Watts 0121430, LFLLL40XL150-3/4" T&P Valve 1437000 BTU

This Watts temperature and pressure relief valve is designed to release water at 150 psi and sense temperatures up to 210 degrees Fahrenheit. The unit features a 3/4 inch NPT connection and has a BTU rating of 143,700. It functions as a safety device by discharging water when either the pressure or temperature exceeds preset limits, preventing potential damage to the water heating system.