POV provides automated butterfly valves, ball valves and pressure independent valves to the commercial building HVAC market throughout the world. Wherever valve performance is required to maintain climate controlled environments, POV can provide the required automated valves to meet the demanding flow applications of chiller/boiler isolation, air handlers and terminal units for new construction, retrofit certification applications in buildings such as:

• Healthcare
• Data Centers
• Government and Municipal
• Sports/Entertainment/ Convention Centers
• K-12 and University Education
• Transportation
• Hotels
• Office Buildings
• Retail

Valves play a critical role in heating, ventilation, and air conditioning (HVAC) systems, controlling the flow of fluids and gases to maintain optimal temperature, pressure, and humidity levels. These essential components come in various types and configurations, each designed to serve specific functions within the HVAC network. By understanding the different types of valves used in HVAC systems and their unique features, engineers and technicians can optimize system performance, enhance energy efficiency, and ensure the comfort and well-being of building occupants.

One of the most commonly used valves in HVAC systems is the globe valve. Known for its precise flow control capabilities, globe valves feature a spherical body with an internal baffle that allows for accurate regulation of fluid flow. The valve's movable plug can be adjusted to achieve the desired flow rate, making it ideal for applications where precise flow rates are essential for maintaining optimal temperature and humidity conditions.

Another popular valve type for HVAC applications is the butterfly valve. Butterfly valves are designed with a rotating disc that can be turned to control the flow of fluid or gas through the valve. These valves are known for their compact design and relatively low cost, making them a popular choice for regulating flow in larger HVAC systems. Butterfly valves are often used in air handling units and cooling towers, where they help control the circulation of air and water for effective heat exchange.

Ball valves are also widely used in HVAC systems due to their ability to provide a tight shut-off and easy operation. Featuring a spherical closure element with a central hole, ball valves can be quickly opened or closed by rotating the ball, allowing for efficient isolation and flow control within the system. Ball valves are commonly used in applications such as condenser water systems and chilled water systems, where they help manage the flow of cooling fluids.

Gate valves, another common valve type, are particularly useful in HVAC systems for isolating specific sections or equipment. Gate valves utilize a gate that can be raised or lowered to open or close the valve, providing a tight shut-off when required. Although not ideal for flow control due to their design, gate valves are often used in situations where full flow is needed or where isolation is necessary for maintenance purposes.

Pressure relief valves play a vital role in maintaining the safety and efficiency of HVAC systems by protecting equipment from overpressure conditions. These valves automatically release excess pressure if the system pressure exceeds a predetermined set point, preventing potential damage to components such as boilers, compressors, and heat exchangers.

Zone valves are essential for creating separate temperature-controlled zones within an HVAC system, allowing for individualized comfort and energy savings. Typically controlled by thermostats, these valves regulate the flow of heated or cooled fluids to specific areas of a building, enabling occupants to customize the temperature settings according to their preferences.

In conclusion, a wide range of valves is utilized in HVAC systems to efficiently manage the flow of fluids and gases, ensuring optimal temperature, pressure, and humidity levels for building occupants. From globe valves and butterfly valves to ball valves and pressure relief valves, each valve type serves a specific purpose within the overall system. By selecting the appropriate valves for each application, engineers and technicians can optimize HVAC performance, enhance energy efficiency, and maintain a comfortable and healthy indoor environment.