Planted Tank Guru
Join Date: Jul 2010
Location: Huntington Beach, CA, USA
Withoutknowing the history, I might want to do a little more checking if I could before going too far. That looks like a vlave which should just turn. Possible that it is just stuck and needs a little grunt to get it moving but then there might alos be another thought. Used reg? I might want to hook it to a tank and see it work before going too far with the other details. My thinking may be way off, so not to worry, just test some. Some regs get something really bad run into them so that it sticks the valve as well as the reg internals. You may back the bonnet off and find all is well, just the bonnet too tight!
You may know the history and know this is false but just a thought before you wrestle with one problem which could turn out to be the small item????