Resideo by Honeywell VR8345Q4563 24 VAC 2-Stage Dual Gas Valve 3/4" Inlet/Outlet

The Resideo by Honeywell VR8345Q4563 is a 24 VAC two-stage gas valve designed for residential and light commercial HVAC applications. This versatile valve supports both direct ignition and intermittent pilot ignition systems, making it compatible with a wide range of furnace configurations.

Key Features:

• Two-stage operation for improved comfort and energy efficiency
• Dual ignition capability: Direct spark ignition (DSI) or intermittent pilot (IP)
• 24 VAC power supply requirement
• 3/4" NPT inlet and outlet connections for standard gas line compatibility
• Redundant gas valve design for enhanced safety
• Compatible with standing pilot, intermittent pilot, and direct ignition systems
• Electronic pressure regulator for precise gas flow control
• UL and CSA certified for safety compliance

This gas valve is engineered to provide reliable, safe gas flow control in two-stage heating systems. The dual ignition functionality allows for flexible installation in various furnace types, while the two-stage operation enables the system to operate at lower capacity during milder conditions, reducing energy consumption and improving temperature consistency. The VR8345Q series valves are commonly used as OEM replacement parts in residential forced-air furnaces and are compatible with most modern HVAC control systems.