Jacuzzi toilet fills super fast, but replaced flush valve, now slow! y 415

[Jackie1]

I have a Jacuzzi toilet from 2005 that is awesome and fills super fast! Model Y 415. It has the old style float ball on it. The main issue is, after it fills, it still runs a little and no matter how I adjust it, it will work for a while, then go back to slightly running, so I think the valve is worn as it's older.

Now, I replaced flush valve, with the newer style without the ball from Home depot, a well known brand replacement and it take 3 times longer to fill. All these new ones are labeled quiet flow, etc, etc which I don't care about. I liked how fast the old one filled so I put it back on and I'm dealing with the slight running.

Why is this? I'll admit, with the factory one it's kinda loud when filling, but it fills SUPER FAST and I want it to stay fast with a new valve. Any ideas?

Yes, I also have the kohler-touchless-flushing-retrofit kit, which they say won't work with ball stylw which is false, It does work and the ball doesn't hit it when it refills

 

[Jadnashua]

After a flush, there are actually two areas that need to get refilled: the tank, and the bowl. What's likely happening is that the valve you have is either not adjusted properly, or it isn't one that can be adjusted, and it is wasting water down the bowl. The hose to the overflow tube fills the bowl. An OEM valve will have that system balanced so that when it detects the tank is full, the bowl will be too. If the balance isn't correct, more water could be going to the bowl, and then just running down the drain, while the tank is trying to catch up.

Another possibility (and there are probably others) is that the shutoff after being turned off then back on, is not actually fully opened or when you turned the water back on, some crud got loose and is partially blocking the line or the valve.