Why is my water heater still leaking at the relief valve on top? I've changed it twice. Also I have 160lbs of pressure and have changed the regulators three times. Doesn't make sense. Please help!
Water – Why is the water heater leaking from the relief valve on the top
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Related Solutions
You may need an aerator. If it needs replacing, then the water may spatter a lot. The aerator is the piece that screws into the end of the spigot. It limits the flow of water to between 1.5 and 2.5 gallons per minute and entrains air into the water stream to prevent splashing. From what you describe, it may even be missing. You can pick one up at any hardware store.
This is just a guess, but you're probably only seeing existing hot water in your house's pipes flow back to the water heater, since there's none of the resistance that the full tank of water can provide.
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Best Answer
I think the pressure on your house plumbing should be about 80 psi or less right after you run a tap and then shut it off. Do you have an expansion tank to prevent pressure increase? If you use a lot of hot water, then don't use any water, the pressure in your system can increase as the cold water in the tank water heater expands on being heated.
If this is what is happening, if your TP valve is dripping, then it should stop if you momentarily open a cold water tap (or if you open a hot water tap but then more cold water would flow into the tank causing more expansion after a while).
See pressure relief tank.
EDIT Informative readings here from Watts.