Rheem-Ruud SP20166B Gas Valve

The Rheem-Ruud SP20166B is a direct replacement natural gas valve engineered for 4" WC manifold pressure applications. Designed for high reliability in residential HVAC systems, this 1/2" NPT gas valve features a compact footprint and standard 1/2-inch inlet/outlet ports, ensuring a straightforward fit during field replacements. As a critical component in the combustion string, the SP20166B manages fuel flow with precision, maintaining stable pressure for optimal burner performance. This OEM Rheem gas valve is built to withstand the rigors of frequent cycling and high-heat environments. When diagnosing ignition failures or erratic manifold pressures, verifying the millivolt output and coil resistance against factory specs is essential. This Rheem furnace gas valve replaces several legacy models, streamlining truck stock for contractors servicing Rheem, Ruud, and WeatherKing units.

• Precision Manifold Regulation: Factory-set at 4" WC for consistent natural gas delivery and efficient combustion.
• Standardized Porting: Features 1/2" x 1/2" NPT connections compatible with most standard residential gas lines.
• OEM Integrity: Ensures exact electrical and physical compatibility, reducing labor time during installation.
• Enhanced Safety: Quick-response solenoid closure provides reliable fuel shut-off upon loss of flame signal.

Is the SP20166B compatible with LP (Propane) systems?
No, this specific model is calibrated for Natural Gas at 4" WC. Conversion kits must be verified against the manufacturer's data plate before attempting use with liquid propane.

What are the typical electrical requirements for this valve?
This is a standard 24V AC intermittent pilot or direct spark ignition valve. Always check for proper ground and secondary transformer voltage before replacing.

Can this valve replace older Honeywell or White-Rodgers models?
Yes, provided the manifold pressure, pipe size, and electrical ratings match. Cross-referencing the Rheem SP20166B part number is the most accurate way to ensure a drop-in replacement.

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.