Resideo WT8840B1500 Gas Valve
The Resideo WT8840B1500 Gas Valve is a professional-grade standing pilot water heater control designed to replace legacy WV8840 series valves. Built for high-performance Natural Gas applications, this control is a direct fit for AO Smith and Bradford White water heaters. It features a 1/2" NPT inlet and a 1/2" Inverted Flare outlet, and it is engineered for tanks with a 2" insulation cavity. The integrated NTC temperature sensor provides precise sensing of water temperatures up to 221°F (105°C), while the internal 5.0" WC pressure regulator ensures consistent gas flow to the burner and pilot.
This replacement valve utilizes thermopile power, eliminating the need for external electricity, making it ideal for standard atmospheric venting systems. It incorporates a critical Temperature Cut-Out (TCO) fail-safe mechanism, protecting the system from overheating. Technicians can rely on this unit to replace older WV8840B1117 and WV8840B1059 models, ensuring reliable operation with standardized thermopile-powered pilots. This gas control must be mounted in an upright position for proper operation of the internal safety components and pressure regulation.
Key Benefits
- Direct OEM Replacement: Replaces WV8840B1117, WV8840B1059, and various A.O. Smith gas valves without modifying the immersion well.
- NTC Temperature Sensing: The thermistor sensors provide higher accuracy in setpoint maintenance compared to traditional mechanical controls.
- Internal Safety TCO: A 189°F Temperature Cut-Out provides a fail-safe shutdown to prevent hazardous tank temperatures.
- Easy Installation: Standard 1/2" NPT x 1/2" Inverted Flare connections and a 2" shank length match the footprint of existing residential controls.
- Thermopile Powered: Operates entirely on the millivoltage generated by the standing pilot, ensuring hot water availability even during power outages.
Common Questions
Is the WT8840B1500 compatible with LP Gas?
No, this specific model is factory-set for Natural Gas at a 5" W.C. regulator setting and should not be used in propane applications.
Does this valve include the pilot assembly or thermopile?
This is the gas control valve only. It is designed to work with CS8840 pilot assemblies and standard thermopiles which are sold separately.
Can I use this valve on a water heater with 1" insulation?
This model features a 2" cavity depth (shank length). For 1" insulation tanks, you typically require a shorter shank model to ensure the NTC sensor sits at the correct depth within the immersion well.
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.
Resideo WT8840B1500 Gas Valve
The Resideo WT8840B1500 Gas Valve is a professional-grade standing pilot water heater control designed to replace legacy WV8840 series valves. Built for high-performance Natural Gas applications, this control is a direct fit for AO Smith and Bradford White water heaters. It features a 1/2" NPT inlet and a 1/2" Inverted Flare outlet, and it is engineered for tanks with a 2" insulation cavity. The integrated NTC temperature sensor provides precise sensing of water temperatures up to 221°F (105°C), while the internal 5.0" WC pressure regulator ensures consistent gas flow to the burner and pilot.
This replacement valve utilizes thermopile power, eliminating the need for external electricity, making it ideal for standard atmospheric venting systems. It incorporates a critical Temperature Cut-Out (TCO) fail-safe mechanism, protecting the system from overheating. Technicians can rely on this unit to replace older WV8840B1117 and WV8840B1059 models, ensuring reliable operation with standardized thermopile-powered pilots. This gas control must be mounted in an upright position for proper operation of the internal safety components and pressure regulation.
Key Benefits
- Direct OEM Replacement: Replaces WV8840B1117, WV8840B1059, and various A.O. Smith gas valves without modifying the immersion well.
- NTC Temperature Sensing: The thermistor sensors provide higher accuracy in setpoint maintenance compared to traditional mechanical controls.
- Internal Safety TCO: A 189°F Temperature Cut-Out provides a fail-safe shutdown to prevent hazardous tank temperatures.
- Easy Installation: Standard 1/2" NPT x 1/2" Inverted Flare connections and a 2" shank length match the footprint of existing residential controls.
- Thermopile Powered: Operates entirely on the millivoltage generated by the standing pilot, ensuring hot water availability even during power outages.
Common Questions
Is the WT8840B1500 compatible with LP Gas?
No, this specific model is factory-set for Natural Gas at a 5" W.C. regulator setting and should not be used in propane applications.
Does this valve include the pilot assembly or thermopile?
This is the gas control valve only. It is designed to work with CS8840 pilot assemblies and standard thermopiles which are sold separately.
Can I use this valve on a water heater with 1" insulation?
This model features a 2" cavity depth (shank length). For 1" insulation tanks, you typically require a shorter shank model to ensure the NTC sensor sits at the correct depth within the immersion well.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Resideo WT8840B1500 Gas Valve is a professional-grade standing pilot water heater control designed to replace legacy WV8840 series valves. Built for high-performance Natural Gas applications, this control is a direct fit for AO Smith and Bradford White water heaters. It features a 1/2" NPT inlet and a 1/2" Inverted Flare outlet, and it is engineered for tanks with a 2" insulation cavity. The integrated NTC temperature sensor provides precise sensing of water temperatures up to 221°F (105°C), while the internal 5.0" WC pressure regulator ensures consistent gas flow to the burner and pilot.
This replacement valve utilizes thermopile power, eliminating the need for external electricity, making it ideal for standard atmospheric venting systems. It incorporates a critical Temperature Cut-Out (TCO) fail-safe mechanism, protecting the system from overheating. Technicians can rely on this unit to replace older WV8840B1117 and WV8840B1059 models, ensuring reliable operation with standardized thermopile-powered pilots. This gas control must be mounted in an upright position for proper operation of the internal safety components and pressure regulation.
Key Benefits
- Direct OEM Replacement: Replaces WV8840B1117, WV8840B1059, and various A.O. Smith gas valves without modifying the immersion well.
- NTC Temperature Sensing: The thermistor sensors provide higher accuracy in setpoint maintenance compared to traditional mechanical controls.
- Internal Safety TCO: A 189°F Temperature Cut-Out provides a fail-safe shutdown to prevent hazardous tank temperatures.
- Easy Installation: Standard 1/2" NPT x 1/2" Inverted Flare connections and a 2" shank length match the footprint of existing residential controls.
- Thermopile Powered: Operates entirely on the millivoltage generated by the standing pilot, ensuring hot water availability even during power outages.
Common Questions
Is the WT8840B1500 compatible with LP Gas?
No, this specific model is factory-set for Natural Gas at a 5" W.C. regulator setting and should not be used in propane applications.
Does this valve include the pilot assembly or thermopile?
This is the gas control valve only. It is designed to work with CS8840 pilot assemblies and standard thermopiles which are sold separately.
Can I use this valve on a water heater with 1" insulation?
This model features a 2" cavity depth (shank length). For 1" insulation tanks, you typically require a shorter shank model to ensure the NTC sensor sits at the correct depth within the immersion well.
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.
