Description
The Danfoss 31622011LF is a 1″ NPT lead-free thermostatic mixing valve engineered to deliver precise, consistent hot water temperatures in hydronic and domestic hot water systems. With a factory-set temperature range of 95–140°F, this valve automatically blends hot and cold water supplies to maintain a safe, stable outlet temperature — protecting occupants from scalding while optimizing system efficiency.
Built to meet lead-free (LF) compliance standards, the 31622011LF is suitable for potable water applications where regulatory requirements demand low-lead construction. The robust 1″ NPT connections make installation straightforward in a wide range of residential and light commercial hydronic systems, boiler protection circuits, and domestic hot water distribution networks.
Key Features
- Lead-free (LF) construction — compliant with low-lead potable water regulations
- 1″ NPT connections for easy integration into standard piping systems
- Temperature mixing range: 95–140°F for versatile hot water control
- Automatic thermostatic blending protects against scalding and thermal shock
- Ideal for boiler system protection, domestic hot water, and hydronic heating applications
- Durable Danfoss engineering for long service life and reliable performance
Specifications
- Brand: Danfoss
- Model / SKU: 31622011LF
- Connection Size: 1″ NPT
- Temperature Range: 95–140°F
- Valve Type: Thermostatic Mixing Valve
- Lead-Free Compliant: Yes
Applications
- Domestic hot water temperature regulation
- Boiler return protection and system balancing
- Hydronic radiant heating systems
- Commercial and residential plumbing installations requiring lead-free components









