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Question:

My eletric hot water tank started spraying water out the pressure valve?

I have put a new pressure valve and replaced both thermostat

Answer:

If you have replaced the TP valve, more than likely there is a heating element shorted to the tank. This will cause continuous heating and high temp/high pressure...good luck.
If it is not overheating due to a stuck thermostat or bad heating element and you changed the TP valve then it is possible you have a problem with thermal expansion. When water is heated it expands and the more it is heated the more volume it will need to expand. Since the water heater and the piping are not designed to expand the water only has one place to go (well two if count the faucet) and that is out the TP valve. This problem is not uncommon and the solution is to have an expansion tank installed on the hot water heater in the piping near the tank.
so that should have fixed it I wonder if you needed to replace the stats

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