
Danfoss 31622011LF Valve
The Danfoss 31622011LF is a high-performance 1 inch NPT thermostatic mixing valve designed for veteran contractors and HVAC technicians who require precise temperature regulation in domestic hot water systems and hydronic heating applications. Part of the VTA Series, this lead free thermostatic mixing valve utilizes a self-regulating internal thermostat to maintain a stable output between 95-140°F, effectively mitigating the risk of scalding while maximizing boiler efficiency. With a robust 4.1 Cv flow capacity and a maximum operating pressure of 150 PSI, this valve is engineered for durability in both commercial and residential point-of-source installations.
Constructed from lead-free materials to meet modern potable water standards, the Danfoss 31622011LF features a compact, lightweight design that simplifies installation in restrictive mechanical spaces. The 3-way mixing valve includes a snap-on cover to protect internal components from debris and prevent unauthorized tampering with temperature settings. Whether you are performing a water heater replacement or balancing a radiant heating loop, this thermal mixing valve provides the quiet operation and reliability required for professional-grade fluid control.
Key Benefits
- Lead-Free Brass Construction: Meets rigorous standards for potable water distribution and domestic hot water systems.
- Wide Adjustment Range: Precise 95-140°F (35-60°C) temperature control for optimal safety and thermal comfort.
- High Flow Capacity: Features a 4.1 Cv rating to ensure minimal pressure drop in high-demand plumbing runs.
- Anti-Scald Protection: Instantaneous shut-off response during cold water supply failure to prevent hazardous discharge.
- Compact Threaded Connections: Standard 1" Female NPT (FNPT) ports allow for seamless integration with existing piping manifolds.
Common Questions
Can this valve be used in recirculating hot water loops?
Yes, the 31622011LF is suitable for hot water recirculation systems, provided the return temp is managed correctly to ensure the thermostat can effectively mix the supply.
Does this mixing valve require a specific mounting orientation?
This valve can generally be mounted in any orientation, but it is best practice to install it where the adjustment knob remains accessible for seasonal calibration.
Is the Danfoss 31622011LF a direct replacement for older 20-series valves?
Yes, the 31622011LF (and the broader VTA520/521 series) serves as a modern, lead-free upgrade for the legacy Series 20 and 30MR thermostatic valves.
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.
Original: $324.02
-65%$324.02
$113.41Danfoss 31622011LF Valve
The Danfoss 31622011LF is a high-performance 1 inch NPT thermostatic mixing valve designed for veteran contractors and HVAC technicians who require precise temperature regulation in domestic hot water systems and hydronic heating applications. Part of the VTA Series, this lead free thermostatic mixing valve utilizes a self-regulating internal thermostat to maintain a stable output between 95-140°F, effectively mitigating the risk of scalding while maximizing boiler efficiency. With a robust 4.1 Cv flow capacity and a maximum operating pressure of 150 PSI, this valve is engineered for durability in both commercial and residential point-of-source installations.
Constructed from lead-free materials to meet modern potable water standards, the Danfoss 31622011LF features a compact, lightweight design that simplifies installation in restrictive mechanical spaces. The 3-way mixing valve includes a snap-on cover to protect internal components from debris and prevent unauthorized tampering with temperature settings. Whether you are performing a water heater replacement or balancing a radiant heating loop, this thermal mixing valve provides the quiet operation and reliability required for professional-grade fluid control.
Key Benefits
- Lead-Free Brass Construction: Meets rigorous standards for potable water distribution and domestic hot water systems.
- Wide Adjustment Range: Precise 95-140°F (35-60°C) temperature control for optimal safety and thermal comfort.
- High Flow Capacity: Features a 4.1 Cv rating to ensure minimal pressure drop in high-demand plumbing runs.
- Anti-Scald Protection: Instantaneous shut-off response during cold water supply failure to prevent hazardous discharge.
- Compact Threaded Connections: Standard 1" Female NPT (FNPT) ports allow for seamless integration with existing piping manifolds.
Common Questions
Can this valve be used in recirculating hot water loops?
Yes, the 31622011LF is suitable for hot water recirculation systems, provided the return temp is managed correctly to ensure the thermostat can effectively mix the supply.
Does this mixing valve require a specific mounting orientation?
This valve can generally be mounted in any orientation, but it is best practice to install it where the adjustment knob remains accessible for seasonal calibration.
Is the Danfoss 31622011LF a direct replacement for older 20-series valves?
Yes, the 31622011LF (and the broader VTA520/521 series) serves as a modern, lead-free upgrade for the legacy Series 20 and 30MR thermostatic valves.
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.
Product Information
Product Information
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Description
The Danfoss 31622011LF is a high-performance 1 inch NPT thermostatic mixing valve designed for veteran contractors and HVAC technicians who require precise temperature regulation in domestic hot water systems and hydronic heating applications. Part of the VTA Series, this lead free thermostatic mixing valve utilizes a self-regulating internal thermostat to maintain a stable output between 95-140°F, effectively mitigating the risk of scalding while maximizing boiler efficiency. With a robust 4.1 Cv flow capacity and a maximum operating pressure of 150 PSI, this valve is engineered for durability in both commercial and residential point-of-source installations.
Constructed from lead-free materials to meet modern potable water standards, the Danfoss 31622011LF features a compact, lightweight design that simplifies installation in restrictive mechanical spaces. The 3-way mixing valve includes a snap-on cover to protect internal components from debris and prevent unauthorized tampering with temperature settings. Whether you are performing a water heater replacement or balancing a radiant heating loop, this thermal mixing valve provides the quiet operation and reliability required for professional-grade fluid control.
Key Benefits
- Lead-Free Brass Construction: Meets rigorous standards for potable water distribution and domestic hot water systems.
- Wide Adjustment Range: Precise 95-140°F (35-60°C) temperature control for optimal safety and thermal comfort.
- High Flow Capacity: Features a 4.1 Cv rating to ensure minimal pressure drop in high-demand plumbing runs.
- Anti-Scald Protection: Instantaneous shut-off response during cold water supply failure to prevent hazardous discharge.
- Compact Threaded Connections: Standard 1" Female NPT (FNPT) ports allow for seamless integration with existing piping manifolds.
Common Questions
Can this valve be used in recirculating hot water loops?
Yes, the 31622011LF is suitable for hot water recirculation systems, provided the return temp is managed correctly to ensure the thermostat can effectively mix the supply.
Does this mixing valve require a specific mounting orientation?
This valve can generally be mounted in any orientation, but it is best practice to install it where the adjustment knob remains accessible for seasonal calibration.
Is the Danfoss 31622011LF a direct replacement for older 20-series valves?
Yes, the 31622011LF (and the broader VTA520/521 series) serves as a modern, lead-free upgrade for the legacy Series 20 and 30MR thermostatic valves.
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.












