I don't know why but the screws on this one are almost impossible to remove. Why the hell did they pull them so tight? I had to use a vise to hold the screw, which thank goodness someone wrote about. The second was so tight I had to bang the valve on the floor while holding it in a vise. Absolutely insane. After the screws were removed, the product worked normally. I would suggest buying a different brand. It was just crazy trying to get those screws out. Thanks to the person who suggested the vise.
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