Lochinvar & A.O. Smith 100109606 Valve

The Lochinvar & A.O. Smith 100109606 is a professional-grade 3/4" brass drain valve engineered specifically for high-efficiency water heaters and boiler systems. As a veteran-preferred OEM replacement part, this valve features a 3-inch shank (3" Dimension A) that provides the necessary clearance for insulated tank jackets, ensuring a clean and accessible discharge point during routine system flushes. The heavy-duty brass construction is designed to withstand the thermal cycling and sediment buildup common in residential and commercial hydronic applications, maintaining a leak-free seal where generic plastic alternatives often fail.

For contractors performing preventative maintenance or emergency repairs, the 100109606 water heater drain valve offers a direct-fit solution for units previously utilizing part numbers 26273-6 and 9003907015. The 3/4 inch NPT male inlet provides a secure, threaded connection to the tank, while the standard hose thread outlet allows for rapid evacuation of the vessel. Integrating this genuine Lochinvar part into your service routine ensures system compatibility and protects the integrity of the pressure vessel by facilitating efficient sediment removal.

Key Benefits for Technicians:

• Extended 3-Inch Shank: Specifically designed to penetrate thick tank insulation for easy tool access and drainage.
• Durable Brass Body: Resists high-temperature degradation and prevents the cross-threading issues associated with composite valves.
• High-Flow Orifice: Provides superior flushing capability to clear calcium and lime scale buildup from the bottom of the tank.
• Precision Threading: Features a 3/4" MNPT inlet and standard male hose thread outlet for universal drainage compatibility.
• OEM Fitment: Verified replacement for A.O. Smith and Lochinvar systems, ensuring correct alignment and discharge angles.

Common Questions:

Is the Lochinvar 100109606 compatible with other water heater brands?
While engineered for A.O. Smith and Lochinvar assets, this valve utilizes standard 3/4" NPT threads. However, it is always recommended to verify the specific shank length required for your unit's jacket thickness to ensure proper fitment.

Can this valve be used in potable water systems?
Yes, this brass drain valve is designed for use in residential and commercial water heating systems. Its robust construction ensures reliable performance in both closed-loop boilers and open potable water tanks.

What is the primary cause of drain valve failure in these systems?
Most failures are due to internal sediment buildup or seat degradation. Using a high-quality brass shank drain valve allows for more aggressive flushing and better resistance to the abrasive nature of scale, prolonging the service interval of the heating equipment.

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.