Description
The Resideo MX128LF is a 1-1/4″ lead-free thermostatic mixing valve engineered for precise hot water temperature control in residential and light commercial hydronic plumbing systems. Designed to blend hot and cold water supplies to a consistent, safe outlet temperature, this valve helps protect building occupants from scalding while also reducing the risk of Legionella growth in water distribution systems.
Constructed with lead-free materials, the MX128LF meets modern plumbing code requirements for potable water applications, making it an ideal choice for domestic hot water systems, boiler protection, and radiant heating circuits.
Key Features
- 1-1/4″ connection size for higher-flow residential and commercial applications
- Temperature range: 110–150°F for flexible system setpoints
- Lead-free construction — compliant with NSF/ANSI and applicable potable water standards
- Thermostatic mixing technology delivers consistent outlet temperatures
- Protects against scalding and thermal shock
- Suitable for domestic hot water, boiler system protection, and radiant heating
- Durable valve body designed for long service life in hydronic applications
Specifications
- Brand: Resideo
- Model / SKU: MX128LF
- Connection Size: 1-1/4″
- Temperature Range: 110–150°F
- Construction: Lead-Free
- Valve Type: Thermostatic Mixing Valve
Applications
- Domestic hot water temperature regulation
- Boiler return protection (low-temperature mixing)
- Radiant floor heating supply circuits
- Commercial and residential plumbing systems requiring potable water compliance
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