Honeywell 1311-103 Zone Valve 1 Inch 24V 3-wire

Product Description

The HONEYWELL 1311-103 is a 1-inch, 24-volt, 3-wire zone valve with sweat (solder) end connections, designed for hydronic heating and cooling distribution systems. Zone valves of this type open and close to direct hot or chilled water flow to individual zones, allowing independent temperature control in multi-zone residential and light commercial systems. Licensed HVAC technicians and plumbers install this valve as part of a zone control setup paired with a zone panel or thermostat. The 3-wire configuration provides end-switch feedback to signal the zone panel or boiler control when the valve has fully opened.

This valve is suited for residential and light commercial hydronic systems where zoned water distribution is required. Typical applications include baseboard hot-water heating, fan coil systems, and radiant floor heating loops. The sweat connection style requires standard copper tubing and soldering, making it a familiar fit for plumbing and HVAC technicians working on forced-hot-water or chilled-water systems. It operates on 24-volt control circuits, compatible with standard low-voltage thermostats and zone panels.

Key Features

• 1-inch sweat (solder) end connections for copper pipe installations
• 24-volt, 3-wire operation with end-switch feedback for zone panel or boiler integration
• Designed for zoned hydronic heating and cooling distribution
• Low-voltage control circuit compatible with standard thermostats and zone controls
• Compact actuator design suitable for tight mechanical room installations

Compatibility

Designed as an OEM-style replacement zone valve for residential and light commercial hydronic heating and cooling systems using 1-inch copper piping and 24-volt low-voltage control wiring.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber. Shut off system water supply and de-energize the 24-volt control circuit before beginning work. Sweat connections require proper flux, solder, and torch technique on clean copper pipe ends — allow all joints to cool completely before restoring power or water flow. Follow applicable local mechanical codes and manufacturer wiring diagrams when connecting the 3-wire end-switch circuit to the zone panel.

Technical Specifications

• Connection Size: 1 inch
• Connection Type: Sweat (Solder)
• Voltage: 24 volts
• Wiring Configuration: 3-Wire with End Switch

Standard Information

• Brand: HONEYWELL
• Manufacturer Part Number: 1311-103