Perhosventtiilien

Perhosventtiilien, commonly known as butterfly valves, are a type of quarter-turn valve used to regulate or isolate flow. They consist of a disc mounted on a rod. When the valve is open, the disc is rotated 90 degrees to allow fluid to pass through. When the valve is closed, the disc is rotated back to its position perpendicular to the flow, obstructing the passage.

These valves are characterized by their simple design, which makes them relatively inexpensive to manufacture and maintain. Their compact size and light weight also contribute to their popularity, especially in applications where space is limited. Perhosventtiilien are suitable for a wide range of applications, including water supply, wastewater treatment, chemical processing, and HVAC systems.

The operation of a butterfly valve is straightforward. A lever, gearbox, or actuator is used to turn the stem, which in turn rotates the disc. The degree of opening of the disc determines the amount of flow through the valve. While they are effective for on-off applications and throttling, precise flow control can be challenging with standard designs.

Perhosventtiilien are available in various materials, such as cast iron, stainless steel, and plastics, to suit different fluid types and operating conditions. The sealing mechanism typically involves a resilient seat that compresses around the disc when the valve is closed, creating a tight seal. High-performance butterfly valves may incorporate metal seats for higher temperature or pressure applications. Their ease of operation and cost-effectiveness make them a widely adopted valve type across many industries.