Advantages And Disadvantages Of Pneumatic Goole Valve

Advantages and disadvantages of pneumatic globe valve

advantage

1. Simple structure, convenient manufacturing and maintenance.

Pneumatic globe valve

Pneumatic globe valve

2. Small working stroke and short opening and closing time.

3. Good sealing, small friction between the sealing surfaces, and long life.

4. The structure of the valve body of the pneumatic globe valve includes straight-through, direct-flow and right-angle. The straight-through type is the most common structure, but its fluid resistance is the greatest. Direct flow fluid has low resistance and is mostly used for fluids containing solid particles or high viscosity. Right-angle valve bodies are mostly forged, which is suitable for stop valves with smaller passages and higher pressures.

5. In the process of opening and closing, the friction of the sealing surface is smaller than that of the gate valve, and it is wear-resistant.

6. There is usually only one sealing surface, and the manufacturing process is good, which is convenient for maintenance.

Disadvantage

1. The fluid resistance is large, and the force required for opening and closing is large.

2. It is not suitable for media with particles, high viscosity and easy to coke.

3. Poor adjustment performance.

4. Pneumatic globe valve adopts bellows seal design, which completely eliminates the shortcomings of common valve stem packing seal aging fast and easy to leak, not only improves energy efficiency, increases production equipment safety, and reduces maintenance costs and frequent maintenance. , It also provides a clean and safe working environment.

Use advantages

1. Double sealing design (bellows + packing) If the bellows fails, the stem packing will also be avoided;

2. External leakage, and comply with international sealing standards;

3. There is no fluid loss, reducing energy loss and improving plant equipment safety;

4. Long service life, reducing the number of maintenance and lowering operating costs;

5. The sturdy and durable bellows seal design ensures zero leakage of the valve stem and provides maintenance-free conditions.