The purpose of a pressure / temperature relief valve on a water heater tank is to open up and release water if
the pressure exceeds 150 PSI or the water temperature exceeds 210 F degrees. Apparently the P/T valve at this water heater was leaky and the
homeowner fixed the leak by installing a shut off valve on the relief valve. This water heater tank is now a potential rocket ready to take off.
Click here to view video of exploding water heater tank
Photo by Chuk Mac Donald of
Status Inspection & Design®
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![[P/T valve with a shut off valve]](/inspection-photos/reliefvalveshutoffvalve.jpg "Photo of water heater P/T valve with a shut off valve")
![[P/T valve with a shut off valve]](/inspection-photos/reliefvalveshutoffvalve22.jpg "Photo of a water heater P/T valve with a shut off valve")