JOHN-VALVE MFG FACTORY CO., LTD.

JOHN-VALVE MFG FACTORY CO., LTD. is a 100% valve manufacturer based in Taiwan since 1981, known for precise machining, high-quality products, and timely delivery. Industries we serve: With over 30 years of experience in valve manufacturing, international certifications, and a high-quality quality control system, our products are widely used in the global market and various projects, such as in the marine and shipbuilding, oil and gas, petrochemical, chemical, food and beverage, pulp and paper industries, etc. Product standard We design: Today, John-Valve exports to over 80 countries worldwide, developing and supplying our valve products according to European EN, ANSI, and JIS standards and custom requirements. As markets evolve and energy awareness increases, John-Valve is also actively developing high-end products that meet the demands of authorities and the market, such as cryogenic ball valves, metal-seated ball valves, hydrogen ball valves, and high-performance valves. Other services: John-Valve not only supplies finished valves and valve packages but also offers an OEM service for valve components, such as stainless steel balls, the heart of ball valves. By grinding and lapping in-house, John-Valve can produce high-quality stainless steel balls with roundness under 0.007 mm and surface roughness below the N3 requirement, metal balls, and seat sets with high sealing quality with leakage rate A. Other custom parts are also welcome! We look forward to any inquiries and requests!