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Butterfly valves are essential components used in a variety of industries for controlling the flow of fluids. One of the trending modifications in butterfly valves is the increase in eccentricity. Eccentricity refers to the offset that exists between the center of the disc and the valve stem. This feature has become increasingly popular due to a range of benefits it provides. Here are some reasons why the eccentricity of butterfly valves is increasing:

Improved Flow Control

Eccentricity plays a crucial role in improving the flow control of butterfly valves. By positioning the disc off-center, the valve can open and close much quicker and with more precision, offering better flow control. This feature is particularly helpful in applications that demand rapid changes in fluid flow rates.

Reduced Wear and Tear

When a conventional butterfly valve is used to control the flow rate of a fluid, the disc rubs against the seat. Over time, this repetitive rubbing can lead to wear and tear, reducing the valve's lifespan. By allowing the disc to lift away from the seat, eccentricity reduces the amount of abrasion that occurs, increasing the valve's longevity.

Lower Maintenance Costs

Because eccentricity reduces wear and tear, it reduces the maintenance required. This aspect benefits industries where valves are subjected to harsh conditions or subject to frequent usage.

Improved Seal

Butterfly valves must maintain a tight seal to prevent any leaks, which can be dangerous in certain applications. By exploiting the eccentricity feature, the valve can achieve a more robust seal between the disc and seat. This improves the valve's ability to contain fluids, protect equipment, and prevent environmental pollution.

In conclusion, the increase in eccentricity of butterfly valves has become a popular modification due to the numerous benefits it offers. From improved flow control to improved seals, the advantages of using eccentric butterfly valves far outweigh the conventional ones.