"Without a TPR valve, a water heater would be like a giant bomb in your ... It's in a cylindrical brass housing about four ...

Q: I had to turn off the water supply valve at the top of my water heater. So I turned it ... (like yours), you end up turning the knob one way and then the other without accomplishing anything.

Water heaters come equipped with a temperature and pressure relief valve, also known as a TPRV. This valve allows water or steam to escape from the water heater ... The easiest way to do this ...

If not, the valve may have been compromised by scale, which is preventing it from closing all the way, and it probably needs ...