liblikklapid

Liblikklapid, also known as butterfly valves, are a type of quarter-turn valve used to control or isolate flow. They are characterized by a disc mounted on a rotating shaft within the valve body. When the valve is fully open, the disc is rotated 90 degrees so it is parallel to the flow, allowing for minimal obstruction. When the valve is closed, the disc is rotated perpendicular to the flow, blocking the passage.

The name "butterfly valve" comes from the appearance of the disc when it is in the partially open position, resembling a butterfly's wings. These valves are known for their relatively simple design, light weight, and cost-effectiveness, making them popular in many industrial applications. They are suitable for a wide range of fluids, including liquids, gases, and slurries, and can handle both high and low pressures and temperatures, depending on the specific design and materials used.

Operation of a butterfly valve is typically achieved through a lever, gearbox, or actuator. The quarter-turn mechanism allows for quick operation, which can be advantageous in situations where rapid shut-off is required. Common materials for butterfly valves include cast iron, stainless steel, and ductile iron, with various lining materials available to enhance corrosion resistance and compatibility with specific media. Applications range from water treatment and HVAC systems to chemical processing and oil and gas industries.