Thank you for asking. Please contact our parts department directly with both model and serial number for assistance 800-621-5622 (opt 3).
Thank you for asking, Samboe. When you've drained the unit, you should be able to unscrew the drain valve from the heater. If you have any further questions, please contact us at 1-866-279-4566. Thank you and have a great day.
It is a typical replacement valve. Opens counterclockwise. Make sure it is the right length for your application.