Pipe wrench at Amazon Channel locks Resources: TP valve can draw water back into water heater if overflow tube is under water. If you buy same BTU heater, then gas line is correct size. Gas safety cans at Amazon Resources: If you are unsure which pipe is hot, then run hot tap for a minute and feel which pipe on top of water heater is hot.
Natural gas and propane gas both have less pressure on the line than water pipes, so gas pipes are easy to seal with ordinary wrench.
How to Connect an LP Propane Tank to a Hot Water Heater
Install and troubleshoot garbage disposal. Propane gas leak hugs floor and can fill basement with explosive gas. Place the assembly in the trench with the two pipes at either end pointed up. If you can install water line successfully, you can connect gas line. Flue pipe joints should have 3 sheet metal screws at each joint. TP overflow tube must drain downward, and cannot tip upward. Bad water heater draft can cause backdraft where toxic byproducts travel down vent pipe, entering home