puolikuuventtiiliä

Puolikuuventtiiliä, also known as a half-moon valve or crescent valve, is a type of valve primarily used in plumbing and fluid control systems. Its defining characteristic is its semi-circular or crescent-shaped sealing element. This shape allows for a smooth transition in flow as the valve operates, typically by rotating.

The operation of a puolikuuventtiiliä involves the rotation of the crescent-shaped plug within a cylindrical body. When the flat side of the crescent is aligned with the flow path, the valve is open, allowing fluid to pass freely. As the plug is rotated, the curved side gradually obstructs the flow, leading to throttling or complete closure. This mechanism distinguishes it from ball valves or gate valves, which have different sealing geometries.

Puolikuuventtiiliä are often found in applications where precise flow control is not the primary requirement but where a simple, robust shut-off mechanism is needed. They can be used for both liquids and gases. Their design can offer good resistance to clogging, making them suitable for fluids containing some solids. The simplicity of their construction contributes to their reliability and relatively low maintenance needs. While not as common as some other valve types, they occupy a niche in specific industrial and domestic plumbing scenarios.