Bellows are a flexible, airtight element typically made from metal or elastomers. They function like a collapsible container that can expand and contract under pressure. In valves, bellows are often used as a seal or isolation element.

Features:

• Flexibility and Collapsibility: Bellows can expand and contract under pressure, allowing for movement and actuation within a valve.
• Sealing Capability: Bellows can create a tight seal within a valve, isolating fluid flow from the environment or other parts of the valve.
• Protects Internal Components: By isolating the working fluid, bellows can protect the internal components of the valve from contamination or corrosion.
• Can Be Made From Different Materials: Depending on the application, bellows can be made from various materials like metal (stainless steel), rubber, or synthetic elastomers, each offering specific characteristics.