Here’s a list of some of the most well-known, leading global suppliers of vessel outlet valves:

```markdown

Leading Global Suppliers of Vessel Outlet Valves

1. Emerson Electric Co.

   • Renowned for its comprehensive valve solutions and automation technologies.

2. Parker Hannifin Corporation

   • Offers a wide range of high-performance valves used in various applications.

3. Flowserve Corporation

   • Specializes in pumps, valves, and seal systems, known for quality and reliability.

4. Tyco International (now part of Johnson Controls)

   • Provides advanced valve technologies along with fire protection systems.

5. KSB SE & Co. KGaA

   • A global player in pump and valve manufacturing with a strong focus on hydraulics.

6. Crane Co.

   • Known for its diverse valve products used across many industries.

7. AVK Holding A/S

   • A Danish company with a wide range of valve solutions, particularly in water and wastewater sectors.

8. Velan Inc.

   • Offers a variety of valves for various industries including oil and gas, power generation, and more.

9. Zhejiang Y combination Valve Co., Ltd.

   • A manufacturer specializing in various valves including outlet valves for vessels.

10. Hawle GmbH

    • Known for its production of valves and fittings for water supply systems.

```

This list includes companies recognized for their quality and innovation within the valve manufacturing industry. Let me know if you need more specific information about any of these companies or their products!