05-09-2018, 03:14 PM
Yes.. Believe it's gray plastic....I drain my tank every year using that valve as part of the winterization process.. Rotating the 2 other valve handles 90 degrees isolates the water heater from the rest of the system.... The reason they provide that capability is to ensure any NON-TOX used to winterize the water system doesn't get into the water heater as it will leave a funny taste and smell when water is used through the water heater the following year...The taste/smell is hard to get rid of as well
