Magpie Valve Packing Gasket Co., Ltd

As a leading manufacturer of industrial valves, packing, gasket, and seal kits, Magpie Valve ( ) is a research-driven enterprise dedicated to advancing valve technology through deep material science, precision engineering, and third-party-verified performance. Our mission is to redefine the role of valves in industrial applications by focusing on the fundamental elements that determine their reliability—particularly sealing performance. Recognizing that large-scale machining is no longer the main challenge in China’s valve industry, we have prioritized the mechanical behavior of non-metallic materials, advanced coating techniques for sealing components, and the study of friction and wear mechanisms. These areas, often overlooked, are the true bottlenecks in achieving high-performance valves.

Our team is composed of nuclear-grade sealing engineers, valve specialists, materials scientists, and electromechanical engineers. Together, we combine academic insight with industrial expertise to deliver high-integrity valve solutions. We have conducted extensive research in collaboration with 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. These partnerships have enabled us to perform in-depth analysis of low-leakage graphite sealing technologies and systematically resolve the root causes of sealing failure.

Backed by rigorous testing and authoritative third-party validation, Magpie Valve holds multiple industry-recognized certifications, including API 622, API 624, API 641, ISO 15848-1, TA-LUFT, and ISO 15848-1 CC3. We have tested nearly 500 valve products—from gate and globe valves to ball valves—under extreme temperature conditions ranging from 400°C to -196°C and pressures up to Class 2500 LB. Through these efforts, we not only ensure compliance with international standards but also set new benchmarks for reliability, safety, and innovation in the valve manufacturing sector.