The metal bellows globe valve is a type of valve integrated into pipelines to control fluid flow, offering high sealing reliability. In these valves, sealing is achieved through the bellows structure, completely isolating the fluid from the external environment. This ensures safe operating conditions, particularly in systems transporting hazardous gases or chemicals.
The bellows, made of multi-layered metal, is integrated into the valve body, allowing the moving parts to operate in a leak-free manner. The areas in contact with the fluid during operation are resistant to high temperatures, chemicals, and wear. As a result, the valve’s service life is extended, and maintenance requirements are minimized.
Where Are Metal Bellows Globe Valves Used?
This type of valve is widely used in industrial applications where sealing requirements are critical. It is especially preferred in refineries, petrochemical plants, and chemical process lines. It can be safely applied in systems handling steam, heat transfer oils, and hazardous gases.
They are also commonly used in power plants, heating lines, and inert gas distribution systems. In areas with hazardous environments, this type of valve plays a critical role in ensuring environmental and personnel safety.
What Are the Technical Specifications?
Metal bellows globe valves contribute to system performance thanks to their technical features. They are generally manufactured with the following characteristics:
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Body Material: Stainless steel, cast steel, or carbon steel
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Bellows Material: 316L Stainless Steel
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Gasket: PTFE, graphite, or metallic sealing
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Connection Type: Flanged (in accordance with DIN and ANSI standards)
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Pressure Rating: PN16, PN25, PN40
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Temperature Range: -20°C to +450°C
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Operating Principle: Can be controlled manually, pneumatically, or with an electric actuator.
Each valve is put into service only after undergoing leak tests and performance checks.
Why Are Metal Bellows Globe Valves Preferred?
Metal bellows globe valves maximize system safety thanks to their double-sealing design. The full tightness provided by the bellows structure prevents the release of hazardous gases into the environment, reducing environmental impact and offering significant benefits for worker safety.
Additionally, the bellows technology extends the valve’s maintenance interval and reduces maintenance frequency. System downtime is minimized, ensuring continuity of production. Made from materials with high chemical resistance, the valve can operate reliably even in harsh environments.
Thanks to easy installation and compliance with standards, it can be quickly integrated into many different lines.
For More Information and Orders
For detailed information on metal bellows globe valves and to access technical documentation, you can visit the Unox Valve Category.
Additionally, different valve models can be explored in detail through the Unox Online Product Catalog.
Metal Bellows Globe Valve
