Resideo V8043G1125 Zone Valve
The Resideo V8043G1125 is a professional-grade Normally Closed zone valve engineered for hydronic heating systems requiring reliable zone control. This motor-actuated valve features a 1/2" Inverted Flare connection and operates on a standard 24 Vac power supply. Designed with a 3.5 Cv flow capacity, it provides efficient fluid movement while maintaining a 20 PSI maximum differential pressure for positive close-off. The internal spring return mechanism ensures the valve defaults to the closed position during power loss, while the manual opener lever allows for system filling and troubleshooting without electrical power. For seamless integration into boiler control circuits, the built-in SPST auxiliary switch provides an end-switch closure to signal the circulator pump or burner. With a 15-second nominal opening time and 18-inch lead wires, this low voltage zone valve is the industry standard for hydronic radiant heating and baseboard applications demanding long-term durability and precise flow regulation.
Key Benefits for Contractors
- Efficient Flow Control: The 3.5 Cv rating ensures optimal flow rates for residential and light commercial hydronic zones.
- Integrated End Switch: The normally open auxiliary switch simplifies wiring by providing a direct signal to start the boiler or pump once the valve is fully open.
- Fail-Safe Operation: Mechanical spring return to close functionality prevents unintended heating during power failures.
- Simplified Maintenance: The manual opener allows technicians to bypass the actuator for system air purging or emergency operation.
- Compact Connectivity: 1/2 inch inverted flare fittings provide a secure, leak-resistant connection in tight mechanical spaces.
Common Installation & Technical Questions
Can the actuator head be replaced without draining the system?
Yes, the Resideo V8043G1125 is designed with a replaceable motor and powerhead assembly, allowing for service without breaking the hydronic seal.
What is the purpose of the 18-lead wires on this model?
The leads provide ample length for direct connection to a 24V transformer and the end-switch circuit, reducing the need for additional field-installed jumpers.
Does this valve support high-head pressure circulators?
This valve is rated for a 20 PSI close-off pressure; ensure your pump's head pressure does not exceed this limit to prevent "ghost flow" or hammer through the seat.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $136.05
-65%$136.05
$47.62Resideo V8043G1125 Zone Valve
The Resideo V8043G1125 is a professional-grade Normally Closed zone valve engineered for hydronic heating systems requiring reliable zone control. This motor-actuated valve features a 1/2" Inverted Flare connection and operates on a standard 24 Vac power supply. Designed with a 3.5 Cv flow capacity, it provides efficient fluid movement while maintaining a 20 PSI maximum differential pressure for positive close-off. The internal spring return mechanism ensures the valve defaults to the closed position during power loss, while the manual opener lever allows for system filling and troubleshooting without electrical power. For seamless integration into boiler control circuits, the built-in SPST auxiliary switch provides an end-switch closure to signal the circulator pump or burner. With a 15-second nominal opening time and 18-inch lead wires, this low voltage zone valve is the industry standard for hydronic radiant heating and baseboard applications demanding long-term durability and precise flow regulation.
Key Benefits for Contractors
- Efficient Flow Control: The 3.5 Cv rating ensures optimal flow rates for residential and light commercial hydronic zones.
- Integrated End Switch: The normally open auxiliary switch simplifies wiring by providing a direct signal to start the boiler or pump once the valve is fully open.
- Fail-Safe Operation: Mechanical spring return to close functionality prevents unintended heating during power failures.
- Simplified Maintenance: The manual opener allows technicians to bypass the actuator for system air purging or emergency operation.
- Compact Connectivity: 1/2 inch inverted flare fittings provide a secure, leak-resistant connection in tight mechanical spaces.
Common Installation & Technical Questions
Can the actuator head be replaced without draining the system?
Yes, the Resideo V8043G1125 is designed with a replaceable motor and powerhead assembly, allowing for service without breaking the hydronic seal.
What is the purpose of the 18-lead wires on this model?
The leads provide ample length for direct connection to a 24V transformer and the end-switch circuit, reducing the need for additional field-installed jumpers.
Does this valve support high-head pressure circulators?
This valve is rated for a 20 PSI close-off pressure; ensure your pump's head pressure does not exceed this limit to prevent "ghost flow" or hammer through the seat.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Resideo V8043G1125 is a professional-grade Normally Closed zone valve engineered for hydronic heating systems requiring reliable zone control. This motor-actuated valve features a 1/2" Inverted Flare connection and operates on a standard 24 Vac power supply. Designed with a 3.5 Cv flow capacity, it provides efficient fluid movement while maintaining a 20 PSI maximum differential pressure for positive close-off. The internal spring return mechanism ensures the valve defaults to the closed position during power loss, while the manual opener lever allows for system filling and troubleshooting without electrical power. For seamless integration into boiler control circuits, the built-in SPST auxiliary switch provides an end-switch closure to signal the circulator pump or burner. With a 15-second nominal opening time and 18-inch lead wires, this low voltage zone valve is the industry standard for hydronic radiant heating and baseboard applications demanding long-term durability and precise flow regulation.
Key Benefits for Contractors
- Efficient Flow Control: The 3.5 Cv rating ensures optimal flow rates for residential and light commercial hydronic zones.
- Integrated End Switch: The normally open auxiliary switch simplifies wiring by providing a direct signal to start the boiler or pump once the valve is fully open.
- Fail-Safe Operation: Mechanical spring return to close functionality prevents unintended heating during power failures.
- Simplified Maintenance: The manual opener allows technicians to bypass the actuator for system air purging or emergency operation.
- Compact Connectivity: 1/2 inch inverted flare fittings provide a secure, leak-resistant connection in tight mechanical spaces.
Common Installation & Technical Questions
Can the actuator head be replaced without draining the system?
Yes, the Resideo V8043G1125 is designed with a replaceable motor and powerhead assembly, allowing for service without breaking the hydronic seal.
What is the purpose of the 18-lead wires on this model?
The leads provide ample length for direct connection to a 24V transformer and the end-switch circuit, reducing the need for additional field-installed jumpers.
Does this valve support high-head pressure circulators?
This valve is rated for a 20 PSI close-off pressure; ensure your pump's head pressure does not exceed this limit to prevent "ghost flow" or hammer through the seat.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
