Question: The water inlet valve that supplies cold water to our washing machine drips slowly and water accumulates on the round handle. I see a hex nut at the base of the stem that connects the ...

Switch off your tankless water heater, then unplug it.; Shut the water inlet and outlet valves. Place a large bowl or basin below the service valves leading to the heater. Open the valves and ...

That’s the ball cock, or water inlet valve. ... The cracking noise is the result of expansion and contraction of the PVC pipe as it heats up and cools down--when hot water is run through it.