Vacuum Ball Valves

A vacuum ball valve is a type of valve used in vacuum applications for controlling the flow of gases or liquids. As the name suggests, it uses a spherical or "ball" mechanism to control the flow of materials, where the ball has a hole, or port, through the middle of it. When the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked.

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Here are some features and benefits of vacuum ball valves:

1-Full Flow or 'Full Bore' Design: In the open position, the flow path through the middle of the ball is the same size as the pipe, resulting in very low friction loss.

2-Quick Operation: Ball valves are known for their fast start/stop action. This feature is particularly beneficial in vacuum applications where quick isolation is needed.

3-Sealing: Vacuum ball valves typically use elastomer or metal seals to ensure a tight and reliable seal, minimizing leakage and maintaining the vacuum.

4-Material: Like other vacuum valves, vacuum ball valves are typically made of materials like stainless steel, which have a low outgassing rate. This helps to maintain the integrity of the vacuum environment.

5-Versatility: They can be operated manually or automatically (pneumatically or electrically), depending on the specific application and control requirements.

6-Durability: Ball valves are known for their durability and reliable sealing over many cycles, making them suitable for many vacuum applications.

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It's important to note that while ball valves are very effective for many applications, they're not suitable for all. For instance, they are not typically used in applications requiring fine control of flow. For such applications, other types of valves, like needle valves or proportional-control valves, may be more suitable.