Watts 0121430 Valve
The Watts 0121430, also identified as the LFLLL40XL-150, is a high-capacity automatic reseating temperature and pressure relief valve designed specifically for commercial and large residential hot water supply tanks. Featuring a 3/4 inch NPT male inlet and female outlet, this lead free T&P valve is engineered for systems requiring a high ASME steam relief rating of up to 1,437,000 BTU/hr at 150 psi. The extended shank design, measuring 3-21/32 inches, is ideal for water heaters with thick insulation, ensuring the 5-inch thermo-bonded coated thermostat reaches the hottest water in the top 6 inches of the tank. This valve utilizes a copper silicon alloy body to meet lead-free requirements while providing reliable protection against thermal expansion and runaway firing conditions. Built to ANSI Z21.22 and CSA standards, the Watts LFLLL40XL incorporates tamper-resistant bonnet screws and a non-mechanical seat-to-disc alignment for long-term field reliability in demanding HVACR environments.
Key Benefits- Extended Shank Design: The 3-21/32 inch shank allows for direct installation on heaters with extra-thick insulation without needing additional nipples.
- High BTU Capacity: Rated for 1,437,000 BTU/hr, making it suitable for high-output commercial storage tanks.
- Lead Free Construction: Manufactured with lead-free copper silicon alloy to comply with state and federal potable water regulations.
- Automatic Reseating: Features a test lever and internal spring mechanism that automatically reseats after temperature or pressure stabilization.
- Proven Temperature Sensing: The 5-inch probe features a special thermo-bonded coating to prevent mineral buildup and ensure accurate 210Ā°F thermal response.
What is the difference between LFLL40XL and LFLLL40XL?
The "LLL" designation indicates an extra-long extended shank (3-21/32 inches) compared to the standard extended shank on the "LL" model, providing more clearance for heavily insulated tanks.
Can this valve be used for steam heating boilers?
No, this is a T&P relief valve designed for potable hot water supply tanks and heaters. For steam boiler applications, a dedicated steam safety valve must be selected.
Why is my T&P valve dripping occasionally?
Periodic dripping often indicates thermal expansion in a closed system or slight debris on the seat. If the valve discharges a high volume of water, it signifies an over-temperature or over-pressure condition that requires immediate inspection.
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: $561.21
-65%$561.21
$196.42Product Information
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Description
The Watts 0121430, also identified as the LFLLL40XL-150, is a high-capacity automatic reseating temperature and pressure relief valve designed specifically for commercial and large residential hot water supply tanks. Featuring a 3/4 inch NPT male inlet and female outlet, this lead free T&P valve is engineered for systems requiring a high ASME steam relief rating of up to 1,437,000 BTU/hr at 150 psi. The extended shank design, measuring 3-21/32 inches, is ideal for water heaters with thick insulation, ensuring the 5-inch thermo-bonded coated thermostat reaches the hottest water in the top 6 inches of the tank. This valve utilizes a copper silicon alloy body to meet lead-free requirements while providing reliable protection against thermal expansion and runaway firing conditions. Built to ANSI Z21.22 and CSA standards, the Watts LFLLL40XL incorporates tamper-resistant bonnet screws and a non-mechanical seat-to-disc alignment for long-term field reliability in demanding HVACR environments.
Key Benefits- Extended Shank Design: The 3-21/32 inch shank allows for direct installation on heaters with extra-thick insulation without needing additional nipples.
- High BTU Capacity: Rated for 1,437,000 BTU/hr, making it suitable for high-output commercial storage tanks.
- Lead Free Construction: Manufactured with lead-free copper silicon alloy to comply with state and federal potable water regulations.
- Automatic Reseating: Features a test lever and internal spring mechanism that automatically reseats after temperature or pressure stabilization.
- Proven Temperature Sensing: The 5-inch probe features a special thermo-bonded coating to prevent mineral buildup and ensure accurate 210Ā°F thermal response.
What is the difference between LFLL40XL and LFLLL40XL?
The "LLL" designation indicates an extra-long extended shank (3-21/32 inches) compared to the standard extended shank on the "LL" model, providing more clearance for heavily insulated tanks.
Can this valve be used for steam heating boilers?
No, this is a T&P relief valve designed for potable hot water supply tanks and heaters. For steam boiler applications, a dedicated steam safety valve must be selected.
Why is my T&P valve dripping occasionally?
Periodic dripping often indicates thermal expansion in a closed system or slight debris on the seat. If the valve discharges a high volume of water, it signifies an over-temperature or over-pressure condition that requires immediate inspection.
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.
