About This Item:

• Reliable Safety Protection:Flammable Vapor Sensor Film Capable of quickly reacting to gasoline vapors in the surrounding air of the water heater, causing a change in resistance based on the vapor concentration
• Direct Replacement for SP20172 / AP13447-3 25VS:This flammable vapor sensor kit is a direct replacement for part numbers SP20172 and AP13447-3 (25VS), restoring normal operation when the original sensor fails.
• Wide Compatibility :Compatible with select Rheem, Ruud, and Richmond FVIR gas water heaters. Ideal for residential gas water heater safety system repairs. (Please verify model compatibility before purchase.)
• Complete Sensor Kit Included:Includes flammable vapor sensor, protective cap, and necessary components for straightforward replacement—no additional parts required.
• Durable & Easy Installation:Manufactured with heat-resistant and corrosion-resistant materials for long-term reliability. Simple plug-in installation helps reduce downtime and service costs.
• The kit includes a Flammable Vapor Sensor (AP13447-3 - 25VS), a Cap Plug, and a Wire Tie. It is compatible with Rheem (Ruud, Richmond) FVIR water heaters, as well as certain models of AO Smith and Bradford White water heaters. For any questions or compatibility inquiries, feel free to consult with us
• Flammable vapor sensor film: Capable of quickly reacting to gasoline vapors in the surrounding air of the water heater, causing a change in resistance based on the vapor concentration
• Quick response: Upon detecting a leak, it quickly triggers the control module to shut off the gas supply to the water heater and prevent ignition, reducing safety risks
• No external power required: It relies solely on the small amount of power provided by the control circuit to read the sensor's resistance changes and perform subsequent processing
• Fixing the water heater issue: After replacing the sensor, the water heater quickly started working again and hot water was restored.