Temperature & Pressure Relief Valve - 1/2" Valve with 4" ProbeProtect your RV water heater from excessive temperatures and water pressure with corrosion-resistant metal T&P valves. All valves are factory set at 150 PSI and are crafted with no gaskets and epoxy-coated probes to prevent corrosion buildup.WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.