
Watts 0121411 Valve
The Watts 0121411 (Model LF40XL-5-100) is a heavy-duty, automatic reseating temperature and pressure relief valve designed for commercial hot water supply tanks and storage heaters. Featuring a lead-free copper silicon alloy body and a 5-inch non-potable water extension thermostat, this valve is engineered for high-capacity protection in demanding environments. It is equipped with a 3/4" NPT male inlet and a 3/4" NPT female outlet, providing a consistent 200,000 BTU/hr capacity at its factory-set 100 PSI pressure relief and 210°F temperature threshold.
For modern facility management, the Watts 40XL series integrates SentryPlus Alert technology, featuring a discharge line flood sensor that can be linked to a building management system (BMS) to detect excessive water discharge. The thermo-bonded coating on the thermostat probe effectively retards mineral deposit accumulation, ensuring long-term sensing accuracy. With ASME Section IV and CSA ratings, this T&P valve meeting ANSI Z21.22 requirements provides reliable thermal expansion protection and safety for critical water heating infrastructure.
Key Benefits for Contractors:- Enhanced Durability: The lead-free copper silicon alloy construction ensures mechanical integrity in commercial boiler and tank applications.
- Mineral Resistance: A coated thermostat extension prevents scale buildup, maintaining precise temperature response over time.
- System Integration: Includes an integrated SentryPlus Alert flood sensor for remote monitoring and flood prevention when paired with a connection kit.
- Reliable Reseating: Features non-mechanical seat-to-disc alignment and tamper-resistant bonnet screws for secure, repeated operation.
- Code Compliance: Fully ASME rated and CSA listed for high-capacity commercial hot water heater installations.
What is the relief capacity of the Watts 40XL-5-100?
This specific model provides a steam discharge capacity of 200,000 BTU/hr, making it suitable for larger residential and mid-sized commercial storage tanks.
Can this valve be installed on a water heater with a higher BTU rating?
No, for safety compliance, the T&P relief valve BTU rating must exceed the BTU input rating of the water heater it is protecting.
Does the 5-inch thermostat extension accommodate thick tank insulation?
Yes, the 40XL extension thermostat is specifically designed to reach through the hot water outlet and insulation to ensure the sensing element remains in contact with the hottest water at the top of the tank.
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: $692.35
-65%$692.35
$242.32Watts 0121411 Valve
The Watts 0121411 (Model LF40XL-5-100) is a heavy-duty, automatic reseating temperature and pressure relief valve designed for commercial hot water supply tanks and storage heaters. Featuring a lead-free copper silicon alloy body and a 5-inch non-potable water extension thermostat, this valve is engineered for high-capacity protection in demanding environments. It is equipped with a 3/4" NPT male inlet and a 3/4" NPT female outlet, providing a consistent 200,000 BTU/hr capacity at its factory-set 100 PSI pressure relief and 210°F temperature threshold.
For modern facility management, the Watts 40XL series integrates SentryPlus Alert technology, featuring a discharge line flood sensor that can be linked to a building management system (BMS) to detect excessive water discharge. The thermo-bonded coating on the thermostat probe effectively retards mineral deposit accumulation, ensuring long-term sensing accuracy. With ASME Section IV and CSA ratings, this T&P valve meeting ANSI Z21.22 requirements provides reliable thermal expansion protection and safety for critical water heating infrastructure.
Key Benefits for Contractors:- Enhanced Durability: The lead-free copper silicon alloy construction ensures mechanical integrity in commercial boiler and tank applications.
- Mineral Resistance: A coated thermostat extension prevents scale buildup, maintaining precise temperature response over time.
- System Integration: Includes an integrated SentryPlus Alert flood sensor for remote monitoring and flood prevention when paired with a connection kit.
- Reliable Reseating: Features non-mechanical seat-to-disc alignment and tamper-resistant bonnet screws for secure, repeated operation.
- Code Compliance: Fully ASME rated and CSA listed for high-capacity commercial hot water heater installations.
What is the relief capacity of the Watts 40XL-5-100?
This specific model provides a steam discharge capacity of 200,000 BTU/hr, making it suitable for larger residential and mid-sized commercial storage tanks.
Can this valve be installed on a water heater with a higher BTU rating?
No, for safety compliance, the T&P relief valve BTU rating must exceed the BTU input rating of the water heater it is protecting.
Does the 5-inch thermostat extension accommodate thick tank insulation?
Yes, the 40XL extension thermostat is specifically designed to reach through the hot water outlet and insulation to ensure the sensing element remains in contact with the hottest water at the top of the tank.
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 0121411 (Model LF40XL-5-100) is a heavy-duty, automatic reseating temperature and pressure relief valve designed for commercial hot water supply tanks and storage heaters. Featuring a lead-free copper silicon alloy body and a 5-inch non-potable water extension thermostat, this valve is engineered for high-capacity protection in demanding environments. It is equipped with a 3/4" NPT male inlet and a 3/4" NPT female outlet, providing a consistent 200,000 BTU/hr capacity at its factory-set 100 PSI pressure relief and 210°F temperature threshold.
For modern facility management, the Watts 40XL series integrates SentryPlus Alert technology, featuring a discharge line flood sensor that can be linked to a building management system (BMS) to detect excessive water discharge. The thermo-bonded coating on the thermostat probe effectively retards mineral deposit accumulation, ensuring long-term sensing accuracy. With ASME Section IV and CSA ratings, this T&P valve meeting ANSI Z21.22 requirements provides reliable thermal expansion protection and safety for critical water heating infrastructure.
Key Benefits for Contractors:- Enhanced Durability: The lead-free copper silicon alloy construction ensures mechanical integrity in commercial boiler and tank applications.
- Mineral Resistance: A coated thermostat extension prevents scale buildup, maintaining precise temperature response over time.
- System Integration: Includes an integrated SentryPlus Alert flood sensor for remote monitoring and flood prevention when paired with a connection kit.
- Reliable Reseating: Features non-mechanical seat-to-disc alignment and tamper-resistant bonnet screws for secure, repeated operation.
- Code Compliance: Fully ASME rated and CSA listed for high-capacity commercial hot water heater installations.
What is the relief capacity of the Watts 40XL-5-100?
This specific model provides a steam discharge capacity of 200,000 BTU/hr, making it suitable for larger residential and mid-sized commercial storage tanks.
Can this valve be installed on a water heater with a higher BTU rating?
No, for safety compliance, the T&P relief valve BTU rating must exceed the BTU input rating of the water heater it is protecting.
Does the 5-inch thermostat extension accommodate thick tank insulation?
Yes, the 40XL extension thermostat is specifically designed to reach through the hot water outlet and insulation to ensure the sensing element remains in contact with the hottest water at the top of the tank.
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.












