When selecting HVAC balancing valves, you first need to distinguish between two main categories: static balancing valves and dynamic balancing valves (PICV). Choosing according to actual application needs ensures proper selection.
Static balancing valves are mainly used for building risers, floor main pipes and main pipe networks. They manually regulate and lock the flow rate to achieve the overall hydraulic balance of the HVAC system. Featuring durable construction and cost performance, they are widely applied in residential heating and ordinary building pipe networks.
Dynamic balancing valves and integrated PICV dynamic balancing electric valves are more suitable for terminal units such as hotel guest rooms and office fan coil units. They maintain automatic pressure stabilization unaffected by equipment start-ups or shutdowns on other floors, delivering consistent temperature control. They are the preferred solution for high-star hotels, commercial complexes and coastal resort projects.
In selection, first match the standard pipe diameter to common specifications ranging from DN15 to DN50 to ensure compatibility with on-site pipelines. For pressure rating, PN16 is sufficient for most engineering requirements. For high-rise buildings and special high-pressure pipe networks, it is necessary to additionally verify the pressure resistance and the valve body’s structural strength.
Valve body material is also critical. Brass valve bodies suit most hotel and civilian HVAC projects with balanced cost performance and stability. Ductile iron is commonly used for large-diameter main pipe networks. For coastal areas with high salt fog and humidity, corrosion-resistant valve bodies are highly recommended to extend service life and enhance anti-corrosion performance.
In terms of application scenarios, high-star hotels and coastal resorts are advised to adopt a complete solution combining static balancing valves with PICV dynamic balancing valves, taking into account both pipe network balance and terminal constant temperature performance, while complying with ISO9001 and EN215 certification standards to meet international engineering requirements.
In office buildings and commercial complexes, static balancing valves are installed on risers, while PICV valves are configured for indoor fan-coil terminals. For residential heating, economical static and manual balancing valves are adequate.