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,
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Replacement Parts for Mercury III Toilet
Two-Piece Model - Tanks 4431/4471
Not sure which model toilet you have? Try looking under the toilet tank lid or inside of the toilet tank.
Related Items & Information
Universal Rundle Toilet Replacement Parts by Model
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*Please note: Different series toilets may share the same model number. Please double check the model number and date stamp in your toilet and cross reference that with available pictures and diagrams prior to ordering to ensure you're getting the correct parts for your toilet.
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?
Read our comprehensive Toilet Repair Information & FAQs to learn how your toilet works, how to find the right replacement parts, and how to fix common problems.
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