How to replace the Douglas valve or flush valve on
your Toilet bowl.
Full step by step instructions on
how to replace a toilet fill valve also known as a toilet Douglass valve. It
sometimes becomes necessary to replace a toilet flush valve, some reasons are
the tube has cracked and water keeps leaking into the toilet bowl. other reasons
are problems getting the right flapper for the bowl or other parts break off the
old flush valve. In the example below, a Mansfield flush valve was in the
Mansfield toilet, I personally like the way the Mansfield flush valve works, and
the washer is easy to replace, but this home owner wanted it replaced so he
could just use a standard flapper in the toilet tank. The replacement
instructions will work on many toilets but not all, some will have 2 bolts and
others will have 3 bolts that tie the tank to the bowl, this does not matter.
Some old Eljer toilets, have the flush valve system built into the porcelain of
the bowl, this cannot be changed. but a special flapper is made specifically for
this type of old Eljer toilets. Please click on any image, to see a larger
|| If you are lucky the nut will turn, and the whole bolt will not
turn. Oh YA! you may want to use rubber gloves. (remember all those
times you missed) That's why the bolts may not turn. So don't Get
Pissed off. (pardon the pun) if the nut will not come off the bolt,
just get a 1/4" or a 3/8" drill bit and drill right through the
center of the top of the bolt that is in the tank. The bolt will
just drop out.
||This is a close-up view of the bottom of the toilet tank you can
see the flapper from below and the 2 bolts. some toilet tanks have a
nut on the bolts at the bottom of the tank and others don't if your
toilet tank has nuts be sure to use nuts on the replacement bolts,
but if not don't put nuts on the bolts, this could cause the tank
not to seal to the bowl or can crack the tank and bowl.
||In the picture above, the long silver rod is a long 1/4" metal
cutting drill bit, note how it is in the center of the top of the
||This is the cordless drill i used to drill the heat off the
||To the left is the bolt with out the head, to the right is the
head of the bolt detached from the bolt.
||This tank has the nuts on the bottom of the toilet tank, so I am
removing them, sometimes this nut will not move and you will need to
cut it off or again drill the head off the top of the bolt.
||The old washer from the old tank to bowl kit is dry rotted to
the bottom of the toilet tank and needs to be cut off.
||This is what the bottom of the toilet tank looks like with the
bolts and rubber washer removed, this is an old toilet so the flush
valve is made of brass not plastic.
||The nut is just pot metal and is so old it just splits in half
and comes off easy, you may have a brass nut and may need to use a
wrench to get it off, but it may not turn and you may need to cut it
Please continue to the next page by
||We are going to replace the flush valve or Douglass valve on this toilet.
The seat on it has a worn area and a flapper will no longer make a 100 percent seal.
||This is what the inside looks like now. I am going to replace
everything in this tank.
||As Always first things first, Turn off the water and disconnect
the water supply.
||In most cases you do not have to remove the toilet from the
floor, But you will have to remove the tank from the bowl. Some have
2 bolts and others have 3, with one in the back, that may be hard to
remove with the toilet against the wall. You should buy a new tank
to bowl kit before you start. Bolts and nuts are different sizes, so
find o wrench that fits the nuts under the tank,