Resideo AMX300T-LF Kit

Professional-grade thermostatic mixing valve kit specifically engineered for direct-connect installation on residential water heaters. The Resideo AMX300T-LF Kit streamlines point-of-source temperature regulation by integrating a lead-free mixing valve, a cold water tee fitting, and an 8-inch flexible stainless steel connector into a single package. This 3/4" MNPT x FNPT assembly is ASSE 1017 certified for whole-house applications, allowing contractors to increase storage tank temperatures to mitigate Legionella risks while maintaining a safe, stable discharge temperature for end-users. The valve features a Teflon-coated wear surface to prevent scale buildup and a push-twist-release locking handwheel for precise adjustments between 100°F and 145°F. For advanced plumbing layouts, it includes an integrated recirculation port for rapid hot water delivery and an auxiliary hot port to bypass the mixing chamber for high-temp requirements like dishwashers. In the event of a cold water supply failure, the thermal element reacts within seconds to reduce flow, preventing potential high-temperature exposure at the fixtures.

• Reduced Installation Time: The DirectConnect design mounts directly to the hot water outlet, requiring fewer additional parts and minimal sweat connections.
• Lead-Free Compliance: Constructed from high-quality lead-free brass, meeting all stringent potable water standards (NSF/ANSI 61 and 372).
• Enhanced System Efficiency: Allows for higher tank storage temperatures, which increases the effective hot water capacity of the tank by up to 50%.
• Reliable Performance: The internal proportional valve controls both hot and cold ports simultaneously for superior temperature stability under varying flow conditions.
• Scald Protection: Engineered to meet ASSE 1017 requirements, ensuring safe water delivery at every tap in the residence.

How does this valve handle hard water and scale?
The internal shuttle and wear surfaces are Teflon-coated, which significantly reduces mineral adhesion and prevents the valve from seizing in hard water environments.

Can I use this for a recirculation loop?
Yes, the AMX300TLF features a dedicated 1/2" NPT recirculation port to facilitate constant hot water availability at distant fixtures, though a check valve is required on the cold supply for code compliance.

What happens if the cold water supply is cut off?
The valve is designed for fail-safe flow reduction; it will mechanically restrict the hot water flow within seconds if the cold water pressure is lost.

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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.