As for the top ten companies selling directly from first-line brand manufacturers in valve production, here are some internationally renowned valve manufacturers. These companies not only produce high-quality valve products, but also provide direct sales services. Please note that this ranking is not absolute and is for reference only:
1. Emerson: Founded in 1890, Emerson is the world's leading manufacturer of industrial automation and process control.
2. Honeywell: Founded in 1906, Honeywell is a world-renowned high-tech and manufacturing company that provides a variety of industrial control products, including valves.
3. Siemens: Founded in 1847, Germany's Siemens is one of the world's largest engineering technology companies, providing a variety of industrial automation and process control products.
4. ABB: Founded in 1988, Swiss ABB is the world's leading industrial automation and power technology company, providing a variety of industrial control products.
5. Schneider Electric: Founded in 1972, French Schneider Electric is the world's leading industrial automation and energy management company, providing a variety of industrial control products.
6. Finland’s Valmet: Founded in 1969, Finland’s Valmet is the world’s leading automation and process control company in the pulp and paper industry.
7. Yokogawa: Founded in 1915, Yokogawa is the world's leading industrial automation and process control company, providing a variety of industrial control products.
8. Festo: Founded in 1925, the German Festo company is the world's leading pneumatic technology and industrial automation company, providing a variety of industrial control products.
9. South Korea HISAKA: Founded in 1953, South Korea HISAKA is a leading valve manufacturer in South Korea, providing a variety of high-quality valve products.
10. Shanghai People's Electrical Appliance Factory, China: Founded in 1996, Shanghai People's Electrical Appliance Factory, China, is one of the leading valve manufacturers in China, providing a variety of high-quality valve products.
These companies have a high reputation around the world and provide quality products and services. However, when choosing the right valve manufacturer, it is important to consider your specific needs, budget, and project size to ensure you find the best solution for you.