Do Butterfly Valves Need Gaskets?

The butterfly valve, is usually used in the areas of water treatment, chemical processing, and air conditioning systems. At FUJIAN SPARK VALVE CO., LTD., we specialize in manufacturing a wide range of high – quality butterfly valves that meet diverse industrial needs. One question that often comes up among users is whether butterfly valves need gaskets. Let’s dive in and find out.

How Butterfly Valves Function

A butterfly valve typically consists of the body, which is placed between the pipe flanges; the disc, a part that rotates at the center of the pipe and controls the flow; the stem, which connects the disc to the actuator or handle; and the seat, which is the sealing mechanism. When the disc is parallel to the flow, the fluid flows with the least resistance. When the disc is rotated perpendicular to the flow, a seal is generated, that is, the flow is stopped.

Do Butterfly Valves Need Gaskets?

This is not a still or a final “yes” or “no” situation. So many butterfly valves, especially those with soft seals, come along with the valve seals more.  These seals, the material primarily being rubber or EPDM, will suffice the purpose of providing an airtight seal between the valve and the pipeline in most of the cases even without a gasket under ordinary operation.

Nonetheless, there exist situations where a gasket could be required. In instances with large pressure difference or when dealing with highly corrosive media, the use of a gasket can promote the sealing performance. In a chemical processing plant, such as an example, where the media can be highly corrosive, an exotic material based gasket can offer an extra layer of protection to the system and hence the leaks are avoided. Additionally, a butterfly valve’s integrated seals may result in a situation of failure in high-temperature environments, where a gasket can help create a seal effectively.

Types of Butterfly Valves and Gasket Requirements

1. Wafer Gear Type Butterfly Valves: Our D371X – 16Q Wafer Gear Type Butterfly Valves are often chosen by users for their applications. Generally, because of their structural features and the materials employed in their devoted seals, they can be used to work quite smoothly in typical conditions. However, in case the system’s requirements are over what is standard, a gasket can be inserted for a higher performance level.

2. Grooved Type Gear Butterfly Valves: For example, our D381X – 16Q Grooved Type Gear Butterfly Valve is a product that is easy to install. Depending on the structure that contains the seal, there is sometimes an impact on seal wear, and in some cases, especially in those in which one has large – diameter pipes or the liquid is high-powered, the gasket can be used to improve the entire sealing.

3.Handle Grooved Butterfly Valve: Handle Groove Butterfly Valve is the one you should choose for hand operation of the flow rate. Although it is internally designed to seal, there are also places where a more secure seal is required, such as water treatment plants, where gaskets are employed in extreme cases to supplement the existing seal.

Why Select FUJIAN SPARK VALVE CO., LTD.’s Butterfly Valves

The company is ready to meet all the requirements of users, including the offer of a butterfly valve with or without a gasket. We produce butterfly valves of high quality, which are of long life, friendly to the environment, and with good flow control. Our products not only meet the highest standards of their industry but also we are able to tell you whether it is necessary to use the gasket in your particular application.

Conclusion

Conclusively, it may be true that several butterfly valves can run without needing gaskets, though these could vary according to which particular system it is that you want to use them. If you are looking for great butterfly valves,please contact us!