The Lennox Y9933 gas valve is a genuine OEM replacement designed to deliver reliable and safe gas flow control in residential and light-commercial heating systems. Cross-referenced to the Honeywell VR8300M4406/U, this standing pilot gas valve features a single-stage, standard opening design and 3/4 in. inlet and outlet connections, making it a dependable solution for servicing compatible Lennox furnaces, boilers, and other gas-fired appliances.

Engineered for 24 VAC standing pilot ignition systems, this valve integrates essential safety and control components into one compact assembly, including an automatic gas shutoff, manual valve, pressure regulator, and pilot adjustment. Its proven Honeywell design ensures consistent performance, easy installation, and long service life, making it a trusted choice for HVAC professionals and contractors.

Product overview:

This gas valve is intended for systems using a standing pilot ignition and single-stage operation. It regulates gas flow precisely based on thermostat demand while maintaining required safety shutoff functions. The universal-style configuration allows it to serve as a direct replacement for Lennox Y9933 and equivalent Honeywell VR8300 series valves in many applications.

 

Key features and benefits:

 

• Genuine OEM Lennox replacement part
• Honeywell VR8300 series standing pilot gas valve
• Single-stage, standard opening operation
• 24 VAC control voltage
• Integrated pressure regulator and pilot adjustment
• 3/4 in. x 3/4 in. inlet and outlet connections
• Designed for dependable, safe gas flow control

 

Typical applications:

 

• Gas furnaces
• Boilers
• Unit heaters and other standing pilot gas-fired equipment

 

Specifications:

 

• Valve type: Standing pilot gas valve
• Stages: 1-stage
• Opening characteristic: Standard opening
• Voltage: 24 VAC, 50/60 Hz
• Connection size: 3/4 in. inlet x 3/4 in. outlet
• Compatible part numbers: Lennox Y9933, Honeywell VR8300M4406/U