Lochinvar & A.O. Smith 100276752 Valve

The Lochinvar & A.O. Smith 100276752 is a professional-grade 3/4" T&P relief valve engineered for high-recovery residential and commercial water heating systems. Designed to function as a critical safety bypass, this valve features a 210F temperature relief threshold and a 150 PSI pressure rating, ensuring protection against catastrophic tank failure. The 3" extended element is specifically designed for units with thick insulation or specific tapping depths, allowing the thermostatic probe to reach the optimal sensing zone within the top six inches of the water column. Built to meet stringent ASME Section IV requirements, this water heater safety valve provides reliable mechanical discharge when internal conditions exceed safe operating limits. Whether you are performing a water heater repair or a new installation, this genuine OEM replacement part ensures thermal expansion is managed without compromising the integrity of the storage tank. This model is a direct replacement relief valve for various Lochinvar and A.O. Smith series, offering a precise fit for professional contractors.

Key Benefits:

• High-Temperature Protection: Calibrated to discharge at 210 degrees Fahrenheit to prevent localized boiling and steam pocket formation.
• Standardized Pressure Limit: Maintains a 150# pressure setpoint, compatible with most pressurized domestic hot water systems.
• Extended 3-Inch Probe: Features a 3" EXT sensing element for accurate temperature monitoring through deep tank bushings or heavy insulation.
• Corrosion-Resistant Construction: Fabricated with high-quality materials to prevent T&P valve leaking and mineral scale buildup in harsh water conditions.
• ANSI/ASME Certified: Fully compliant with industry safety standards for hot water heater relief valves.

Common Questions:

• Will this valve fit my specific water heater model? This 3/4" NPT valve is a standard size for most A.O. Smith and Lochinvar units, but the 3" extension length must be verified against your tank’s insulation thickness to ensure the probe reaches the water.
• Can I install this valve horizontally? While some T&P valves allow for horizontal discharge, code generally requires the sensing element to be submerged in the hottest water at the top of the tank; always follow the manufacturer's vertical orientation guidelines.
• Why is my relief valve dripping after installation? Dripping often indicates thermal expansion issues or high static line pressure exceeding 80 PSI rather than a valve defect. We recommend checking the expansion tank charge.

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.