Watts 0121429 Valve
The Watts 0121429 (Model LFLL40XL) is a heavy-duty, 3/4-inch temperature and pressure relief valve designed specifically for commercial hot water heaters and supply tanks. Engineered with an extended shank, this valve is the industry standard for installations involving high-density insulation, eliminating the need for additional extension nipples. The lead-free cast copper silicon alloy construction ensures compliance with rigorous NSF/ANSI 61 standards while providing superior corrosion resistance in demanding water conditions.
This ASME rated and CSA listed safety component is calibrated for a 150 psi pressure relief setting and a 210°F temperature relief threshold. With a high-capacity steam discharge rating of 1,437,600 BTU/hr, the LFLL40XL provides critical over-pressurization protection for large-scale systems. The unit features a thermo-bonded coated thermostat for accurate thermal sensing and a non-mechanical seat-to-disc alignment to ensure a bubble-tight seal and reliable automatic reseating after operation. For contractors, the NPT male inlet and NPT female outlet connections, combined with tamper-resistant bonnet screws, streamline the installation process on commercial grade storage tanks.
Key Benefits for Technicians:
- Extended Shank Design: Specifically built for tanks with extra-thick insulation, saving time on the job site.
- High BTU Relief Capacity: Rated at 1,437,600 BTU/hr to meet strict commercial vessel safety requirements.
- Automatic Reseating: Precision-engineered to close securely after relieving excess pressure or temperature.
- Durable Construction: Lead-free copper silicon alloy body is resistant to aggressive water chemistry and mineral buildup.
- Test Lever Included: Allows for easy manual verification of waterway clearance and valve functionality.
Common Questions:
When should the LFLL40XL be used over a standard 40XL valve?
The LFLL40XL is required whenever you are installing on a water heater with thick jacket insulation where a standard 40XL shank will not reach the tank tappings. This ensures the thermostatic probe is positioned correctly within the top 6 inches of the tank to accurately sense water temperature.
Is this valve compatible with the SentryPlus Alert system?
Yes, this model often serves as the core valve for flood sensor integration. While the sensor kit is typically a separate add-on, the valve body is designed to accommodate modern monitoring systems for BAS (Building Automation System) connectivity.
Does this valve meet lead-free requirements for potable water?
Absolutely. The Watts 0121429 is manufactured using lead-free alloys, containing less than 0.25% lead by weighted average on wetted surfaces, making it compliant with state and federal codes for consumable water systems.
This item is not eligible for free shipping.
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: $827.36
-65%$827.36
$289.58Watts 0121429 Valve
The Watts 0121429 (Model LFLL40XL) is a heavy-duty, 3/4-inch temperature and pressure relief valve designed specifically for commercial hot water heaters and supply tanks. Engineered with an extended shank, this valve is the industry standard for installations involving high-density insulation, eliminating the need for additional extension nipples. The lead-free cast copper silicon alloy construction ensures compliance with rigorous NSF/ANSI 61 standards while providing superior corrosion resistance in demanding water conditions.
This ASME rated and CSA listed safety component is calibrated for a 150 psi pressure relief setting and a 210°F temperature relief threshold. With a high-capacity steam discharge rating of 1,437,600 BTU/hr, the LFLL40XL provides critical over-pressurization protection for large-scale systems. The unit features a thermo-bonded coated thermostat for accurate thermal sensing and a non-mechanical seat-to-disc alignment to ensure a bubble-tight seal and reliable automatic reseating after operation. For contractors, the NPT male inlet and NPT female outlet connections, combined with tamper-resistant bonnet screws, streamline the installation process on commercial grade storage tanks.
Key Benefits for Technicians:
- Extended Shank Design: Specifically built for tanks with extra-thick insulation, saving time on the job site.
- High BTU Relief Capacity: Rated at 1,437,600 BTU/hr to meet strict commercial vessel safety requirements.
- Automatic Reseating: Precision-engineered to close securely after relieving excess pressure or temperature.
- Durable Construction: Lead-free copper silicon alloy body is resistant to aggressive water chemistry and mineral buildup.
- Test Lever Included: Allows for easy manual verification of waterway clearance and valve functionality.
Common Questions:
When should the LFLL40XL be used over a standard 40XL valve?
The LFLL40XL is required whenever you are installing on a water heater with thick jacket insulation where a standard 40XL shank will not reach the tank tappings. This ensures the thermostatic probe is positioned correctly within the top 6 inches of the tank to accurately sense water temperature.
Is this valve compatible with the SentryPlus Alert system?
Yes, this model often serves as the core valve for flood sensor integration. While the sensor kit is typically a separate add-on, the valve body is designed to accommodate modern monitoring systems for BAS (Building Automation System) connectivity.
Does this valve meet lead-free requirements for potable water?
Absolutely. The Watts 0121429 is manufactured using lead-free alloys, containing less than 0.25% lead by weighted average on wetted surfaces, making it compliant with state and federal codes for consumable water systems.
This item is not eligible for free shipping.
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 0121429 (Model LFLL40XL) is a heavy-duty, 3/4-inch temperature and pressure relief valve designed specifically for commercial hot water heaters and supply tanks. Engineered with an extended shank, this valve is the industry standard for installations involving high-density insulation, eliminating the need for additional extension nipples. The lead-free cast copper silicon alloy construction ensures compliance with rigorous NSF/ANSI 61 standards while providing superior corrosion resistance in demanding water conditions.
This ASME rated and CSA listed safety component is calibrated for a 150 psi pressure relief setting and a 210°F temperature relief threshold. With a high-capacity steam discharge rating of 1,437,600 BTU/hr, the LFLL40XL provides critical over-pressurization protection for large-scale systems. The unit features a thermo-bonded coated thermostat for accurate thermal sensing and a non-mechanical seat-to-disc alignment to ensure a bubble-tight seal and reliable automatic reseating after operation. For contractors, the NPT male inlet and NPT female outlet connections, combined with tamper-resistant bonnet screws, streamline the installation process on commercial grade storage tanks.
Key Benefits for Technicians:
- Extended Shank Design: Specifically built for tanks with extra-thick insulation, saving time on the job site.
- High BTU Relief Capacity: Rated at 1,437,600 BTU/hr to meet strict commercial vessel safety requirements.
- Automatic Reseating: Precision-engineered to close securely after relieving excess pressure or temperature.
- Durable Construction: Lead-free copper silicon alloy body is resistant to aggressive water chemistry and mineral buildup.
- Test Lever Included: Allows for easy manual verification of waterway clearance and valve functionality.
Common Questions:
When should the LFLL40XL be used over a standard 40XL valve?
The LFLL40XL is required whenever you are installing on a water heater with thick jacket insulation where a standard 40XL shank will not reach the tank tappings. This ensures the thermostatic probe is positioned correctly within the top 6 inches of the tank to accurately sense water temperature.
Is this valve compatible with the SentryPlus Alert system?
Yes, this model often serves as the core valve for flood sensor integration. While the sensor kit is typically a separate add-on, the valve body is designed to accommodate modern monitoring systems for BAS (Building Automation System) connectivity.
Does this valve meet lead-free requirements for potable water?
Absolutely. The Watts 0121429 is manufactured using lead-free alloys, containing less than 0.25% lead by weighted average on wetted surfaces, making it compliant with state and federal codes for consumable water systems.
This item is not eligible for free shipping.
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.
