Water Heater Installation/Replacement of Gas or Electric where "cold" supply or "hot" distribution lines are 3/4" copper (i.e. not threaded) and Flexible Gas Connector is not needed or not allowed by codes. Gas or Electric Water Heater Installation/Replacement Kit contains: 2 each Copper Flexible Water Connectors, 3/4" FIP. 1 each Roll Teflon Tape. 2 each Compression Fittings, 3/4" Compression x 3/4" Male NPT.