An air gap eliminates the possibility of backflow from the drain into the discharge piping.
Hot water heater discharge pipe.
Brush pipe joint compound on the threads on the tpr valve using the brush supplied with the pipe joint compound.
You may have an issues with the hot water coming out of overflow pipe.
This temperature pressure relief valve is not directly attach with the hot water pressure heater.
Select 2 to 4 items to compare.
1 the discharge pipe cannot be directly connected to the home s plumbing drainage system but an air gap located in the same room as the water heater can used to connect to the drainage system.
Turn the valve clockwise one additional turn to point the tpr.
Hold the tpr valve with the slip joint pliers.
In most of the disasters caused by hot water heater pipe leaking from the top the trp valve is involved.
The valve should be connected to a discharge pipe also called a drain line that runs down the length of the water heater tank.
Instead it is attached with a discharge pipe link with hot water heater.