I am trying to replace the the works in my toilet tank using the
Fluidmaster 404LG repair kit. Everything was going great. Then I
got to the point where you flush water through the uncapped fill
valve and check for leaks. All went fine, no leaks and water was
definitely flowing through the fill value and into the bowl. So, I
turned off the water and placed the valve cap assembly back on the
fill valve and locked it into position by turning it clockwise an
eighth of a turn. I turned the water back on, but it was stopped at
the fill valve--when the cap is on the fill valve it does not let any
water flow into the tank. So, something is wrong with how I put the
cap back on, or perhaps I jostled some part of the valve? I have
tried and re-tried several times and can not get water to come out of
the capped valve. Before I call a plumber, does anyone have any
There are some YouTube videos about Fluidmaster valves.
When you remove the cap and turn on the water valve, there should be a
strong stream of water out of the Fluidmaster body (keep hand over it
so it won't spray the ceiling). If not, the water line is clogged,
maybe by the rubber seal at the bottom of the toilet tank where it
goes into the Fluidmaster body. Also when you manually move the arm
with the cap removed, do you see the stainless steel pin move in and
out the tiny hole in the middle of the rubber plug?
It's going to be cheaper to buy a second Fluidmaster valve than to
call a plumber.
On Sun, 26 Sep 2010 13:54:12 -0700 (PDT), "larry moe 'n curly"
I was thinking the same thing. $10 will get the OP a new Fluidmaster
valve. Calling a plumber will probably cost well over $100.
Before replacing anything, take off the supply tube, place it into a
pail, and tuen on the supply valve. If the water pressure is low,
replace the supply line and the valve. Those thin lines are known to
clog, and those valves can have their washer come loose and partially
or fully plug the valve. Replacing all three parts will cost $20 or
Only if you're foolish enough to buy Fluidmaster.
I had one break while I was out of town and 10,000 gallons of water
flooded my house. I later talked to several plumbers and every one
said that Fluidmaster problems keep them in business.
They won't be in my house again. YMMV.
Only place I've ever seen them fail is in locations w/ high water
pressure -- that will eventually fatigue them and the will break at the
But, shouldn't have excessive water pressure, anyway... :)
And shouldn't buy plastic fill valves. Spend twice the amount and buy
a brass one that will last 5 times as long. Cheap plastic plumbing
parts are junk, and you'll be replacing them every few years, as well
as being a source of a flood. Every plumbing item in my house is
metal. Copper pipes, brass valves, fill valve, supply pipes, etc.
The only plastic is the PVC drain pipes, which are not under pressure
and work fine.
It all depends on your water. If you live in the North East or Mid
West where the water is pretty good all of that may be true but if you
live somewhere where the water sucks (like Florida), brass will
corrode up on you in no time. My wife bought a $100 shower head and it
lasted about a month before I was drilling out all the holes again.
Delta has replaced my "lifetime" bathroom faucets twice in 10 years.
Plastic is the stuff that lasts a long time.
Try releasing the float lock called the Leak Guard. This lock keeps
the float cup from falling will is what turns on the water. The Leak
Guard should be hooked to the tank lever so when you flush the toilet
it unlocks the float and allows the toilet to fill. For more help call
1-800-631-2011 and speak to a Tech.
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