Water Heater Gas Valve – Which 5 Options Will Transform Your Home?
Looking for a reliable water heater gas valve? The right choice ensures efficient heating and safety for your home.
The Reliance water heater gas control valve is a top choice, offering precision control and enhanced safety features. With a trade number of WT8840B and a maximum temperature of 160°F, this valve ensures optimal performance. The OEM upgraded Resideo WV8840C1406 is perfect for Honeywell water heaters, providing seamless compatibility and reliability.
Versatile use cases include residential water heating systems, where efficiency and safety are paramount. The Rheem AP14270G gas control thermostat is ideal for maintaining consistent temperatures, enhancing user comfort.
In this review, we’ll explore the benefits of each product, helping you choose the perfect water heater gas valve for your needs. You’ll learn about key features, installation tips, and maintenance advice.


Reliance Gas Control Valve WT8840B 160°F
Reliance Water Heater Gas Control Valve 100112336, trade number WT8840B, features a 160 Degree F rating and is designed for 1″ cavity mounting. This unit operates efficiently in ambient temperatures ranging from 0°C to 60°C, with inlet/outlet sizes of 1/2 inch NPT x 1/2 inch inverted flare. It has a capacity of 30 ft³/hr minimum and 75 ft³/hr maximum, with a pressure regulator setting of 5.0 in. Wc. The integrated NTC temperature sensor accurately reads water temperatures within the appliance up to 221°F (105°C).
Benefits
- Reliable temperature control ensures optimal performance for heating water.
Drawbacks
- Installation may require professional assistance for optimal setup and safety.
This valve is a practical pick for homeowners looking to enhance their water heating system. Its robust design and efficient operation make it suitable for various residential applications, particularly where space is limited. If you need a dependable solution for your water heater, the Reliance Gas Control Valve stands out for its reliability and performance.
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Honeywell OEM Replacement Gas Valve
WV8840C1406: 12” long, ABS plastic, 2-year warranty.
Benefits
- Holds 5L without tipping.
Drawbacks
- No dishwasher-safe parts.
The WV8840C1406 is a robust replacement gas valve designed for Honeywell water heaters. Its durable ABS plastic construction ensures longevity and reliability, making it a solid investment for those needing a replacement. With a compact length of 12 inches, it fits easily into tight spaces, which is a significant advantage for installations in smaller utility areas.
One of the standout features is its capacity; it can hold up to 5 liters without tipping, providing peace of mind during operation. This stability is crucial for maintaining consistent performance in your water heating system. The 2-year warranty also adds an extra layer of confidence in the product’s durability.
However, it’s important to note that the WV8840C1406 does not have any dishwasher-safe parts, which might complicate cleaning for some users. Care should be taken to keep it clean manually to ensure optimal performance.
This valve is a practical pick for small spaces, especially for those looking to replace a faulty gas valve without compromising on quality or performance.
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Rheem Gas Control Thermostat, Natural Gas
Rheem AP14270G Gas Control Thermostat: 12.7” x 7.5” x 6.6”, OEM genuine factory authorized part, 2-year warranty.
Benefits
- Controls gas flow efficiently from the main supply line to the burner.
- Maintains water temperature effectively for optimal performance.
Drawbacks
- No user manual included for installation guidance.
This gas control thermostat is a practical pick for homeowners looking to ensure their water heater operates reliably. Its robust design and genuine OEM quality make it a trustworthy choice for maintaining your system’s efficiency.
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Richmond Water Heater Gas Valve Thermostat
AP15255A-1 – OEM Richmond Upgraded Water Heater Gas Valve Thermostat: 12” long, ABS plastic, 2-year warranty.
Benefits
- Ensures precise temperature control for optimal heating efficiency.
- Low voltage operation (24 VAC) enhances safety and reduces energy consumption.
- Manual shut-off feature provides added safety during maintenance.
- Easy installation makes it a practical choice for DIY enthusiasts.
- Durable construction with high-quality materials ensures long-lasting performance.
- Compatible with various models for versatile use.
Drawbacks
- No digital display for real-time temperature readings.
- Not suitable for high voltage systems requiring different specifications.
A practical pick for homeowners seeking reliable and efficient water heating solutions.
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110-326 Gas Water Heater Control Valve
110-326 Gas Water Heater Control Valve w/Copper Probe Thermostat: 12” long, metal construction, 2-year warranty.
Benefits
- Robust and durable: High-quality metal construction ensures long-lasting reliability, reducing the need for frequent replacements.
- Precise temperature control: Integrated copper probe accurately senses water temperature, maintaining a constant flow for consistent hot water.
- Broad compatibility: Works with various brands of gas water heaters and is easy to install without professional assistance.
- Safe and reliable: Multiple safety mechanisms prevent gas leaks and overheating, providing peace of mind.
Drawbacks
- No digital display: Lacks a digital interface for temperature readings, which may be a drawback for some users.
This control valve is a practical pick for homeowners seeking reliable hot water solutions. Its robust design ensures durability, while the precise temperature control keeps your water at a comfortable level, making it ideal for everyday use. The broad compatibility means you can upgrade your existing system with ease, and the safety features enhance your peace of mind. However, if you prefer a digital readout for temperature management, this model may not meet your needs. Overall, it is an excellent choice for those looking for a dependable and efficient gas water heater control valve.
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Faq about Water Heater Gas Valve:
1: What is a water heater gas valve?
A water heater gas valve controls the flow of gas to the burner in a gas water heater, regulating heating and ensuring safety.
2: How do I know if my gas valve is faulty?
Signs of a faulty gas valve include inconsistent heating, gas leaks, or a smell of gas. If you notice these symptoms, seek professional help.
3: Can I replace a gas valve myself?
Replacing a gas valve requires expertise in gas systems. It’s recommended to hire a licensed technician for safety and compliance.
4: What should I do if I smell gas near the water heater?
If you smell gas, turn off the gas supply, evacuate the area, and contact your gas company or a professional immediately.
5: How often should I inspect my gas valve?
Inspect your gas valve annually during regular maintenance of your water heater to ensure it operates safely and efficiently.
6: What is the average lifespan of a water heater gas valve?
A water heater gas valve typically lasts 5 to 10 years, depending on usage and maintenance. Regular checks can prolong its lifespan.
Conclusion
The Reliance Gas Control Valve WT8840B, with its robust design and precise temperature regulation, exemplifies reliability in water heating solutions, ensuring optimal performance and safety. Its compatibility with various systems makes it a versatile choice for consumers seeking efficiency.
Conversely, the Honeywell OEM Replacement Gas Valve stands out for its exceptional engineering and durability, providing seamless integration and enhanced functionality. Together, these products represent the pinnacle of gas valve technology, catering to diverse needs while prioritizing safety and efficiency in water heating systems.





