Mercury Series Replacement Toilet Parts

by Universal Rundle

Keep your Mercury toilet working just like new with repair and replacement parts from PlumbingSupply.com®! From trip levers and flush valves to float rods and ballcocks, you'll find it right here. If you want more Universal Rundle parts, visit our page.


Replacement Parts for Mercury III Toilet
Two-Piece Model - Tanks 4431/4471

Mercury toilet repair parts

Model & Service Years Description Original
Part #
Price & Quantity
Mercury III Toilet
Models: 4431 / 4471
Feb. 1982 - June 1987
Ballcock - Replaced by #400A
- Clilck and go to 400A repair parts
134
134C
$16.62
Flush Valve - (original 6-13/16")
Replaced by "Will-Fit"
Please note: The "Will-Fit" flush valves offered above will need to be cut down to original valve height (using any type of saw - wood saw, hack saw, etc.) - altered valves are non-returnable.
240
234
$14.99
Float Rod (9") 122
126
Discontinued
Float Ball - (for original 134 and 134C ballcock) 102 $3.70
Trip Lever - White 340 Discontinued
Trip Lever - Chrome "will-fit"
340
$4.77
Tank To Bowl Gasket - Recessed - #WA75 "Will-Fit" -- $4.39
Tank To Bowl Bolt Set - Stainless Steel -- $6.39
Mercury III Toilet
Models: 4431 / 4471
June 1987 - Oct. 1993
Ballcock - Replaced by #400A
- Click and go to 400A repair parts
144
145
$16.62
Flush Valve - (original 6-13/16")
Replaced by "Will-Fit"
Please note: The "Will-Fit" flush valves offered above will need to be cut down to original valve height (using any type of saw - wood saw, hack saw, etc.) - altered valves are non-returnable.
252
253
$14.99
Float Rod (9") 120
121
Discontinued
Float Ball - (for original 144 and 145 ballcock) 102 $3.70
Trip Lever - White 340 Discontinued
Trip Lever - Chrome "will-fit"
340
$4.77
Tank To Bowl Gasket - Recessed - #WA75 "Will-Fit" -- $4.39
Tank To Bowl Bolt Set - Stainless Steel -- $6.39

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Not sure which model toilet you have? Try looking under the toilet tank lid or inside of the toilet tank.


Related Items & Information




Frequently Asked Questions

Q. "I installed a new fill valve and my new valve comes on (and then goes off) for a few seconds about once per hour?"
A. This could be caused by many things. The most common is with a Fluidmaster 400. This is a great valve but be sure to install the 1/4" tube per their instructions. Use the clip that comes with it and do not just stick it into the overflow tube or it will go on and off every so often by itself. If that isn't it, take some food coloring and place it in your tank. Wait a few hours and if some of the color has gone into the bowl then you probably need a new flapper.

Q. "My Universal Rundle toilet tank has a tilt valve. How does the Fluidmaster 400A fill valve allow the bowl to refill?"
A. If you are using a Fluidmaster 400A then you must also use the Fluidmaster #599 refill tube & clip. The clip attaches to the back of the tank and keeps the 1/4" refill tube pointed towards and into the overflow tube of the tilt valve. The 1/4" refill tube must not be attached directly into the overflow tube. There must be an air break between the refill tube and the overflow tube to keep the 400A from siphoning the water in the tank and putting it into the bowl continuously causing the 400A to turn on and off continuously.

Have questions about toilet parts or toilet repair?

Toilet Repair Information & FAQs


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