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Old 08-07-2009, 09:53 PM   #1
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Slow toilet tank fill even with NEW fill valve?


This only happens in the master bath. I put a new Fluidmaster 400A fill valve. Water pressure is good. Water line is clear. What else? Can I adjust the fill rate of the 400A?
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Old 08-07-2009, 09:58 PM   #2
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Slow toilet tank fill even with NEW fill valve?


Don't know if you can do this with this model but on one I installed years ago you could turn the top of the valve assembly and let water come out prior to the rubber valve to clear the line of any gunk that might clog the valve. You likely can do something like this as if you were replacing the rubber valve piece, although you only want to do it to see if there is some junk there slowing the water flow.
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Old 08-08-2009, 12:11 AM   #3
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Slow toilet tank fill even with NEW fill valve?


I did this to no avail! Though stuck dirt/sand, etc. are symptomatic of fill valves that have been installed for a while, hence collecting the dirt, sand, etc.
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Old 08-08-2009, 07:55 AM   #4
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Slow toilet tank fill even with NEW fill valve?


Its possible you're blaming the wrong component, might be your shut-off valve is bad, or a valve down the supply line. You don't want water all over the floor of course, but you might want to check the water flow before it enters the toilet.
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Old 08-08-2009, 08:32 AM   #5
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Slow toilet tank fill even with NEW fill valve?


I changed the supply line to a braided steel. Before I connected it to the fill valve, I checked for water flow rate, aiming the supply line in a bucket of course, and it was fine. Also note that when I take the top off the fill valve, that is when following the procedure to clear it with sand/dirt, water seems to flow fine off the top. Like I said, this is a NEW fill valve, plus I have city water, so it couldn't have been dirty.
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Old 08-08-2009, 09:02 AM   #6
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Slow toilet tank fill even with NEW fill valve?


the only other thing I can think of with those valves, when the flow rate is down, there is the valve on top of the unit, there is a seal in there, maybe the one on yours is defective, they only run about $2-3, of course I wouldn't want to be replacing parts on a brand new purchase, if exchanging the unit for a new one is an option, I would do that. Also, did you have this problem before installing the new fill valve?
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Old 08-08-2009, 11:13 AM   #7
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Slow toilet tank fill even with NEW fill valve?


Slow tank fill was the reason for installing the new fill valve hoping that it would solve it, but it didn't. I also know about the seal, but again, it's new so I don't see that as being THE problem. The only thing I can think of now is a leak in the house pipe itself leading to the toilet valve. However, I don't hear any water when I turn off the valve.
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Old 08-08-2009, 03:48 PM   #8
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Slow toilet tank fill even with NEW fill valve?


Read all the instructions that came with the fill valve. they include trouble-shooting tips. With the Fluidmaster, you can occasionally clear it of dirt and grit to prevent future problems.
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Old 08-10-2009, 09:37 PM   #9
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Slow toilet tank fill even with NEW fill valve?


Quote:
Originally Posted by majakdragon View Post
Read all the instructions that came with the fill valve. they include trouble-shooting tips. With the Fluidmaster, you can occasionally clear it of dirt and grit to prevent future problems.
I did, and looked at the Fluidmaster site, even before I posted.
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