Taco ACUF-250-AF - Accu-Flo Balancing Valve - 2-1/2" Flange

The Taco Accu-Flo Flanged Balancing Valve is designed for larger hydronic systems that demand high flow capacity with precise control. With a cast iron body, TFE internals, and Class 125 flanges, it brings durability and flow measurement performance to commercial applications like chillers, boilers, and district systems.

Its modified Venturi section allows for dependable flow readings even at low rates, and installation is straightforward thanks to the integrated Schrader pressure port. From commissioning to long-term performance, the Accu-Flo is engineered to reduce pressure drop and improve system efficiency.

Features

• Flanged cast iron body for large-diameter piping systems
• Fixed-port Venturi design—superior flow accuracy, no flow charts needed
• Flow measurement unaffected by stem or ball position
• Schrader pressure port for dual-readout gauge attachment
• Class 125 rating (2½" to 4" sizes)
• Positive shut-off capability for easy maintenance
• Tamper-resistant memory stop and calibrated nameplate
• Internal components rated to 250°F
• Cv range: 122 to 444, depending on size
• Available in 2½", 3", and 4" sizes

Applications

• Large hydronic heating and cooling systems
• Chillers, boilers, and large air handlers
• Balancing in central plant or high-load zones
• Commercial commissioning and energy optimization work

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