Resideo V4043A1705 120V 3/4" NPT 2-Way Normally Closed Zone Valve

The Resideo by Honeywell V4043A1705 is a 120-volt motorized zone valve designed for hydronic heating systems. This 3/4-inch NPT threaded valve provides reliable zone control for residential and light commercial heating applications.

Key Features:

• 2-way normally closed (N.C.) configuration - valve closes when de-energized for safety
• 3/4-inch NPT threaded connections for standard pipe installations
• Flow coefficient (Cv) of 3.5 for efficient water flow
• 120V AC operation compatible with standard HVAC controls
• Motorized actuator with manual opener for system servicing
• End switch for boiler/circulator interlock control
• Removable actuator head for easy valve body replacement

This zone valve is ideal for controlling water flow in individual heating zones, allowing for independent temperature control in different areas. The normally closed design ensures the valve fails in the closed position for system protection. The built-in end switch enables proper sequencing with circulators and boilers in multi-zone hydronic systems.