
Watts 0121415 Valve
The Watts 0121415 (Model 40XL-Z2-150) is a heavy-duty, automatic reseating temperature and pressure relief valve engineered for critical protection in commercial water heating systems. Designed for hot water supply tanks and large-scale water heaters, this 3/4" NPT valve features a high-grade bronze body and a 5-inch thermostat extension. It is factory-set to trip at 150 PSI and 210°F, ensuring system integrity by discharging overheated water or excess pressure before system failure occurs. The thermo-bonded coated thermostat provides accurate thermal response and resists mineral buildup, while the tamper-resistant bonnet screws prevent unauthorized field adjustments. Built for reliability in demanding mechanical rooms, the Watts 40XL Series leverages a non-mechanical seat-to-disc alignment for consistent reseating after every discharge. This T&P valve is essential for maintaining ASME and CSA compliance in commercial hydronic and potable water heating applications where high-capacity safety relief is non-negotiable.
Key Benefits for the Contractor- Automatic Reseating: Eliminates the need for manual resets or valve replacement after a minor over-temperature or over-pressure event.
- Durable Bronze Construction: Provides superior corrosion resistance and longevity in aggressive water conditions.
- Advanced Thermostat Coating: The thermo-bonded thermostat is designed to reduce scale accumulation, maintaining precision in the 210°F thermal relief activation.
- Extended Probe Design: Specifically configured for installation within the hot water outlet to accurately sense the hottest water in the tank.
- ASME and CSA Certified: Verified performance ratings for high-capacity commercial water heater protection.
- How do I test the Watts 0121415 for proper operation? Use the integrated stainless steel test lever during routine inspections. Ensure the discharge pipe is clear and observe for a smooth flow and positive reseal upon releasing the lever.
- Is this valve suitable for potable water applications? Yes, the Watts 40XL-Z2 is used in both commercial potable water heaters and industrial storage tanks, though always verify local lead-free compliance for specific jurisdictional requirements.
- What is the purpose of the 5-inch extension? The extension ensures the thermal element is positioned correctly within the top 6 inches of the tank to monitor the most critical temperature zone, preventing "stacking" issues.
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: $558.41
-65%$558.41
$195.44Watts 0121415 Valve
The Watts 0121415 (Model 40XL-Z2-150) is a heavy-duty, automatic reseating temperature and pressure relief valve engineered for critical protection in commercial water heating systems. Designed for hot water supply tanks and large-scale water heaters, this 3/4" NPT valve features a high-grade bronze body and a 5-inch thermostat extension. It is factory-set to trip at 150 PSI and 210°F, ensuring system integrity by discharging overheated water or excess pressure before system failure occurs. The thermo-bonded coated thermostat provides accurate thermal response and resists mineral buildup, while the tamper-resistant bonnet screws prevent unauthorized field adjustments. Built for reliability in demanding mechanical rooms, the Watts 40XL Series leverages a non-mechanical seat-to-disc alignment for consistent reseating after every discharge. This T&P valve is essential for maintaining ASME and CSA compliance in commercial hydronic and potable water heating applications where high-capacity safety relief is non-negotiable.
Key Benefits for the Contractor- Automatic Reseating: Eliminates the need for manual resets or valve replacement after a minor over-temperature or over-pressure event.
- Durable Bronze Construction: Provides superior corrosion resistance and longevity in aggressive water conditions.
- Advanced Thermostat Coating: The thermo-bonded thermostat is designed to reduce scale accumulation, maintaining precision in the 210°F thermal relief activation.
- Extended Probe Design: Specifically configured for installation within the hot water outlet to accurately sense the hottest water in the tank.
- ASME and CSA Certified: Verified performance ratings for high-capacity commercial water heater protection.
- How do I test the Watts 0121415 for proper operation? Use the integrated stainless steel test lever during routine inspections. Ensure the discharge pipe is clear and observe for a smooth flow and positive reseal upon releasing the lever.
- Is this valve suitable for potable water applications? Yes, the Watts 40XL-Z2 is used in both commercial potable water heaters and industrial storage tanks, though always verify local lead-free compliance for specific jurisdictional requirements.
- What is the purpose of the 5-inch extension? The extension ensures the thermal element is positioned correctly within the top 6 inches of the tank to monitor the most critical temperature zone, preventing "stacking" issues.
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 0121415 (Model 40XL-Z2-150) is a heavy-duty, automatic reseating temperature and pressure relief valve engineered for critical protection in commercial water heating systems. Designed for hot water supply tanks and large-scale water heaters, this 3/4" NPT valve features a high-grade bronze body and a 5-inch thermostat extension. It is factory-set to trip at 150 PSI and 210°F, ensuring system integrity by discharging overheated water or excess pressure before system failure occurs. The thermo-bonded coated thermostat provides accurate thermal response and resists mineral buildup, while the tamper-resistant bonnet screws prevent unauthorized field adjustments. Built for reliability in demanding mechanical rooms, the Watts 40XL Series leverages a non-mechanical seat-to-disc alignment for consistent reseating after every discharge. This T&P valve is essential for maintaining ASME and CSA compliance in commercial hydronic and potable water heating applications where high-capacity safety relief is non-negotiable.
Key Benefits for the Contractor- Automatic Reseating: Eliminates the need for manual resets or valve replacement after a minor over-temperature or over-pressure event.
- Durable Bronze Construction: Provides superior corrosion resistance and longevity in aggressive water conditions.
- Advanced Thermostat Coating: The thermo-bonded thermostat is designed to reduce scale accumulation, maintaining precision in the 210°F thermal relief activation.
- Extended Probe Design: Specifically configured for installation within the hot water outlet to accurately sense the hottest water in the tank.
- ASME and CSA Certified: Verified performance ratings for high-capacity commercial water heater protection.
- How do I test the Watts 0121415 for proper operation? Use the integrated stainless steel test lever during routine inspections. Ensure the discharge pipe is clear and observe for a smooth flow and positive reseal upon releasing the lever.
- Is this valve suitable for potable water applications? Yes, the Watts 40XL-Z2 is used in both commercial potable water heaters and industrial storage tanks, though always verify local lead-free compliance for specific jurisdictional requirements.
- What is the purpose of the 5-inch extension? The extension ensures the thermal element is positioned correctly within the top 6 inches of the tank to monitor the most critical temperature zone, preventing "stacking" issues.
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.












