Description
The Taco Comfort Solutions 5003-T3 is a thermostatic mixing valve engineered for reliable hot water temperature regulation in residential and light commercial hydronic heating systems. Featuring 3/4″ NPT union connections for straightforward installation and serviceability, this MixValve blends hot and cold water supplies to deliver a consistent, controlled outlet temperature across a wide operating range of 85°F to 176°F (29°C to 80°C).
Taco’s thermostatic mixing valves are a trusted solution for protecting occupants from scalding while also helping to prevent Legionella growth by maintaining storage temperatures at safe levels. The union-style connections allow the valve body to be removed for inspection or replacement without disturbing the surrounding piping, reducing downtime and labor costs.
Key Features
- Thermostatic mixing valve for precise hot water temperature control
- 3/4″ NPT union connections for easy installation and in-line serviceability
- Wide operating temperature range: 85°F to 176°F (29°C to 80°C)
- Blends hot and cold supplies to deliver a consistent, safe outlet temperature
- Helps protect against scalding and supports anti-Legionella storage strategies
- Durable construction suited for residential and light commercial hydronic applications
- Union design allows valve removal without disturbing system piping
Specifications
- Brand: Taco Comfort Solutions
- Model / SKU: 5003-T3
- Connection Size: 3/4″ NPT
- Connection Type: Union
- Temperature Range: 85°F – 176°F (29°C – 80°C)
- Valve Type: Thermostatic Mixing Valve (MixValve)
Applications
- Hydronic heating systems
- Domestic hot water temperature control
- Radiant floor heating supply protection
- Boiler system mixing and tempering







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