Nordyne 921691 Gas Valve

The Nordyne 921691 Gas Valve is a critical OEM replacement engineered for high-efficiency heating systems. This 2-stage gas valve facilitates precise gas regulation with a manifold pressure range of 1.7" WC to 3.3" WC, ensuring optimal combustion for residential furnaces and packaged units. As the direct updated version of 624652 and 624787, this 24V gas valve features a standard 1/2" NPT connection, making it a drop-in solution for N-Series equipment and common Miller furnace gas valve replacements. Designed for intermittent direct ignition, it provides professional-grade reliability and maintains the exact technical specifications required for safe gas flow control. Techs should note this valve is compatible with both natural gas and LP applications (with appropriate conversion if required), offering a seamless transition from obsolete controls to current HVAC OEM parts.

• OEM Precision: Genuine Nordyne replacement part ensures exact fitment and calibration for supported furnace models.
• Dual-Stage Regulation: Supports both low-fire (1.7" WC) and high-fire (3.3" WC) settings for maximum system efficiency.
• Universal 1/2" Inlet/Outlet: Standardized 1/2 inch gas valve threading simplifies the installation process for field technicians.
• Broad Cross-Reference: Expertly replaces obsolete part numbers including 624787R, 624652R, and 921816.

• What does the Nordyne 921691 replace? It is the official successor to 624652 and 624787, addressing common failures in older 2-stage heating units.
• Is this valve compatible with LP gas? While specified for natural gas, many 24v 1/2 inch gas valves in this series can be converted for Propane (LP) usage with a manufacturer-approved kit.
• How do you set the manifold pressure? Ensure you use a digital manometer to verify the 1.7" and 3.3" WC settings against the furnace data plate during commissioning.

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.