Magpie Valve (https://www.magpievalves.com/) is a research-driven manufacturer specializing in industrial valves, packing, gaskets, and seal kits. Our focus lies in advancing valve technology through material science, precision engineering, and independently verified performance testing. We aim to redefine the function and reliability of industrial valves by addressing the core element that determines their performance—sealing integrity. While large-scale machining is well established in China’s valve industry, Magpie Valve concentrates on the next frontier: understanding the mechanical behavior of non-metallic materials, improving surface coatings for sealing components, and studying friction and wear mechanisms that directly impact valve performance and service life.




Our multidisciplinary team—comprising nuclear-grade sealing engineers, valve specialists, materials scientists, and electromechanical engineers—integrates deep theoretical knowledge with extensive practical experience. Collaborating with leading research institutions such as Lanzhou University of Technology’s National Key Friction Laboratory, Ningbo Institute of Materials, East China University of Science and Technology, and the Shanghai Institute of Ceramics, we have carried out comprehensive studies on low-leakage graphite sealing systems and systematically addressed the root causes of sealing failure.




Magpie Valve’s products are backed by rigorous testing and authoritative third-party certification, including API 622, API 624, API 641, ISO 15848-1, TA-LUFT, and ISO 15848-1 CC3. Nearly 500 valve models—ranging from gate and globe valves to ball valves—have been validated under extreme conditions from 400°C to -196°C and up to Class 2500 LB pressure. Through these efforts, Magpie Valve not only meets but often exceeds international standards, setting new industry benchmarks for reliability, safety, and innovation in modern valve engineering.