Quote:
Originally Posted by retiredguy123
Do you really think that opening the small drain valve will get rid of the sediment? The valve opening is very tiny compared to the overall size of the tank. Most of the sediment is caked onto the bottom and sides of the tank, so draining the tank using that small valve will not remove it.
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I've had good luck flushing tanks using the drain valve. Leave the water on while opening and closing the drain valve shut-off. The water pressure helps blow out and break up the deposits. And when testing the TPR valve, or opening it to help the water drain from the tank, give the TPR a couple of taps with wrench to help clear out the sediement which can accumulate on the rubber seal in the TPR.