Description
The Taco Comfort Solutions 5125-HF-C1 is a 1-1/4″ union sweat thermostatic mixing valve engineered for reliable, precise temperature blending in residential and light commercial hydronic heating and domestic hot water systems. Designed for easy installation and long-term serviceability, this mix valve combines hot and cold water supplies to deliver a consistent, safe outlet temperature — protecting occupants from scalding while maximizing system efficiency.
Key Features
- 1-1/4″ sweat (solder) connections for secure, leak-free installation
- Union-style fittings for simplified maintenance and in-line serviceability without cutting pipe
- Thermostatic mixing element provides accurate, self-regulating temperature control
- Durable brass body construction for corrosion resistance and long service life
- Suitable for potable hot water, radiant floor heating, and hydronic distribution applications
- Compact, low-profile design fits standard mechanical room installations
Application
The 5125-HF-C1 is ideal for use in hydronic heating systems, domestic hot water tempering, and radiant heating distribution where a stable, blended outlet temperature is required. The union sweat end connections allow the valve to be quickly isolated and removed for inspection or replacement without disturbing the surrounding piping.
Why Choose Taco Comfort Solutions
Taco Comfort Solutions is a trusted leader in hydronic heating and plumbing products, known for engineering high-quality circulators, valves, and system components. The 5125-HF-C1 mixing valve reflects Taco’s commitment to performance, reliability, and ease of installation — making it a preferred choice among professional HVAC and plumbing contractors.







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