Description
Keep your Lochinvar or A.O. Smith FTX850-series water heater operating at peak performance with this genuine OEM Natural Gas Valve Kit (part number 100189389, KITGASVALVENATFTX850). Designed as a direct-fit replacement, this kit restores precise gas flow control and helps ensure safe, efficient combustion in your natural gas water heating system.
Key Features
- OEM replacement gas valve kit engineered for Lochinvar and A.O. Smith FTX850-series water heaters
- Natural gas configuration for seamless compatibility with existing natural gas supply lines
- Restores accurate gas pressure regulation and reliable burner control
- Direct-fit design minimizes installation time and ensures proper sealing
- Manufactured to Lochinvar & A.O. Smith quality standards for long-term durability
- Helps maintain safe operation and system efficiency
Application
- Compatible with Lochinvar and A.O. Smith FTX850-series commercial water heaters
- Natural gas (NAT) application
- Ideal for scheduled maintenance, emergency replacement, or system upgrades
Why Choose OEM Parts?
Using genuine Lochinvar & A.O. Smith replacement parts ensures your equipment performs as designed, preserves warranty coverage, and reduces the risk of callbacks. This gas valve kit is the trusted choice for HVAC and plumbing professionals who demand reliability on every job.







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