Venturi Valve: What You Need to Know

Quick Summary: Venturi valves are hourglass-shaped tubes with a movable internal cone that regulates flow based on pressure changes. Common in HVAC systems, these valves independently control airflow and are available in constant or actuated designs, offering quick response times and energy efficiency for various industrial applications.

What Is a Venturi Valve?

A venturi valve is an hourglass-shaped tube, with either end of the valve having a wider diameter than the narrowed center. Inside the valve is a cone that moves parallel to the body of the valve. As pressure within the valve changes, the cone moves forward or backward to modify flow rates through the valve assembly. 

Venturi valves are specifically designed to provide flow regulation in response to pressure changes. HVAC ducts use venturi valves as airflow control valves to regulate and maintain airflow through the system. Unlike other methods, the venturi valve independently regulates airflow in response to changes in static pressure, without the need for communication between system components. The independence and fine control offered by venturi valves makes them ideal for maintaining both constant and variable airflow based on external conditions.

Venturi Valve Options

Venturi valves are available in a variety of factory-programmed calibrations to meet the specific requirements of numerous applications. They can be composed of a wide range of materials, including aluminum and steel, and are often treated or coated to enhance strength, chemical resistance, and corrosion resistance. Thermal insulation can also be added to the valve to reduce thermal loss and increase energy savings. Numerous valve flow designs are available depending on the needs of your application. 

Constant and actuated valves are the two most common venturi valve designs. Constant volume venturi valves are engineered to provide a steady flow of air or fluid through the valve, regardless of duct pressure fluctuations. They are best suited for outdoor airflow regulation, ventilated cabinets, and biological safety cabinets. Actuated valves are typically used in dynamic systems where quick valve operation is critical. They use a cone situated on top of a shaft to restrict the flow of air through the valve opening to ensure consistent control. 

Advantages of Venturi Valves

Venturi valves offer a variety of benefits for a wide range of applications and industries, including hospitals, universities, biological safety cabinets, and laboratories. They are incorporated into ventilation and HVAC systems to provide consistent, accurate control of pressure, temperature, and airflow.

Venturi valves are highly sensitive and operate independently, making them quick to respond and reducing the need for extensive room pressurization testing. They react extremely quickly to signals, making them perfect for sensitive operations in labs and ventilated cabinets. 

Some venturi valve designs incorporate full shutoffs, which will keep the valve closed when not in operation in order to save energy. This energy efficiency is compounded by thermal insulation, which reduces thermal loss. 

Why Partner with Metal Craft Spinning and Stamping?

Metal Craft Spinning and Stamping is a premier manufacturer of quality HVAC system components, including venturi valves. Our state-of-the-art metal spinning manufacturing process allows us to create highly durable, long-lasting components that can withstand even the most extreme operating conditions. We are pleased to offer venturi valves in a wide range of materials, including aluminum, cold-rolled steel, and stainless steel, and we are capable of providing custom manufactured valves in a wide range of sizes. 

In addition to our exceptional metal spinning techniques, we use laser cutting technology to enhance your product quality. Using cutting-edge laser technology, we ensure highly accurate, symmetrical fan housings for optimal valve operation. With decades of experience, we understand the unique complexity of venturi valves, and we ensure highly effective, durable designs based on customer requirements and specifications.

Contact the Experts at Metal Craft Spinning and Stamping

Since 1964, Metal Craft Spinning and Stamping has been pleased to offer a wide range of metal manufacturing services, including metal stamping and spinning, and engineering. We pride ourselves on producing quality products and components for customers in every industry, from architecture and industrial installations to HVAC systems, lighting fixtures, and even furniture. To learn more about our venturi valves and other products and services, contact us today or request a quote to start your order.