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Accu-Flo Balancing Valves

With Taco Accu-Flo Balancing Valves, you will experience greater balancing accuracy than ever before. Most conventional balancing valves use a variable orifice that delivers poor balancing accuracy, high pressure drops, low regains, and an inability to read low flows. The Taco Accu-Flo Balancing Valves use a modified venturi design, instead, to deliver four to five times greater accuracy. Flow Measurement is independent of stem and ball position, and the tamper-resistant memory stop provides accurate resetting. With calibrated nameplate for presetting, all-brass interior parts, precision machining and 100% factory testing, these valves are the highest quality fixed-port venturi balancing valve on the market today.

Instruction Sheet
Submittal Data
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Performance Data

Fixed-port venturi balancing valve

Bronze Body ( 1/2”-2”, Sweat and NPT)
Cast Iron Body ( 2-1/2”, 3”, 4”, Flanged)

  • Modified venturi design
  • Blowout-proof stem
  • Ball valve construction
  • Calibrated nameplate for presetting
  • Rated to: 1/2”-2”: 300 PSI, 250°F; 2-1/2”-4”: Class 125
  • Accuracy 4-5 times greater than variable orifice balancing valves
  • Flow measurement independent of stem and ball position
  • Ability to read nameplate setting not required to determine flow
  • Tamper resistant memory stop for accurate resetting
  • Positive shut-off
  • Ability to read low flows
  • Hot Water Heating Systems
  • Closed Cooling Circuits
  • Air Conditioning Systems
  • Hydronic Heating & Cooling
  • Water/Glycol concentrations up to 50%
  • Solar / Geothermal
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