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Turning the actuator or the handwheel, the stem will rise along with the disc away from the seat, which allows the material to flow through the valve.
But when you turn the actuator in the opposite direction, the stem will push the disc against the seat. So, it will block the path for materials to flow through.
While the material goes through the valve, the other components are also working for smooth performance. To illustrate, the bellow stretches and folds to keep the material from being carried out around the stem as it moves.
This bellow seal globe valve has a connection that features raised flat rims on both ends called flanges. This makes it easy to install and remove for regular maintenance or repair.
Notable for its unique “Y”-shaped body. As a result, the material may travel more straight across the valve than by the other types. This will help reduce pressure drops because the material does not need to change direction inside the valve.
These globe valves consist of longer bellows than the other types. The expanded bellows increase the valve’s protection from potential hazards such as leaking, particularly for high-temperature and high-pressure applications.
Its bellow seals’ ends are already tightly attached to the stem. So, it had a permanent and strong seal unlike other valves, making them suitable for high temperature and high pressure working environments.
It has a circular aperture at both valve ends where the pipes can be placed directly. This results in an effective, non-leaking connection.
Like other valves, it also has advantages and disadvantages to take note of, such as the following:
| Advantages | Disadvantages |
| Have flexible metal bellows that prevent leakage around the stem, unlike other regular globe valves. | The bellows is another component that can be damaged from different factors, like improper handling. |
| The stem packing will continue to protect the valve from leaking in case the bellows are damaged. This increases the durability of this valve. | It includes more components than other valves, which involve a bellows seal and stem packing. As a result,the amount of components required and the difficulty of installing the valve increase. |
| Its high-quality materials are less vulnerable to corrosion, making them ideal for hazardous materials that are often used in most industries. | Its complex design and high-quality materials make them more expensive to manufacture than other valves. |
How to Choose the Best Bellows Seal Globe Valve Manufacturer?
There’s a lot of factors to consider when choosing the right bellow seal globe valve manufacturer.
Analyse the manufacturer’s experience in the field of creating valves and their product range. Longer experience in manufacturing and having a wide product range will ensure they can meet the customers unique requirements for application.
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