Emerson QT050C2 2-way Zone Valve 1/2 in Sweat 24V

Product Description

The EMERSON QT050C2 is a 2-way, motorized hydronic zone valve designed for 1/2 inch copper sweat piping systems operating on 24 volt low-voltage control circuits. The valve features a built-in end switch that sends a signal to boilers or circulators when the valve reaches the fully open position, enabling straightforward integration with multi-zone relay panels. The brass housing supports water and water-glycol media, and the motorized actuator delivers smooth open-close operation under typical hydronic zone pressures. Licensed plumbers and HVAC technicians install this valve in residential and light commercial hot water heating systems.

This zone valve is suited for residential and light commercial hydronic heating applications where independent zone control is required. It is installed in 1/2 inch copper sweat piping runs and wired into low-voltage zone control panels or relay boards. The end switch output simplifies multi-zone wiring by directly enabling boiler or circulator operation when the zone calls for heat. It handles water or water-glycol heat transfer media, making it appropriate for systems with freeze protection requirements.

Key Features

• 2-way motorized actuator provides reliable open-close zone isolation in hydronic systems
• Built-in end switch signals boiler or circulator when valve reaches full open position
• 1/2 inch sweat connection compatible with standard copper piping
• 24 volt low-voltage control simplifies integration with standard zone relay panels
• Brass housing supports both water and water-glycol heat transfer media

Compatibility

Designed as an OEM-style replacement or new-installation zone valve for residential and light commercial hydronic heating systems using 1/2 inch copper sweat piping and 24 volt zone control circuits.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician in accordance with local mechanical codes and the system manufacturer guidelines. Before soldering, remove the actuator from the valve body to prevent heat damage to internal components. Confirm 24 volt power compatibility at the zone panel before wiring the end switch circuit. Shut down the hydronic system and relieve pressure before cutting into any piping.

Technical Specifications

• Valve Type: 2-Way Zone Valve
• Connection Type: 1/2 inch Sweat (Copper)
• Control Voltage: 24 volts
• Actuator Type: Motorized Open-Close
• End Switch: Included
• Housing Material: Brass
• Compatible Media: Water, Water-Glycol

Standard Information

• Brand: EMERSON
• Manufacturer Part Number: QT050C2