Brush pipe joint compound on the threads on the tpr valve using the brush supplied with the pipe joint compound.
Hot water heater discharge pipe.
An air gap eliminates the possibility of backflow from the drain into the discharge piping.
You may have an issues with the hot water coming out of overflow pipe.
Hold the tpr valve with the slip joint pliers.
This pipe is responsible for routing hot water released from the tpr to a proper discharge location.
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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.
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.
How to install a discharge pipe on a water heater step 1.
Turn the valve clockwise one additional turn to point the tpr.