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Views: 33 Author: Amy Xiong Publish Time: 2024-11-17 Origin: www.wktipvf.com
Resilient seated butterfly valves are another form of industrial butterfly valve, with a seat that has an elastomeric or rubber material, hence can be applied in demanding services. The design allows zero contact of metal to metal which reduces the seal surface wearing hence better long-term performance.The elastomeric seat also makes it more resistant to corrosion and higher temperatures can be withstood without getting deformed. These valves also come as a result of this feature having less need for maintenance since there are no gaskets or flanges involved.
Operation of resilient seated butterfly valves is based on a disc or butterfly-shaped plate that is rotated within the body of the valve to control the flow of fluid. In case of it being open, parallel positioning to the outlet allows for maximum discharge. In case of shut valves, the disc moves perpendicular to the flow path and seals tightly into the seat (resilient) to stop any further discharge.
Resilient seated butterfly valves offer several features that make them advantageous in fluid control applications. Some key features include:
Butterfly valves have many features and benefits because of which they are used in many applications. Among the many advantages is their lightweight construction and easy installation, which allows them to be a low-cost alternative compared to other types of valves. Moreover, since they operate by a quarter-turn action, it means that it can be opened or closed very fast and easily, thus suiting them for system automation. Butterfly valves also have very high-pressure ratings with higher Cv ratings and lower pressure drops compared to other mechanical control valves; this makes them ideal for flow regulation in pipelines where pressure losses are low.
Resilient seated butterfly valves are ideal for higher-demand applications because of the elastomeric seat that eliminates metal-to-metal contact, resiliency to corrosion as well as ability to take higher temperatures without distortion. The fact that these valves do not have any gaskets or bolts also means that they require very minimal maintenance compared to other valves.
Resilient seated butterfly valves find a wide application because of their being versatile. In the food and beverage industry, they are commonly used for flow control as well as pressure and temperature regulation. And also finds its way into industrial pipework systems, chemical manufacturing plants, power generation installations, and waterworks. Besides these general applications, they are further applied in agricultural irrigation systems, wastewater treatment plants, and air conditioning units. The requirement for the application governs the capability of the valve to give a sustained period of consistent service.
In the selection of materials for resilient seated butterfly valves, several factors come into place. The seat material used is to be highly resistant to high temperatures, pressure and corrosion. Besides, any sealant or gasket must prove fit for the application to realize a secure connection. Among the most common materials used for seats are EPDM rubber, nitrile rubber and PTFE. Other elastomeric materials should be considered depending on the needs of the application.
Further, a material for the valve body itself should be chosen so that stainless steel is selected it because resistant to corrosion and durable to enhance maximum life. Finally, the components were also carefully selected as all sealing materials will degrade over time with effect due to wear or tear also due to coming into contact with the process fluid being pumped by the valve or air supply.
