It's really one of those items that requires a bunch of lube. Make sure you lube it up good once you get the new one. I believe the entire mechanism is plastic, but you don't have the corrosion issue.Grant it it’s been about 20 degrees the passed week here, but that valve seems to be sealed stuck in the washdown position. The only way I could move this is with a set of plyers and probably break the handle in the process. Im going to order the replacement one and just change it out. More Plastic junk on a Grady FUN!