Butterfly valves provide an efficient method of closing fluids on and off, and are the successor to traditional gate valve technology, which is heavy, difficult to install, and does not provide the tight shut-off performance needed to prevent leakage and increase productivity. The earliest use of butterfly valves dates back to the late 18th century and was improved in the 50s of the 20th century to a smaller, lighter design that effectively solved leakage problems.
Emerson’s Keystone brand developed the elastomer seat butterfly valve series in the 50th century of the 20th century, with a more compact, lighter design to meet the needs of users to meet leakage and safety challenges. Elastic valve butterfly valve is mainly used to replace gate valves in low pressure and low temperature environments, such as factory utilities, building HVAC and other industrial industries that require bubble-level sealing. It is rubber-lined and centered, meaning that the disc and stem are located in the center of the valve body and piping. The valve plate rotates 90º to complete the stroke from full closed to full open and can be used with manual, electric and pneumatic actuators. The actuator controls the valve plate action to limit or allow the flow of fluid through the pipe, and the user can adjust the flow of the pipe medium through the control system.
With the continuous development of rubber-lined elastic seat butterfly valve, its application field has been further expanded. End users can use it for warmer, more corrosive applications, such as mildly corrosive environments, food and beverage, and hot air applications.
In order to cope with today’s sustainable development policies, reduce dependence on metal raw materials, and at the same time be lightweight and can be applied in corrosion-resistant applications, such as construction equipment, transport and cargo containers, plastic or fiberglass pipelines, as well as purification, ozone or demineralization treatment.
New market challenges
One of the challenges facing customers using butterfly valves today is the compatibility of the materials used with the application conditions. To meet this challenge, valve manufacturers are increasingly adopting new advanced technologies in the coating of valve bodies and discs, enabling them to be used in aggressive media.
Butterfly valves are not recommended for applications requiring a large pressure drop. In addition, because the butterfly valve plate is located in the flow channel, it cannot be used in applications that require straight-through pipe valves. They are suitable for conditioning but not for those requiring minimal adjustment.
We are still working on it
Emerson butterfly valve technology research and development steps do not stop, including the use of new materials and industry standards updated, safety and leakage prevention are its main drivers. End users benefit from a safer, longer life cycle at a lower cost.
Post time: Mar-23-2023
