Bellow Seal Globe valve

Bellows Sealed Globe Valves, or bellows-sealed valves for steam, are specifically designed to control the flow of steam in steam systems, particularly in environments that demand high safety standards and require the prevention of steam or fluid leakage. The standout feature of this type of valve is the use of bellows as a sealing mechanism (seal) instead of traditional seals, such as packing. This design significantly reduces the risk of leakage and enhances the safety of the system.

Functions of Steam Bellows Sealed Globe Valves

1. Steam Flow Control:
   This type of valve is used to control the flow of steam in steam systems. It allows precise adjustment of the opening and closing to achieve the desired flow rate suitable for the operational process.
2. Leak Prevention:
   The use of bellows as a sealing mechanism helps prevent steam or fluid leakage to the outside. This is crucial in systems handling high-temperature and high-pressure steam.
3. Enhanced Safety:
   These valves are ideal for use in systems requiring high safety standards, such as steam systems in power plants, chemical plants, and other industries where steam is used in environments prone to leakage risks.

Structure and Working Principle

1. Bellows:
   A critical component of the valve, made from highly flexible materials such as stainless steel, which can withstand high temperatures and pressures. The bellows act as a seal between the valve stem and the valve body, preventing steam or fluid leakage.
2. Valve Body:
   The part responsible for controlling steam flow, featuring an adjustable opening and closing mechanism operated by the movement of the valve stem.
3. Valve Stem:
   The component connected to a handwheel or actuator, used to control the opening and closing of the valve.
4. Valve Disc:
   The part that opens and closes the steam flow passage, moving up and down with the valve stem.

Benefits of Bellows Sealed Globe Valves

1. Leak Prevention:
   The bellows sealing mechanism reduces the risk of steam or fluid leakage, which is essential in systems handling high-temperature and high-pressure steam.
2. High Temperature and Pressure Resistance:
   The materials used for the bellows and valve body can withstand high temperatures and pressures, making these valves suitable for harsh steam system conditions.
3. Reduced Maintenance:
   Since these valves do not use packing seals, they require less frequent maintenance or seal replacement, lowering long-term maintenance costs.
4. Improved Safety:
   Preventing steam or fluid leakage enhances system safety, reducing the risk of accidents or system damage.

Applications

Bellows Sealed Globe Valves are suitable for use in various steam-related systems, such as:

• Steam systems in power plants
• Industrial heating systems
• Steam systems in chemical plants
• Systems requiring precise and safe steam flow control

Benefits of Bellow Seal Globe valve