Honeywell V8043E1012 3/4"" Hydronic Zone Valve - V8043E1012

The Honeywell Home V8043E1012 Motorized Zone Valve is the time-tested trade standard for localized flow regulation in multi-zone hydronic heating systems. Fabricated with a heavy brass body featuring 3/4" female Sweat threaded connections, this low-voltage 2-way valve controls water loop distribution safely across individual baseboard headers, radiant loops, or terminal fan coils. Driven by a dependable 24V synchronous motor paired with a spring-return mechanism, the valve fails safely to a completely closed position during any localized power interruption.

Key Mechanical & Installation Benefits:

• Integrated Auxiliary End Switch: Outfitted with a built-in micro-switch that registers complete physical port opening. This dry contact instantly closes to complete the low-voltage circuit to start the system circulator pump or fire the boiler control panel.
• Manual Opening Lever Override: Engineered with an accessible external manual slot that allows service technicians to latch the internal valve open during initial system fluid filling, system purging, or electrical troubleshooting.
• High Static Working Pressure Limit: Built to function perfectly under tough hydronic loop dynamics, boasting a maximum static structural system capacity of up to 125 PSI.

Hydronic System Limitations: Intended solely for closed-loop hydronic heating applications or non-potable closed cooling systems. It is not rated for open-loop domestic hot water configurations due to oxygen corrosion factors.