and accurately converts air pressure into valve core displacement through a locator. The response speed is less than 1 second, and the adjustment accuracy reaches ± 1%, achieving fast and stable control of flow and pressure. The valve body is made of 304L/316L stainless steel or nickel based alloy that has undergone cryogenic treatment, and can withstand extreme low temperature impact without brittle fracture; The sealing components are made of polytetrafluoroethylene (PTFE) or special rubber materials with excellent low-temperature performance, combined with a double sealing structure to ensure zero leakage. The design of the extended valve stem and insulation sleeve effectively isolates low-temperature conduction and avoids freezing damage to the actuator; Pneumatic drive has inherent explosion-proof characteristics and is suitable for low-temperature hazardous environments that are flammable and explosive. With the advantages of stability, reliability, and convenient maintenance, pneumatic low-temperature regulating valves are widely used in LNG receiving stations, air separation units, and other scenarios, building a solid barrier for the safe and efficient operation of low-temperature industrial processes.

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