Taco 571-2 3/4inch Zone Valve Sweat

Original price was: $192.87.Current price is: $153.69.

13 in stock

SKU: 39449 Categories: ,


The Taco 571-2 3/4inch Zone Valve Sweat is a popular and reliable choice for controlling water flow in hydronic heating systems. Here’s a breakdown of its key features and functions:


  • Controls water flow to individual zones in a hydronic heating system, directing hot water to specific areas for efficient temperature control.
  • 2-way normally closed valve: closes when no control signal present, preventing water flow to the zone, and opens when activated by a thermostat or other control system.
  • Sweat connections: designed for easy soldering to 3/4-inch copper pipes.

Key Features:

  • Durable construction: built with heavy bronze body for long-lasting performance and reliability.
  • Quiet operation: features an exclusive heat motor design that minimizes noise.
  • Twist-off head: allows for easy servicing and maintenance without disturbing system connections.
  • Manual override lever: enables manual control of water flow even when the system is off.
  • Multiple control options: compatible with automatic control signals (e.g., thermostats) and manual override.
  • Energy efficient: consumes minimal power when open, thanks to the heat motor design.


  • Ideal for radiant heating, baseboard heating, and fan coil systems.
  • Can be used in hot water recirculation systems.

Things to Consider:

  • System compatibility: ensure the valve size and connection type match your existing piping and control system.
  • Normally closed configuration: verify that the normally closed configuration suits your system’s requirements.
  • Professional installation recommended: while DIY installation is possible for experienced individuals, consulting a qualified plumber is recommended for optimal performance and safety, especially for hydronic systems involving electricity.

Overall, the Taco 571-2 3/4inch Zone Valve Sweat is a versatile and reliable option for controlling water flow in hydronic heating systems. Its durability, quiet operation, and convenient features make it a popular choice for residential and light commercial applications.

Additional information

Weight 2.3 lbs


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