Taco Balancing Valves

Fixed-Port Venturi Balancing Valves for Accurate Flow Measurement and Preset Hydronic Balancing

Taco Accu-Flo Balancing Valves are designed to provide accurate flow measurement and balancing in hydronic heating and cooling systems. Unlike many conventional balancing valves that use a variable orifice, Accu-Flo valves use a modified venturi design to improve balancing accuracy, reduce measurement uncertainty, and support more reliable system commissioning.

The fixed-port venturi design allows flow measurement to remain independent of stem and ball position, helping technicians read and verify flow more consistently during startup, troubleshooting, and system balancing. This design also helps address common issues found in traditional balancing valves, such as high pressure drop, low pressure regain, poor low-flow readability, and reduced balancing precision.

Taco Accu-Flo Balancing Valves are built with all-brass interior components, precision machining, and 100% factory testing. A calibrated nameplate supports accurate presetting, while a tamper-resistant memory stop allows the valve to return to the correct setting after shutoff or service. These features make Accu-Flo valves a practical choice for hydronic HVAC systems where accurate flow control, repeatable settings, and dependable commissioning are important.

Features

• Fixed-port venturi balancing valve design
• Modified venturi design supports greater balancing accuracy
• Designed for hydronic heating and cooling system flow balancing
• Flow measurement is independent of stem and ball position
• Helps improve low-flow readability compared to many conventional balancing valves
• Helps reduce common issues related to variable-orifice balancing valves
• Supports accurate system commissioning and troubleshooting
• Calibrated nameplate allows valve presetting
• Tamper-resistant memory stop allows accurate resetting after shutoff or service
• All-brass interior components
  
• recision-machined construction
• Designed for repeatable flow control and dependable system balancing
• Suitable for commercial HVAC and hydronic applications

Applications

• Hydronic heating systems
• Hydronic cooling systems
• Commercial HVAC systems
• Chilled water systems
• Hot water heating loops
• Mechanical room balancing
• Pumped water distribution systems
• System commissioning
• Flow verification and troubleshooting
• Coil and terminal unit balancing
• Building hydronic system optimization