A vane-type inlet device is a component used in gas and liquid handling systems to control the flow of fluids into a process or a machine. The device typically consists of a series of vanes or blades that are positioned at an angle to the direction of flow.

As fluid enters the inlet, the vanes direct it into the desired direction, often by redirecting the flow or creating a swirling motion. This helps to ensure that the fluid enters the process or machine evenly and at a controlled rate, reducing turbulence and minimizing the risk of damage to equipment.

Vane-type inlet devices are commonly used in a wide range of industrial applications, including chemical processing, oil and gas refining, and power generation. They are typically designed to handle high flow rates and withstand harsh operating conditions, such as high temperatures and pressures.