My water heater (LP GAS) drain valve configuration has been modified. The valve was removed and extended out a few inches with a copper pipe. In addition, a T was inserted in line with the extended drain valve. The third port of this T appears to feed hot water to other locations in the house. So, I appear to have two hot water connections to the water heater. I have never seen this done. Can anyone explain why someone would have expended the extra effort to do this? What benefits are there to this configuration? I am quite sure that sediment is finding its way to the faucets that this connection feeds.