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i Series® Mixing Valves

Taco iSeries® Mixing Valves provide precise and cost-effective temperature control for your heating systems, the flexibility of zone-to-zone control, plus built-in boiler protection.


  • Available in 2-way, 3-way or 4-way injection configurations
  • For either outdoor reset control or fixed water supply temperature applications
  • Protects boiler against flue gas condensation

  • Operates Off Constant Power or Relay End Switch
  • Ball Valve Design, High Cv
  • Manual Operation Button
  • Solid-State Microprocessor Design
  • Easy, One-Hand Actuator Removal
  • Multi-Status LED Indicator Light

Video: The i Series Mixing Valve

Video: The i Series Mixing Valve - Outdoor Reset

iValve video
Learn about the iValve in this short video.