Honeywell ag13a01a 24V Zone Valve Head End Switch

Product Description

The HONEYWELL ag13a01a is a 24-volt, normally closed (N/C) pop-top zone valve head with end switch terminals, designed for hydronic heating and cooling zoning applications. This valve head mounts directly onto compatible zone valve bodies to control flow in individual heating or cooling zones. The normally closed design ensures the valve defaults to a closed position on power loss, a key safety and energy-conservation characteristic. The integrated end switch terminals allow the valve head to signal the system circulator or boiler when the valve reaches the fully open position, enabling proper sequencing of hydronic system components. Installation is typically performed by licensed plumbers or HVAC technicians working on residential or light commercial hydronic systems.

This zone valve head is used in forced hot water (hydronic) heating systems where multiple zones require independent temperature control. The 24-volt operating voltage makes it compatible with standard low-voltage zone control systems commonly found in residential and light commercial buildings. The pop-top manual override feature allows a technician to manually open the valve during troubleshooting or system commissioning without applying power. Typical installations include baseboard heating loops, radiant floor heating zones, and fan coil unit circuits controlled by individual zone thermostats.

Key Features

• 24-volt operating voltage compatible with standard low-voltage hydronic zone controls
• Normally closed (N/C) design defaults to closed position on power loss
• Pop-top manual override for hands-on troubleshooting and commissioning
• End switch terminals signal circulator or boiler on full valve open
• Designed for use as a zone valve head replacement in hydronic zoning systems

Compatibility

Designed as an OEM-style replacement zone valve head for 24-volt normally closed hydronic zone valve assemblies requiring end switch functionality.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician familiar with hydronic systems. Power down the zone control panel and thermostat circuits before removing or installing the valve head. Ensure the replacement head is fully seated and locked onto the valve body before restoring power. Wiring connections at the end switch terminals should comply with applicable NEC low-voltage wiring requirements.

Technical Specifications

• Operating Voltage: 24 volts
• Valve Action: Normally Closed (N/C)
• Override Type: Pop-Top Manual Override
• End Switch: Yes, terminals included

Standard Information

• Brand: HONEYWELL
• Manufacturer Part Number: ag13a01a