1" 2-Way Hydronic Zone Valve, 7 Cv, 24 VAC

Taco 572-4 1" Sweat Zone Valve – 24V Heat Motor, Normally Closed

The Taco 572-4 is a 1" two-way zone valve designed for use in closed-loop hydronic heating systems. This model is part of Taco’s 570 Gold Series and is equipped with a heat motor actuator for consistent, low-noise performance. It opens automatically when energized and closes via return spring when power is removed.

Suitable for zoning applications in residential or light commercial hydronic systems, the valve features a twist-off actuator for field servicing, along with a manual lever for system purging and override during maintenance. The valve body is made from bronze and designed for sweat connections to standard copper tubing.

Product Features

• Connection Size: 1" sweat (solder) inlet/outlet
• Valve Type: 2-way, normally closed
• Control Voltage: 24 VAC, 60 Hz
• Flow Coefficient (Cv): 7.0
• Maximum Operating Pressure: 300 PSI
• Maximum Fluid Temperature: 240°F
• Actuator: Heat motor with mechanical return; twist-off head for easy replacement

Additional Details

• Body Material: Bronze
• Manual Lever: Integrated lever for manual open during fill or purge operations
• Serviceability: Actuator head can be replaced without draining the system
• Factory Testing: Each valve is 100% pressure and function tested prior to shipment

Installation Notes

The Taco 572-4 should be installed with the flow direction matching the arrow cast into the valve body. Soldering must be performed with the actuator removed to prevent damage. Power wiring should comply with NEC and local electrical codes. Compatible with most 24V thermostats and zone control panels.

Contractor Use

This valve is commonly used in multi-zone systems, including baseboard, panel radiator, and radiant floor heating loops. Its reliable operation and replaceable actuator design make it ideal for long-term serviceability in both retrofit and new construction applications.