This will eliminate the negative pressure in.
Hot water heater drain valve.
Now is the time to activate your pump if you ve chosen to use one let the tank drain.
The process works best if you allow the water to cool for 12 to 24 hours although you can drain sooner if you wear protective clothing to avoid splashes.
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If you tried to unscrew the drain valve and the plastic broke in half the remaining stem will be difficult to remove.
Alternatively turn on a hot water faucet.
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You will need to shut off the power and gas if applicable supply before starting.
After opening all the hot water faucets around your house proceed to open the water heater drain valve.
Proper water heater repair and maintenance requires you to drain your water heater from time to time.
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Open the pressure relief valve on top of the water heater.
The drain valve holds back all the water in the tank so for obvious reasons you must drain the tank completely before removing the old valve.
In this episode of repair and replace.
The everbilt 3 4 in.
Rheem protech 2 1 4 in.
The best and safest way to change your drain valve is when the hot water tank has been emptied.