Gas water heater T&P relief valve (Watts 3/4 100xl-4 m7) discharge water constantly crazily when cold water inlet valve is open. Is it symptom of failed P&A valve? : r/askaplumber
0121339 - Watts 0121339 - 3/4" LF10L-2, T & P Relief Valve, Lead Free - 150 psi
Watts Water Technologies 100xl-4-m7 Rqaus1 100XL4M7 for sale online | eBay
Amazon.com: Watts Sea 66100 100XL-4 3/4" 150 Psi 100Xl-4 T & P Relief Valve : Industrial & Scientific