A Venturi valve is a type of flow control device that is used to regulate the flow of a fluid or gas. It works by using the Bernoulli principle, which states that when the velocity of a fluid increases, its pressure decreases. The Venturi valve works by creating a constriction in the flow of the fluid, which causes the pressure to drop and the velocity to increase. This causes the fluid to flow faster through the valve, allowing for precise control of the flow rate. The Venturi valve is often used in industrial applications such as water filtration systems, HVAC systems, and pumps. It is also used in medical applications such as intravenous (IV) drug delivery systems. The Venturi valve is an effective and efficient way to control the flow of a fluid or gas, and is a key component in many industrial and medical applications.