Quote:
Originally Posted by Slava
I'm hoping that someone can help me solve a mystery (to me anyway ). I have low flow toilets and one of them is really slow to fill the tank. It's basically a trickle. If I turn off the supply valve and turn it back on though it fills quickly/normally. Then as soon as it's flushed again its back to filling very slowly again. Seems so weird to me, and I would like to fix it. Anyone know what the issue is and basically what I would replace? (seems like something needs replacing)
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I had the exact same concern. On mine there is a black rubber seal under the top cap that becomes worn, causing a vacuum leak. Doesn't look like much, and no noticable tears or wear. Simple $5 repair fixes it right up. Mine was a fluidmaster 400 valve.