Watts 0559109 Valve
The Watts 0559109 (Model LFL1170M2-US) is a high-performance 3/4 inch thermostatic mixing valve engineered for precision temperature regulation in domestic hot water and radiant heating systems. Featuring a lead-free brass construction, this valve utilizes a solid wax hydraulic thermostat and a double throttling design to provide a sensitive, rapid response to inlet temperature fluctuations, maintaining a consistent outlet temperature within +/- 3°F. Specifically built for low-temperature applications, it offers an adjustable field range of 60-120°F, making it a critical component for protecting sensitive floor tubing and ensuring safe point-on-use delivery.
For veteran contractors, the Watts L1170-US streamlines installation with union solder connections and integrates check valves and filter washers directly into the hot and cold inlets to prevent cross-flow and debris contamination. With a maximum pressure rating of 150 psi and a flow capacity of up to 23 GPM, this ASSE 1017 listed valve ensures compliance with strict potable water and mechanical codes while providing a fail-safe feature that restricts output to a drip upon loss of cold water supply.
Key Benefits- Double Throttling Design: Simultaneously controls hot and cold ports for superior thermal stability.
- Lead-Free Construction: Meets all NSF/ANSI 61-G and Safe Drinking Water Act requirements.
- Low-Temp Precision: Specifically calibrated for 60-120°F ranges, ideal for radiant floor heating.
- System Security: Features a locking mechanism on the adjustment cap to prevent unauthorized temperature tampering.
Is the Watts 0559109 suitable for high-temperature domestic loops?
This specific model (LFL1170) is calibrated for low-temperature output (60-120°F). For standard domestic mixing up to 160°F, refer to the LF1170-M2 series.
Does this valve protect against thermal shock?
Yes, it is ASSE 1017 certified for point-of-source applications and includes a thermal actuator that shuts down the hot water flow almost entirely if the cold water supply fails.
What is the minimum flow rate required for accurate mixing?
The valve maintains accurate temperature control at flow rates as low as 0.5 GPM, accommodating smaller residential zones and low-flow fixtures.
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: $316.58
-65%$316.58
$110.80Watts 0559109 Valve
The Watts 0559109 (Model LFL1170M2-US) is a high-performance 3/4 inch thermostatic mixing valve engineered for precision temperature regulation in domestic hot water and radiant heating systems. Featuring a lead-free brass construction, this valve utilizes a solid wax hydraulic thermostat and a double throttling design to provide a sensitive, rapid response to inlet temperature fluctuations, maintaining a consistent outlet temperature within +/- 3°F. Specifically built for low-temperature applications, it offers an adjustable field range of 60-120°F, making it a critical component for protecting sensitive floor tubing and ensuring safe point-on-use delivery.
For veteran contractors, the Watts L1170-US streamlines installation with union solder connections and integrates check valves and filter washers directly into the hot and cold inlets to prevent cross-flow and debris contamination. With a maximum pressure rating of 150 psi and a flow capacity of up to 23 GPM, this ASSE 1017 listed valve ensures compliance with strict potable water and mechanical codes while providing a fail-safe feature that restricts output to a drip upon loss of cold water supply.
Key Benefits- Double Throttling Design: Simultaneously controls hot and cold ports for superior thermal stability.
- Lead-Free Construction: Meets all NSF/ANSI 61-G and Safe Drinking Water Act requirements.
- Low-Temp Precision: Specifically calibrated for 60-120°F ranges, ideal for radiant floor heating.
- System Security: Features a locking mechanism on the adjustment cap to prevent unauthorized temperature tampering.
Is the Watts 0559109 suitable for high-temperature domestic loops?
This specific model (LFL1170) is calibrated for low-temperature output (60-120°F). For standard domestic mixing up to 160°F, refer to the LF1170-M2 series.
Does this valve protect against thermal shock?
Yes, it is ASSE 1017 certified for point-of-source applications and includes a thermal actuator that shuts down the hot water flow almost entirely if the cold water supply fails.
What is the minimum flow rate required for accurate mixing?
The valve maintains accurate temperature control at flow rates as low as 0.5 GPM, accommodating smaller residential zones and low-flow fixtures.
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.
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Description
The Watts 0559109 (Model LFL1170M2-US) is a high-performance 3/4 inch thermostatic mixing valve engineered for precision temperature regulation in domestic hot water and radiant heating systems. Featuring a lead-free brass construction, this valve utilizes a solid wax hydraulic thermostat and a double throttling design to provide a sensitive, rapid response to inlet temperature fluctuations, maintaining a consistent outlet temperature within +/- 3°F. Specifically built for low-temperature applications, it offers an adjustable field range of 60-120°F, making it a critical component for protecting sensitive floor tubing and ensuring safe point-on-use delivery.
For veteran contractors, the Watts L1170-US streamlines installation with union solder connections and integrates check valves and filter washers directly into the hot and cold inlets to prevent cross-flow and debris contamination. With a maximum pressure rating of 150 psi and a flow capacity of up to 23 GPM, this ASSE 1017 listed valve ensures compliance with strict potable water and mechanical codes while providing a fail-safe feature that restricts output to a drip upon loss of cold water supply.
Key Benefits- Double Throttling Design: Simultaneously controls hot and cold ports for superior thermal stability.
- Lead-Free Construction: Meets all NSF/ANSI 61-G and Safe Drinking Water Act requirements.
- Low-Temp Precision: Specifically calibrated for 60-120°F ranges, ideal for radiant floor heating.
- System Security: Features a locking mechanism on the adjustment cap to prevent unauthorized temperature tampering.
Is the Watts 0559109 suitable for high-temperature domestic loops?
This specific model (LFL1170) is calibrated for low-temperature output (60-120°F). For standard domestic mixing up to 160°F, refer to the LF1170-M2 series.
Does this valve protect against thermal shock?
Yes, it is ASSE 1017 certified for point-of-source applications and includes a thermal actuator that shuts down the hot water flow almost entirely if the cold water supply fails.
What is the minimum flow rate required for accurate mixing?
The valve maintains accurate temperature control at flow rates as low as 0.5 GPM, accommodating smaller residential zones and low-flow fixtures.
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.
