Lochinvar & A.O. Smith 100167445 Valve

This genuine Lochinvar and A.O. Smith 100167445 Air Vent Valve is a critical component for maintaining hydraulic stability in high-efficiency heating systems. As a direct replacement for the RLV30000 and RLV2023, this valve is engineered to eliminate entrained air from the heat exchanger, preventing oxygen-related corrosion and ensuring consistent heat transfer. It is specifically designed for integration with Lochinvar Knight XL KBN399-800 and FTXL FTX400-850 series boilers, as well as various high-output water heaters. By facilitating continuous air venting, this part mitigates the risk of pump cavitation and "knocking" noises within the boiler chassis. The 100167445 air vent replacement features a robust construction capable of handling the high-temperature profiles typical of commercial hydronic applications. For field service technicians, utilizing this OEM Lochinvar boiler part ensures factory-spec fitment and long-term reliability in closed-loop systems. Maintaining a functional air vent is essential for preventing air-bound loops and protecting the integrity of the primary heat exchanger.

• Eliminates System Air: Automatically removes trapped air pockets to prevent circulation issues and localized overheating.
• Direct OEM Matching: Functionally identical to Lochinvar RLV30000 for a seamless "drop-in" replacement without piping modifications.
• Enhanced Component Longevity: Reduces the presence of dissolved oxygen, protecting the heat exchanger and circulating pumps from premature failure.
• Broad Compatibility: Validated for use in Lochinvar Knight and A.O. Smith commercial boiler and water heater lineups.

Which boiler models are compatible with this air vent?
The 100167445 is primarily used in Lochinvar Knight XL (KBN399 through KBN800) and FTXL (FTX400 through FTX850) models, as well as several Power-fit and Armor water heater series.

Can I use the 100167445 to replace a RLV30000?
Yes, the 100167445 is the official manufacturer replacement and is technically identical to the RLV30000 and RLV2023 part numbers.

What are the symptoms of a failing air vent valve?
Common signs include audible air gurgling in the boiler, frequent "low water flow" errors, or visible spotting/leaking from the vent cap, indicating the internal float mechanism is compromised.

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.